Page 1 2902 MainStreet Network Termination Unit | Release 1.0 H T E C H N I C A L P R A C T I C E S...
Page 2 Alcatel, shall be at the customer's sole risk. The customer hereby agrees to defend and hold Alcatel harmless from any claims for loss, cost, damage, expense or liability that may arise out of or in connection with the use, sale, licence or other distribution of the products in such applications.
Page 3 Preface This document describes the technical practices for the 2902 MainStreet Network Termination Unit, Release 1, software generic 82211. It includes the following volumes. • Installation describes how to install and ground a 2902 MainStreet system, connect it to data equipment, primary rate links and node management equipment, and how to power it up.
Page 4 Preface Special information The following conventions are used to draw your attention to special information. Danger means that the described activity or situation may Danger — cause personal injury. Warning means that the described activity or situation Warning — may or will cause equipment damage. Caution means that the described activity or situation Caution —...
Page 5: Mandatory Regulations
Mandatory regulations The sections that follow outline the mandatory regulations governing the installation and operation of the 2902 MainStreet Network Termination Unit. Adherence to these instructions is necessary to ensure regulatory compliance. 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 6 Mandatory regulations General requirements Product safety This equipment must be configured only with those assemblies specified in the technical practices and must be mounted in the locations specified. There is a danger of explosion if the battery used in this Danger —...
Page 7 EMC compliance requires the use of: • ferrite beads on all interface cables • screened interface cables for Class B compliance All Alcatel cables are shipped with the necessary special accessories required for regulatory compliance. 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 8 Mandatory regulations Install the appropriate ferrite beads as indicated in Table 1, and use shielded cables for Class B installations. Ferrite beads must be attached at both ends of the cable, as close as possible to the connector headshell, and secured with tie wraps. In addition, the appropriate size must be selected to fit the cable diameter (see Figure 1).
Page 9 Mandatory regulations European regulations The unit has been CE-marked in accordance with the requirements of European Directive 1999/5/EC, the Radio and Telecommunications Terminal Equipment Directive. This product complies with the requirements of European Directive 73/23/ECC, 89/336/ECC and 91/263/ECC. See the “Product safety” and “Electromagnetic compatibility” sections in “General requirements”...
Page 10 Mandatory regulations Australian regulations Power supply cord wiring The cores in this mains lead are colored in accordance with the following code: • green and yellow: earth • blue: neutral • brown: live As the colors of the cores in the mains lead of this equipment may not correspond with the colored markings identifying the terminals in the plug, proceed as follows if power supply cord rewiring is required.
Page 11: Table Of Contents
Contents Preface Mandatory regulations 1 — Introduction Product overview ....................1-2 Physical components ..................1-3 HDSL LIM overview ..................1-6 Optical LIM overview ..................1-8 Site selection ....................1-9 Installation summary ..................1-11 Installation tools and hardware required ............1-11 2 —...
Page 12 Contents 4 — Ground and power connections Ground connections ..................4-2 Power connections ................... 4-4 Securing slide assembly cable connections ............. 4-4 Startup diagnostics ................... 4-6 5 — Installing and removing modules Control card modules ..................5-2 Opening the unit ....................5-2 Installing and removing primary rate modules ..........
Page 13 Contents 12 — Module position and circuit configuration 12-1 12.1 Module position and circuit identifiers ............. 12-2 12.2 Module position configuration ................. 12-3 12.3 Module position displays ................. 12-4 12.4 Naming a module position ................12-8 12.5 Naming a circuit ....................12-8 12.6 Quick circuit configurations ................
Page 14 Contents 17.9 Clocking (synchronous only) ................17-9 17.10 Multidrop data bridge ..................17-12 17.11 Super-rate configuration for DNIC or 2B1Q modules ........17-13 17.12 Loss-of-synchronization debounce time (DNIC only) ........17-14 18 — RS-232 DCM 18-1 18.1 Understanding the RS-232 DCM ..............18-2 18.2 RS-232 DCM circuit operating parameters ............
Page 15 Contents 22.3 Transport bandwidth ..................22-3 22.4 Transport position ................... 22-5 22.5 Signaling and the signaling bit stream ............22-5 22.6 Interface speed ....................22-6 22.7 Data position ....................22-8 23 — Cross-connecting circuits 23-1 23.1 Types of cross-connections ................23-2 23.2 Simple connections ..................
Page 16 Contents 28 — Statistics 28-1 28.1 Synchronization statistics ................28-2 28.2 FAS and CRC4 statistics ................28-3 28.3 Codirectional DCM quality statistics ............... 28-7 29 — CPSS maintenance 29-1 29.1 Routing information ..................29-2 29.2 CPSS grooming ....................29-5 30 — Database management 30-1 30.1...
Page 17: Introduction
1 — Introduction 1.1 Product overview 1.2 Physical components 1.3 HDSL LIM overview 1.4 Optical LIM overview 1.5 Site selection 1.6 Installation summary 1-11 1.7 Installation tools and hardware required 1-11 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 18: Product Overview
1 — Introduction Product overview The 2902 MainStreet Network Termination Unit is a high-speed NTU for data devices. The 2902 MainStreet unit also provides CEPT voice bypass capability. It supports two E1 primary rate interfaces and two data interface modules. HDSL technology allows connection to E1 lines using twisted copper pairs, without repeaters.
Page 19: Physical Components
1 — Introduction Data devices connect to a 2902 MainStreet unit through the following data interface modules: • RS-232 DCM • V.35 DCM • X.21 DCM • Codirectional DCM • DNIC module • 2B1Q module Physical components The 2902 MainStreet system has three major physical components: •...
Page 20 1 — Introduction Chassis The chassis acts as a mechanical base for the Control card, power supply and connectors. The top is attached with screws and, once removed, provides access to the Control card, its modules and the power supply. The front panel has LEDs that indicate the status of the power supply, the alarms, the processor and the primary rate links.
Page 21 1 — Introduction E1 primary rate line interface modules A LIM provides the line interface to a primary rate line. It contains the drivers and receivers, coupling transformers, and fuses needed for line buffering, impedance matching, isolation and protection. It also provides transmit and receive shield grounding.
Page 22: Hdsl Lim Overview
1 — Introduction The personality module in Slot 1 connects to the data interface module in physical position 1 (NMTI logical position M01). The personality module in Slot 2 connects to physical position 2 (NMTI logical position M09). Primary rate link connectors (Rx-1, Tx-1, Rx-2, Tx-2, Line-1, Line-2, P1 and P2) The BNC connectors labeled Rx-1, Tx-1, Rx-2 and Tx-2 are for 75 Ω...
Page 23 1 — Introduction The 2902 MainStreet system supports two E1 HDSL LIMs, each providing separate HDSL transmission. A module is used at both ends of an E1 HDSL link to increase the distance between midspan repeaters in a carrier service area. Each loop carries 16 DS0s as well as overhead information.
Page 24: Optical Lim Overview
1 — Introduction Performance specifications The E1 HDSL LIM and E1 HDSL LIM2 meet the performance specification for ETSI ETR 152. Optical LIM overview The E1 Optical LIM converts electrical signals to optical signals. The E1 Optical LIM supports up to 32 DS0s, with one DS0 (timeslot 0) used for synchronization. The 31 DS0s available for data transmission provide a bidirectional bandwidth of 2.048 Mb/s over a distance of 15 km (9 mi), using a 1300 nm single-mode fiber.
Page 25: Site Selection
1 — Introduction Figure 1-7 E1 Optical LIM feeder node application 2902 MainStreet NTU DNIC Data X.21 15 km (9 mi) Optical network Fiber cable Optical G.703 (P2) (P1) Video 10451 Site selection Observe the site, space, power and grounding requirements that follow to ensure: •...
Page 26 1 — Introduction Table 1-1 Site specifications Item Specification Power source Unswitched, separate circuit providing one of the following ranges: • 90 to 110 V ac (100 V ac +6%/–10%) • 207 to 253 V ac (230 V ac ±10%) Operating: 0 °...
Page 27: Installation Summary
1 — Introduction Table 1-2 Maximum power requirements Supplied voltage Minimum voltage Maximum Maximum power voltage requirement 100 V ac 90 V ac 110 V ac 42 W 230 V ac 207 V ac 253 V ac 42 W Note Occurs when two data interface modules and two LIMs are used.
Page 28: Connecting Node Management Equipment
1 — Introduction Table 1-4 Installation tools and hardware Activity Tools and hardware • Assembling Antistatic wrist strap • Small slot screwdriver • #1 and #2 Phillips screwdrivers • Rack-mounting #2 Phillips screwdriver • One rack-mount kit (19-inch) available from your supplier (part number 90-2901-01) •...
Page 29: Unpacking And Inspecting The Shipment
2 — Unpacking and inspecting the shipment 2.1 Antistatic precautions 2.2 Unpacking and inspecting the shipment 2.3 Performing a startup test 2.4 Repacking the shipment 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 30: Antistatic Precautions
2 — Unpacking and inspecting the shipment Antistatic precautions Electronic circuitry is easily damaged by electrostatic discharge. Protect the unit and its components by wearing a properly grounded antistatic wrist strap throughout the assembly and installation procedure. Until the unit is permanently grounded, connect your antistatic wrist strap to a building ground point, usually a metal water pipe or building steel.
Page 31 2 — Unpacking and inspecting the shipment Figure 2-2 Part number label on an interface module 3 4 - 5 6 9 0 - 1 2 10469 Procedure 2-1 To unpack the shipment and its components Warning — Observe the antistatic precautions described in section 2.1. Check each package for any sign of damage.
Page 32: Performing A Startup Test
2 — Unpacking and inspecting the shipment Verify that the marketing part number on the module matches the marketing part number on the label. Affix the label to the appropriate position on the system configuration record (see Figure 2-3). If you are removing or replacing a module, remove its label from the system configuration record and keep it with the module.
Page 33: Mounting The Unit
3 — Mounting the unit 3.1 Setting up the unit on a desk 3.2 Mounting the unit in a rack 3.3 Mounting the unit in a slide assembly 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 34: Setting Up The Unit On A Desk
3 — Mounting the unit Setting up the unit on a desk The unit is designed to be set on a flat surface, such as a desktop or a table. If the rubber feet are not attached, place the unit upside down on a flat surface and attach them.
Page 35: Mounting The Unit In A Slide Assembly
3 — Mounting the unit Figure 3-2 Attaching the unit to the rack 2902 MainStreet Power Processor Event Status Out of Sync 1 Network Termination Unit System Status Out of Sync 2 Mounting Mounting screws screws 8835 Mounting the unit in a slide assembly The unit can be rack-mounted in a 19- or 23-inch slide assembly.
Page 36 3 — Mounting the unit Procedure 3-2 To install the slide assembly in a rack Tools required: • #2 Phillips screwdriver • one rack-mount slide assembly kit (19- or 23-inch), available from your supplier (part numbers 90-2367-01 and 90-2367-02 respectively) Secure the slide assembly to the rack with the panhead screws (supplied).
Page 37 3 — Mounting the unit Figure 3-6 Removing the slide bracket from the rack-mount shelf Slide rails Slide 8638 Procedure 3-3 To attach the unit to the slide bracket You need a #2 Phillips screwdriver to perform this task. Place the unit upside down on a flat surface and position the slide bracket upside down on top of the unit.
Page 38 3 — Mounting the unit Figure 3-7 Securing the slide bracket to the unit 8970 Procedure 3-4 To install the slide bracket in the rack Fully extend the slide rails from the rack-mount shelf. Align the slides on the slide bracket with the slide rails and push the bracket into the rails until the slides lock into place (see Figure 3-8).
Page 39 3 — Mounting the unit Figure 3-8 Installing the unit in the rack 2 9 0 N e tw a i n S o rk T e rm t r e e in a ti U n it Slide rail P o w E v e n t S...
Page 40 3 — Mounting the unit 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 41 4 — Ground and power connections 4.1 Ground connections 4.2 Power connections 4.3 Securing slide assembly cable connections 4.4 Startup diagnostics 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 42: Ground And Power Connections
4 — Ground and power connections Ground connections The three types of ground points are: protective earth, telecom safety earth (labeled Sig/Gnd) and energy dumping ground (labeled EDG). Figure 4-1 identifies the ground points on the unit. To avoid electrical damage to the 2902 MainStreet system, all three ground types must be permanently and separately grounded.
Page 43 4 — Ground and power connections Connect three cables to the building ground point and bring the cables to the back of the unit. Note — If the unit is rack-mounted in a slide assembly, leave enough extra cable to form a service loop approximately 40 to 46 cm (16 to 18 in.).
Page 44: Power Connections
4 — Ground and power connections Power connections If the unit is rack-mounted in a slide assembly, leave enough cable to form a service loop approximately 40 to 46 cm (16 to 18 in.). See section 4.3 for details on creating service loops.
Page 45 4 — Ground and power connections Secure the cables to the shelf with the cable ties. Leave a service loop of 40 to 46 cm (16 to 18 in.) maximum, from the point of connection on the unit to the first cable tie fastening.
Page 46: Startup Diagnostics
4 — Ground and power connections Startup diagnostics At power-up, the unit goes through a startup sequence that includes a number of startup diagnostic tests (or self-tests). The startup sequence should last for less than 1 minute. Figures 4-5 and 4-6 show the location of the LEDs. When the 2902 MainStreet unit is powered up without any LIMs or data interface modules installed, the LEDs light up as described in Tables 4-1 and 4-2.
Page 47 4 — Ground and power connections Table 4-1 Front panel indicators at power-up Indicator Description Power LED Turns on and stays on. Event Status LED Turn on for 1 second and then turn off. After approximately 40 seconds, these LEDs turn on again. System Status LED Processor LED Turns on for 1 second and then turns off.
Page 48 4 — Ground and power connections Table 4-3 Diagnostic self-test descriptions Number Test Description Problem EPROM A checksum is performed over the entire EPROM checksum checksum program space. error Data bus This test causes a bus interrupt and then Processor viability verifies that the interrupt is a bus interrupt.
Page 49 4 — Ground and power connections Number Test Description Problem HDLC loopback This test checks the function of the third Control card HDLC (HDLC 3) HDLC chip on the Control card by making test failure a loopback through the DX and then sending a packet through.
Page 50 4 — Ground and power connections 4-10 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 51: Installing And Removing Modules
5 — Installing and removing modules 5.1 Control card modules 5.2 Opening the unit 5.3 Installing and removing primary rate modules 5.4 Installing and removing data interface modules 5-10 5.5 Installing and removing personality modules 5-11 5.6 Replacing EPROMs 5-12 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 52: Control Card Modules
5 — Installing and removing modules Control card modules Figure 5-1 shows the location of the primary rate, data interface, EPROM and personality modules on the Control card. Figure 5-1 Location of modules on the Control card LIM (P1) LIM (P2) EPROMs Interface module...
Page 53: Installing And Removing Primary Rate Modules
5 — Installing and removing modules Figure 5-2 Opening the unit Sl ot 2 Sl ot 1 R x- 1 Tx -1 R x- 2 Tx -2 ED G Si g/ G nd Li ne -1 Li ne -2 M od em Te rm in Al ar m Lo op...
Page 54 5 — Installing and removing modules Figure 5-3 Jumper block locations LIM (P1) LIM (P2) J39 J40 Jumper blocks Jumper blocks for LIM P1 for LIM P2 16567 Install the jumpers. The jumpers are factory-set to 75 Ω termination. For E1 G.703 LIMs, the jumpers are configured for 75 Ω or 120 Ω termination depending on the variant (75 Ω...
Page 55 5 — Installing and removing modules Figure 5-4 Jumper configuration operation operation 16566 Hold the module by its edges, align its connector and mounting holes with the Control card connector and mounting posts, and gently push down on the edge of the module nearest the female connector (see Figure 5-5).
Page 56 5 — Installing and removing modules Reinsert the screws into the posts. Remove the module’s label from the configuration record. Procedure 5-4 To install an E1 Optical LIM Danger — The E1 Optical LIM is a CLASS 1 LASER PRODUCT. Only trained, qualified service personnel thoroughly familiar with laser radiation hazards should install or remove the fiber-optic cables and cards in this system.
Page 57 5 — Installing and removing modules Figure 5-6 Connecting the fiber cable to the E1 Optical LIM Fiber cable 9776 Hold the module by its edges, align its connector and mounting holes with the Control card connector and the two closest mounting posts, and gently push down on the edge of the module nearest the female connector (see Figure 5-7).
Page 58 5 — Installing and removing modules Carefully wrap each fiber cable in three loops (counter-clockwise direction) (see Figure 5-8). Figure 5-8 Looping and connecting the fiber cable to the optical fiber connector Fiber cables E1 Optical LIMs P1 and P2 optical fiber connectors 10472 Loosely secure the fiber cables with the four cable ties (see Figure 5-9).
Page 59 5 — Installing and removing modules Figure 5-10 Securing the cable clamp EPROM #1 Cable clamp 10474 Open the cable clamp and place it around the looped fiber cables. Secure the cable clamp to the Control card mounting post with the #4-40 screw (1/2 in.).
Page 60: Installing And Removing Data Interface Modules
5 — Installing and removing modules Installing and removing data interface modules Figure 5-1 identifies the location of the data interface module positions. Each position has two male connectors. Any data module can be installed in either position. Electronic circuitry is easily damaged by electrostatic Warning —...
Page 61: Installing And Removing Personality Modules
5 — Installing and removing modules Procedure 5-7 To remove a data interface module Grasp the two plastic tabs on the module and gently lift the module off the Control card. Remove the module’s label from the configuration record. Installing and removing personality modules The 2902 MainStreet system is shipped with covering plates protecting the connectors for Slot 1 and Slot 2.
Page 62: Replacing Eproms
5 — Installing and removing modules Secure the module with the screws removed in step 1. Procedure 5-9 To remove a personality module Remove the screws that secure the personality module. Grasp the module by the edges of its faceplate and gently pull it out of its mounting position.
Page 63 5 — Installing and removing modules Procedure 5-10 To replace the EPROMs Tools required: • #1 Phillips screwdriver • IC extraction tool (for EPROM) • IC insertion tool (for EPROM) Warning 1 — Ensure that the power is off before inserting or removing EPROMs.
Page 64 5 — Installing and removing modules Figure 5-14 EPROM insertion Dimple Arrow 10449 Repeat steps 3 and 4 for EPROM #2 (part number 80-2742-02-YY). Place the old EPROMs in the packaging supplied with the new EPROM set. Store the old EPROMs in a safe place. 5-14 2902 MainStreet Technical Practices 90-2906-01...
Page 65: Connecting To The Network
6 — Connecting to the network 6.1 Primary rate connections 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 66: Primary Rate Connections
6 — Connecting to the network Primary rate connections Primary rate connections are made through connectors on the rear panel: RJ45 connectors for twisted pair (connectors Line-1 and Line-2), optical connectors for fiber cables (connectors P1 and P2) and BNC connectors for coaxial cables (connectors Rx-1, Tx-1, Rx-2 and Tx-2).
Page 67 6 — Connecting to the network Figure 6-3 RJ45 network connectors (line-1 and line-2) for the E1 HDSL LIMs Pair 1b Pair 1a Pair 2b Pair 2a nc = no connection 10470 Figure 6-4 BNC network connectors (Rx-1, Tx-1, Rx-2 and Tx-2) Transmit (+) Receive (+) Transmit (-)
Page 68 6 — Connecting to the network 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 69: Connecting To Data Devices
7 — Connecting to data devices 7.1 Data circuit connections 7.2 Assembling an adapter for EIA/TIA-232 connections 7.3 DB25-to-M34 cable pin and signal assignment 7-20 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 70: Data Circuit Connections
7 — Connecting to data devices Data circuit connections Data interface modules have one or two circuits that connect to data devices. Each module connects to its data devices through a plug-in adapter module, called a personality module. Personality modules are user-changeable, and are installed in Slot 1 and Slot 2 connectors, located on the rear panel of the unit (Slot 2 is stacked above Slot 1).
Page 71 7 — Connecting to data devices Personality module pin and signal assignments Table 7-2 lists the data interface modules and identifies the items needed to connect to the data device, including pin and signal assignment, cable and additional adapter (if required). Some connections to EIA/TIA-232 and V.35 devices require customized cables or adapters.
Page 72 7 — Connecting to data devices The signal names in Table 7-3 are the names at the 2902 MainStreet system connector. If an adapter is used, the pin and signal assignments at the adapter may be different. See section 7.2 for various EIA/TIA-232 adapter configurations. Table 7-3 RS-232 personality module pin and signal assignment Pin number Signal name...
Page 73 7 — Connecting to data devices Pin number Signal name (if 2902 MainStreet circuit is DCE) SCR(B) TXD(B) SCT(A) RXD(B) SCR(A) TXD(A) FGND SGND (2 of 2) Figure 7-4 V.35 (Type 2) personality module pin and signal assignment (external DCE and all DTE modes) V.35 (type 2) 8867 2902 MainStreet Technical Practices...
Page 74 7 — Connecting to data devices This interface adapter is used for external DCE and all DTE modes; internal and slave DCE modes require the V.35 interface adapter (part number 90-1308-05). The default mode is DCE. The signal names in Table 7-5 are the names at the 2902 MainStreet system connector.
Page 75 7 — Connecting to data devices Figure 7-5 X.21 personality module pin and signal assignment X.21 8868 The signal names in Table 7-6 are the names at the 2902 MainStreet system connector. The default mode is DCE. If a 1:1 DB15-to-DB15 cable is used, the signal names will be the same at the cable end.
Page 76 7 — Connecting to data devices Figure 7-6 DNIC and 2B1Q personality module pin and signal assignment DNIC 8869 Only connector 1 can be used for connecting a DTU to the Note — DNIC or 2B1Q module. In the United Kingdom, leased line connections must be made using typical Krone block or similar connections.
Page 77: Assembling An Adapter For Eia/Tia-232 Connections
7 — Connecting to data devices Table 7-8 Codirectional G.703 personality module pin and signal assignment Pin number Signal Receive Receive Transmit Transmit Procedure 7-1 To connect to data devices Assemble the appropriate cable and adapter for your data device, as described in this section.
Page 78 7 — Connecting to data devices RJ45-to-DB25 adapter pin and signal assignment Figures 7-9 to 7-16 illustrate eight RJ45-to-DB25 adapter configurations. The figures show the inside of a female adapter connector. Select the figure that matches the adapter application (for example, straight-through CD), or the mode configuration of your EIA/TIA-232 circuit and data device (for example, synchronous DCE slave mode).
Page 79 7 — Connecting to data devices Figure 7-9 EIA/TIA-232 sync DCE slave mode configuration XCLK 6 DTR (yellow) 5 SGD (green) 1 HOUT (blue) 7 DSR (brown) SGND 2 HIN (orange) 3 RXD (black) 4 TXD (red) 8 FGD (white) Inside of female adapter connector 2937...
Page 80 7 — Connecting to data devices Figure 7-10 EIA/TIA-232 sync DCE external mode configuration XCLK 6 DTR (yellow) 5 SGD (green) 1 HOUT (blue) 7 DSR (brown) SGND 2 HIN (orange) 3 RXD (black) 4 TXD (red) 8 FGD (white) Inside of female adapter connector 2940...
Page 81 7 — Connecting to data devices Figure 7-11 EIA/TIA-232 sync DTE external or DTE slave mode configuration XCLK 7 DSR (brown) 2 HIN (orange) 5 SGD (green) 6 DTR (yellow) SGND 1 HOUT (blue) 4 TXD (red) 3 RXD (black) 8 FGD (white) Inside of female adapter connector...
Page 82 7 — Connecting to data devices Figure 7-12 EIA/TIA-232 sync DTE internal mode configuration XCLK 7 DSR (brown) 5 SGD (green) 6 DTR (yellow) 1 HOUT (blue) SGND 4 TXD (red) 2 HIN (orange) 3 RXD (black) 8 FGD (white) Inside of female adapter connector 2942...
Page 83 7 — Connecting to data devices Figure 7-13 Straight-through configuration (EIA/TIA-232 asynchronous in DCE mode) 6 DTR (yellow) 5 SGD (green) 7 DSR (brown) 1 HOUT (blue) SGND 2 HIN (orange) 3 RXD (black) 4 TXD (red) 8 FGD (white) Inside of female adapter connector 2943...
Page 84 7 — Connecting to data devices Figure 7-14 Straight-through CD configuration (EIA/TIA-232 asynchronous in DCE mode) 1 HOUT (blue) 6 DTR (yellow) 5 SGD (green) SGND 7 DSR (brown) 3 RXD (black) 4 TXD (red) 8 FGD (white) Inside of female adapter connector 2938 7-16...
Page 85 7 — Connecting to data devices Figure 7-15 Null-modem configuration (EIA/TIA-232 asynchronous in DTE mode) 7 DSR (brown) 5 SGD (green) 6 DTR (yellow) 2 HIN (orange) SGND 1 HOUT (blue) 4 TXD (red) 3 RXD (black) 8 FGD (white) Inside of female adapter connector 2939...
Page 86 7 — Connecting to data devices Figure 7-16 Null-modem CD configuration (EIA/TIA-232 asynchronous in DTE mode) 2 HIN (orange) 7 DSR (brown) 5 SGD (green) 6 DTR (yellow) SGND 1 HOUT (blue) 4 TXD (red) 3 RXD (black) 8 FGD (white) Inside of female adapter connector 2944...
Page 87 7 — Connecting to data devices Verify pin placement and insert the pins all the way. Cut the insertion pin off any unused lead and fold the wire into the adapter headshell (see Figure 7-18). Figure 7-18 Folding in unused wires 2950 Rotate the adapter connector 180°...
Page 88: Db25-To-M34 Cable Pin And Signal Assignment
7 — Connecting to data devices Figure 7-20 Closing the adapter 2952 DB25-to-M34 cable pin and signal assignment For V.35 DCMs, DB25-to-M34 cables are available for connecting the personality module to a data device that uses an M34 connector. (Do not use 90-0360-01 DB25-to-M34 cabling with the system because this cabling does not support all the system clocking modes.) The pin and signal assignments at the M34 end of the cable are given in Figures 7-21 to 7-23 (pin and signal assignments at the personality...
Page 89 7 — Connecting to data devices Figure 7-22 M34 pin and signal assignment for V.35 data application (DCE external mode) (Type 2 V.35/DB25 adapter) PGND SGND TXD(A) RXD(A) TXD(B) RXD(B) XCLK(A) SCR(A) XCLK(B) SCR(B) SCT(A) SCT(B) 2945 Figure 7-23 M34 pin and signal assignment for V.35 data application (DTE modes) (Type 2 V.35/DB25 adapter) PGND SGND...
Page 90 7 — Connecting to data devices 7-22 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 91: Connecting Node Management Equipment
8 — Connecting node management equipment 8.1 Node management equipment connections 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 92: Node Management Equipment Connections
8 — Connecting node management equipment Node management equipment connections Node management equipment connects to the 2902 MainStreet system through one of two serial ports. The ports use RJ45 connectors, labeled Modem and Terminal. Figure 8-1 identifies these connectors. Figure 8-1 Serial port connectors EDG Sig/Gnd Slot 2 Rx-1...
Page 93 8 — Connecting node management equipment Figure 8-2 Pin and signal assignment for the Modem connector SGND* *RS-232 signal ground 8991 Terminal connector pin and signal assignment Figure 8-3 shows the pin and signal assignment of the Terminal connector. The arrows indicate signal direction.
Page 94 8 — Connecting node management equipment If connecting to a rack-mount slide assembly, create a service loop long enough to allow the drawer to be fully opened. See section 4.3. Connect one end of an RJ45 cable to the Modem or Terminal connector. Use Modem for an indirect connection and Terminal for a direct connection.
Page 95: Connecting To External Alarm Equipment
9 — Connecting to external alarm equipment 9.1 External alarm connections 2902 MainStreet Technical Practices May 2002 90-2906-01...
Page 96: External Alarm Connections
9 — Connecting to external alarm equipment External alarm connections The external alarm connector allows connection to other devices for the following purposes: • to monitor an external circuit or piece of equipment that is part of your network (for example, an uninterruptible power source) by detecting the opening or closing of the Alarm In contacts •...
Page 97 9 — Connecting to external alarm equipment Figure 9-2 Alarm connector pin and signal assignment Alarm in Alarm in To system status alarm device To system status alarm device To event status alarm device To event status alarm device 8986 Figure 9-3 External alarm circuit 2902 MainStreet External...
Page 98 9 — Connecting to external alarm equipment Procedure 9-1 To make connections for monitoring external alarm devices Tools required: • one RJ11-to-spade lug cable, or • one RJ11-to-RJ11 cable and a distribution box Attach one end of the RJ11 cable to the Alarm connector. Attach the other end of the cable.
Page 99: Node Management
10 — Node management 10.1 Node management overview 10-2 10.2 Logging in to the NMTI 10-2 10.3 NMTI screen display 10-4 10.4 NMTI main menus 10-6 10.5 Softkey menus 10-7 10.6 Logging out of the NMTI 10-9 2902 MainStreet Technical Practices 10-1 May 2002 90-2906-01...
Page 100: Node Management Overview
10 — Node management 10.1 Node management overview The 2902 MainStreet system is managed through a node management session using the NMTI, the Craft Interface Node Manager or a 5620 NM. These are menu-driven software programs used to configure, operate, monitor and maintain the 2902 MainStreet system.
Page 101 F, there is a problem. See section 4.4 for information on self-tests. Press the ↵ (<Return> or <Enter>) key on the keyboard at approximately 1-second intervals until a startup message similar to the one below appears. Alcatel 2902 MainStreet, Generic 82211-ab-cd Copyright 1996, 1997 Alcatel All rights reserved.
Page 102: Nmti Screen Display
10 — Node management Figure 10-1 NMTI top-level menu 2902 MainStreet 82211-ab-cd Alarms:6 No Date 8:47R 1-CONFIG 2-HOUSE 3-MAINT 4-STATS 5-ALARMS 9-QUIT 10.3 NMTI screen display A sample NMTI screen is shown in Figure 10-2. The screen has five main areas: •...
Page 103 10 — Node management Figure 10-2 NMTI screen display Header line 2902 MainStreet 82211-ab-cd Alarm:6 No Date 8:46R Configured Installed Status Name Options DNIC DNIC Data area Command line CONFIG POSITION 1 Diagnostics line 1-TYPE 2-NAME Softkey area 8-CANCEL 9-QUIT 10435 The actual menu displays may differ slightly from those Note —...
Page 104: Nmti Main Menus
10 — Node management Diagnostics line The diagnostics line is under the command line. It displays information relevant to the user input, such as: • prompts • warnings • error messages • valid ranges for numeric parameters Softkey area The softkey area is at the bottom of the screen. Softkeys represent the functions available for the particular menu.
Page 105: Softkey Menus
10 — Node management Maintenance Maintenance functions include: • performing system diagnostics • monitoring circuit status • performing loopbacks • testing circuits • backing up and restoring the system database data • checking the status of the system NVM Statistics Statistical functions include viewing and clearing performance monitoring statistics.
Page 106 10 — Node management Procedure 10-2 Sample softkey menu A sample softkey menu is shown below. CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE SYNC*/ASYNC SK000495 Note — Some softkeys toggle between two states (for example, ENABLE/DISABLE). The toggle position not shown is selected. General menu functions General menu functions are functions available to most menus.
Page 107: Logging Out Of The Nmti
10 — Node management SHOW functions Functions such as SHOW_ALL and SHOW_TABLE are referred to as display functions. They are used to display information while you are entering a command, without interrupting the procedure. Erasing the buffer Up to 100 characters can be stored in the keyboard buffer, allowing you to type in commands or other key sequences before being prompted for them.
Page 108 10 — Node management 10-10 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 109: Node Parameters
11 — Node parameters 11.1 System serial port parameters 11-2 11.2 Date and time 11-6 11.3 Node number and node name 11-7 11.4 Network Operations Center number 11-8 11.5 Access levels 11-9 11.6 Passwords 11-13 11.7 Viewing node parameters 11-14 2902 MainStreet Technical Practices 11-1 May 2002...
Page 110: System Serial Port Parameters
11 — Node parameters 11.1 System serial port parameters The two serial ports can be configured for device type, baud rate and flow control. Serial port 1 (labeled Terminal) is configured as a DCE device. Serial port 2 (labeled Modem) is configured as a DTE device. The data format for both ports is 8 data bits, 1 stop bit, no parity and no local echo.
Page 111 11 — Node parameters Computer A PC can be connected to a serial port either directly or indirectly (remotely through a Hayes-compatible auto-answer modem). The computer must be running one of the following software packages: • terminal emulation software A PC running VT100-terminal emulation software can manage the node using the NMTI.
Page 112 11 — Node parameters Procedure 11-1 To set the device type HOUSE SER_PORT_1 SER_PORT_2 PORT_TYPE VT100* CPSS PRINTER CPSS_MODEM** SK000466 * Default for serial port 1 ** Default for serial port 2 Baud rate Baud rate is the speed of communication between the unit and the node management equipment.
Page 113 11 — Node parameters Procedure 11-2 To set the baud rate HOUSE SER_PORT_1 SER_PORT_2 BAUD_RATE 1200** 2400 4800 9600* SK000467 * Default for serial port 1 ** Default for serial port 2 Flow control Bidirectional flow control can be set for both serial ports. The three flow control settings are: •...
Page 114: Date And Time
11 — Node parameters Procedure 11-3 To set the flow control HOUSE SER_PORT_1 SER_PORT_2 FLOW_CTRL FLOW_CTRL NONE* XON/XOFF NONE* XON/XOFF SK000468 * Default 11.2 Date and time The date and time are user-configurable. Date No Date appears in the header line until the date is set for the first time or after a system reset or power failure.
Page 115: Node Number And Node Name
11 — Node parameters Procedure 11-4 To set the date and time HOUSE DATE TIME <dd-MMM-yyyy> ↵ <hh:mmA> or <hh:mmP> ↵ SK000469 where dd is the date 1 to 31 MMM is the first three letters of the month yyyy is the four digits of the year hh is the hour (1 to 12 or 0 to 23) mm is the minutes (1 to 59) 11.3...
Page 116: Network Operations Center Number
11 — Node parameters Procedure 11-5 To set the node name and number HOUSE NODE_NAME MORE <node name> ↵ NODE_NUM <node number> ↵ SK000470 where node name is up to 12 alphanumeric characters, upper case only, with no spaces or underscores node number is any unique number from 1 to 999 11.4...
Page 117: Access Levels
11 — Node parameters 11.5 Access levels Access levels are entered as part of the login process, allowing different users to access different functions. The six access levels are numbered 5 to 0, with level 5 being the highest level. A separate password can be defined for each level, except level 0.
Page 118 11 — Node parameters Level 0 cannot be redefined or assigned a password. Table 11-2 Suggested access level definitions Softkeys Suggested definition CONFIG POSITION CIRCUIT CONNECT SYNC # HOUSE SER_PORT_1 SER_PORT_2 DATE TIME NODE_NAME MORE SESSN_TIME CHNG_PSSWD NODE_NUM NOC_NUM MAINT DIAG UNDO_MAINT ON_CIRCUIT...
Page 119 11 — Node parameters Access can also be defined at the top-level menu, which is the display that appears immediately after the login. If you define access at the top-level menu as no access, the user can only log out. The access definition for a softkey overrides the access level of any softkeys underneath it if the higher-level access definition is more restrictive.
Page 120 11 — Node parameters Figure 11-1 Node management session screen showing access level definition 2902 MainStreet 82211-ab-cd ELMSTREET Alarms:1 09-JAN-2002 8:40A CONFIG POSITION “??” Level Access Type Read/Write Read/Write Read/Write Read/Write Read/Write CHANGE_ACCESS 1-LEVEL_1 2-LEVEL_2 3-LEVEL_3 4-LEVEL_4 8-CANCEL 9-QUIT Procedure 11-7 To define access levels 4 to 1 Select a softkey.
Page 121: Passwords
11 — Node parameters Procedure 11-8 To define access level 0 Level 0 access can be enabled (LEVEL_0) or disabled (NO_LEVEL_0). HOUSE SER_PORT_1 SER_PORT_2 LEVEL_0/NO_LEVEL_0* SK000472 * Default 11.6 Passwords The default password for all levels is “mainstreet”. The passwords for each level can be changed by a level 5 user (except for level 0 which has no password).
Page 122: Viewing Node Parameters
11 — Node parameters Procedure 11-9 To set passwords HOUSE — MORE –– CHNG_PSSWD –– <level5 password> ↵ LEVEL_1 LEVEL_2 LEVEL_3 LEVEL_4 LEVEL_5 <new password> ↵ <new password> ↵ PROCEED SK000473 where level5 password and new password are 8 to 12 alphanumeric characters (default level5 password is “mainstreet”) 11.7 Viewing node parameters...
Page 123: Module Position And Circuit Configuration
12 — Module position and circuit configuration 12.1 Module position and circuit identifiers 12-2 12.2 Module position configuration 12-3 12.3 Module position displays 12-4 12.4 Naming a module position 12-8 12.5 Naming a circuit 12-8 12.6 Quick circuit configurations 12-8 12.7 Viewing circuit status 12-9 2902 MainStreet Technical Practices...
Page 124: Module Position And Circuit Identifiers
12 — Module position and circuit configuration 12.1 Module position and circuit identifiers For NMTI purposes, module positions and circuits have alphanumeric identifiers. Table 12-1 lists the formats and ranges, and gives examples. For example, P2-28 identifies circuit 28 on the primary rate module in module position P2. For interface modules, there is a logical mapping between their physical positions on the Control card (1 and 2) and their NMTI identifiers.
Page 125: Module Position Configuration
12 — Module position and circuit configuration Figure 12-1 Module positions on the Control card LIM (P1) LIM (P2) EPROMs Interface module (position 2) Interface module (position 1) Personality modules (Slot 2/Slot 1) Jumper blocks Jumper blocks (J37, J40) (J41, J44) 8840 12.2 Module position configuration...
Page 126: Module Position Displays
12 — Module position and circuit configuration Reserved module positions When logical module positions M01 or M09 are configured for an X.21 or V.35 DCM, the software automatically reserves positions M02 to M08, or M10 to M16 (respectively). This provides two super-rate connections of up to 1024 kb/s each. A single super-rate connection of up to 1920 kb/s is available to position M01 when position M09 is configured as EMPTY.
Page 127 12 — Module position and circuit configuration Figure 12-2 shows a display for a single position. Figure 12-3 is a sample display showing information on all positions (SHOW_ALL). It excludes module name and option information. The display for a group of positions is similar to the SHOW_ALL display.
Page 128 12 — Module position and circuit configuration Figure 12-3 Sample module positions display (SHOW_ALL) 2902 MainStreet 82211-ab-cd Alarms:6 No Date 0:13R Configured Installed Stat Configured Installed Stat --------------------------------- --------------------------------- M01 X21_DCM X21_DCM M09 DNIC DNIC M02 RESERVED M10 EMPTY M03 RESERVED M11 EMPTY M04 RESERVED M12 EMPTY...
Page 129 12 — Module position and circuit configuration Procedure 12-3 To view a single position CONFIG — POSITION — <Pp> or <pp> ↵ where p is 1 or 2 pp is 1 or 9 Procedure 12-4 To view a group of positions CONFIG —...
Page 130: Naming A Module Position
12 — Module position and circuit configuration 12.4 Naming a module position Each module position can have a unique name. Procedure 12-6 To name a module position CONFIG — POSITION — <Pp> or <pp> ↵ — NAME — <position name> ↵ where p is 1 or 2 pp is 1 or 9...
Page 131: Viewing Circuit Status
12 — Module position and circuit configuration To copy circuit configurations, enter: CONFIG — CIRCUIT — <Pp-c> or <pp-c> ↵ — COPY_TO — <pp-c> or <Esc> ALL ↵ where p-c is a primary rate circuit, p is 1 or 2, and c is 1 to 31 pp-c is an interface circuit, pp is 1 or 9, and c is 1 or 2, or A or B Note —...
Page 132 12 — Module position and circuit configuration Figure 12-4 Circuit status display 2902 MainStreet 82211-ab-cd Alarms:8 No Date 2:51R Circuit Name Type Function Fault Status P1 - 01 E1_DNIC DATA IDLE Configured CONFIG POSITION P1-1 1-SHOW_GROUP 2-NAME 3-COPY_TO 7-MORE... 8-CANCEL 9-QUIT Procedure 12-10 To view a single circuit or all circuits on a module CONFIG —...
Page 133: System Timing And Timing Sources
13 — System timing and timing sources 13.1 System timing 13-2 13.2 Timing sources 13-3 13.3 Types of synchronization 13-6 13.4 Class number 13-7 13.5 Failure threshold 13-8 13.6 Recovery condition 13-9 13.7 Intra- and inter-sector links 13-10 13.8 Displaying the network configuration 13-12 2902 MainStreet Technical Practices 13-1...
Page 134: System Timing
13 — System timing and timing sources 13.1 System timing The various clock rates required for system timing are provided by the system synchronization unit, which is located on the Control card. The timing source that drives the SSU is user-configurable. System timing can be set for: •...
Page 135: Timing Sources
13 — System timing and timing sources Procedure 13-2 ANS configuration summary Note — When the method of synchronization is changed (standalone to ANS, or ANS to standalone), timing sources are reset to their default clock and recovery configurations (free-run and manual recovery). Enable ANS system timing on the node (see Procedure 13-3).
Page 136 13 — System timing and timing sources Timing sources can be configured for: • type of synchronization • class number • failure threshold • failure recovery When the timing sources have been configured and timing has been enabled, the 2902 MainStreet system automatically generates its own map of all timing sources. Each time a configuration change occurs (for example, when a new 2902 MainStreet node is brought on-line or a timing source is reconfigured), the map is updated.
Page 137 13 — System timing and timing sources Figure 13-1 Synchronization display 2902 MainStreet 82211-ab-cd NEWYORK Alarms:2 09-JAN-1997 1:00P Auto Net Sync: Disabled Node Class: 15 Current Class: 15 Number Source Recovery Class Threshold Status Auto Not Ready Auto Not Ready Current source of synchronization is Default (Free Run) CONFIG SYNCH 1-SRC_NUM...
Page 138: Types Of Synchronization
13 — System timing and timing sources Enabling a timing source When a source is enabled, it becomes available to the system as a source of timing. If an enabled source has a higher preference (lower class number) than the current source of timing, the enabled source is automatically selected as the new source of timing.
Page 139: Class Number
13 — System timing and timing sources Internal For internal mode, the system uses its internal clock as its internal crystal oscillator. The oscillator supplies a timing reference accurate to ±25 ppm. When synchronized to this source, the timing is said to be free running. Derived For derived mode, an 8 kHz clock is derived from a primary rate link.
Page 140: Failure Threshold
13 — System timing and timing sources Timing sources can be assigned the same class number if they can be traced back to the same source along identical paths (that is, paths that provide no degradation or equivalent degradation of the timing signal). Procedure 13-6 To assign a class number to a timing source CONFIG —...
Page 141: Recovery Condition
13 — System timing and timing sources Procedure 13-8 To assign the failure threshold CONFIG — SYNCH — SRC_NUMBER — <source number> ↵ THRESHOLD <n> ↵ <Esc> UNLIMITED* SK000477 where source number is 1 or 2 n is 0 to 30 * Default 13.6 Recovery condition...
Page 142: Intra- And Inter-Sector Links
13 — System timing and timing sources Manual When manual recovery is selected, the system places the failed source in the disabled state. The source is not used as a source of synchronization until manually enabled and selected. Procedure 13-9 To configure the recovery method CONFIG —...
Page 143 13 — System timing and timing sources Figure 13-2 Intra- and inter-sector links Node Node Node Node Intra-sector links Node Intra-sector links Node Node Inter-sector link Node Sector A Intra-sector Node links Node Sector B 8987 Procedure 13-10 To configure an intra- or an inter-sector link In the following softkey menu, select ENABLE for an intra-sector link and DISABLE for an inter-sector link.
Page 144: Displaying The Network Configuration
13 — System timing and timing sources 13.8 Displaying the network configuration When ANS system timing is used, it may be necessary to view the network configuration. Figure 13-3 shows a network configuration display, indicating the number of hops from the local node to other nodes, the local ANS links (primary rate circuit number) and the number of nodes in the network.
Page 145: Cpss
14 — CPSS 14.1 CPSS overview 14-2 14.2 CPSS channel connections 14-2 2902 MainStreet Technical Practices 14-1 May 2002 90-2906-01...
Page 146: Cpss Overview
14 — CPSS 14.1 CPSS overview CPSS is a proprietary communication protocol, a packet-switched system similar to X.25. MainStreet products use CPSS messages to exchange information with each other and with the 5620 NM over the network. In case of network failure, CPSS can also be used to communicate with the network manager over modems connected to serial ports.
Page 147 14 — CPSS Procedure 14-1 To connect or disconnect timeslot 0 CPSS CONFIG — CONNECT <CPSS> ↵ <Pp-TS0> ↵ TO_CIRCUIT DISC_FROM TO_CIRCUIT DISCONNECT <CPSS> ↵ <Pp-TS0> ↵ SK000480 where p is 1 or 2 Procedure 14-2 To connect or disconnect a 64 kb/s CPSS channel CONFIG —...
Page 148 14 — CPSS Set the baud rate of the serial port to match the baud rate of the network manager. Enter: HOUSE SER_PORT_1 SER_PORT_2 BAUD_RATE 1200** 2400 4800 9600* SK000482 where * Default for serial port 1 ** Default for serial port 2 Set the device type for a personal computer running network management software.
Page 149 14 — CPSS Set the baud rate of the serial port to match the baud rate of the network manager. Enter: HOUSE SER_PORT_1 SER_PORT_2 BAUD_RATE 1200** 2400 4800 9600* SK000482 where * Default for serial port 1 ** Default for serial port 2 Set the device type for a modem.
Page 150 14 — CPSS 14-6 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 151: E1 Module Operating Parameters
15 — E1 module operating parameters 15.1 E1 module overview 15-2 15.2 Network connectors 15-3 15.3 E1 framing format 15-4 15.4 Signal earthing (E1 G.703 LIM only) 15-4 15.5 Master/slave operation (E1 HDSL and Optical LIMs only) 15-6 15.6 Trunk conditioning 15-7 15.7 Fault classes 15-12...
Page 152: E1 Module Overview
15 — E1 module operating parameters 15.1 E1 module overview The 2902 MainStreet system supports four 2.048 Mb/s primary rate modules: • E1 G.703 LIM • E1 HDSL LIM • E1 HDSL LIM2 • E1 Optical LIM There are two E1 G.703 LIM variants—one for 75 Ω network termination and another for 120 Ω...
Page 153: Network Connectors
15 — E1 module operating parameters E1 module IDs The 2902 MainStreet NMTI identifies E1 LIMs by the module IDs listed in Table 15-1. See section 26.7 for information about displaying module IDs in the NMTI. Table 15-1 E1 module IDs Module ID E1 LIM E1 HDSL LIM...
Page 154: E1 Framing Format
15 — E1 module operating parameters 15.3 E1 framing format The E1 framing options determine the framing structure and the timeslot usage of a 2.048 Mb/s E1 link. The framing type cannot be changed or configured if any circuits are connected. Two framing options are available: CAS and CCS.
Page 155 15 — E1 module operating parameters Transmit shielding can be configured for E1 G.703 LIM variants with 75 Ω termination impedance (BNC connection). The four options are: • receive line earthed (RX_EARTH) • receive line floating (RX_FLOAT) • transmit line earthed (TX_EARTH) •...
Page 156: Master/Slave Operation (E1 Hdsl And Optical Lims Only)
15 — E1 module operating parameters 15.5 Master/slave operation (E1 HDSL and Optical LIMs only) To establish a link, the E1 HDSL or Optical LIM at each end of the link must be configured as either a master or slave LIM. However, both LIMs cannot have the same configuration.
Page 157: Trunk Conditioning
15 — E1 module operating parameters For E1 HDSL LIM2s with software generic 82211-H0-10 or later, or for E1 HDSL LIMs or Optical LIMs with any software generic, enter: CONFIG — POSITION — <Pp> ↵ — OPTIONS MASTER*/SLAVE SK000487 where p is 1 or 2 * Default 15.6 Trunk conditioning...
Page 158 15 — E1 module operating parameters Signaling path Both the primary rate circuit and the connected circuit undergo fault signaling as configured for the primary rate circuit (see section 16.2). For the primary rate circuit, the signaling path is driven to idle for 2.5 seconds (which drops any call that may be in progress), then to seized or idle (depending on how the E1 circuit fault signaling is configured).
Page 159 15 — E1 module operating parameters Figure 15-2 Two-way trunk conditioning Information Signaling All 1s SEIZED (primary rate circuit) IDLE All 0s (not primary rate circuit) Fault Direction of transmission Fault Signaling path Information path Connected 2902 Primary rate circuit MainStreet circuit Information path...
Page 160 15 — E1 module operating parameters Unlike two-way trunk conditioning, if the fault signaling is seized, a seized signaling code is transmitted without an idle signaling code first being outputted for a fixed period of time. If the connected circuit is not a primary rate circuit, the node continues to transmit the signaling being outputted.
Page 161 15 — E1 module operating parameters Figure 15-4 One-way trunk conditioning (Group 2) Signaling Information SEIZED If primary All 1s rate circuit (primary rate circuit) IDLE If not primary All 0s Frozen rate circuit (not primary rate circuit) Fault Direction of transmission Fault Signaling path...
Page 162: Fault Classes
15 — E1 module operating parameters Procedure 15-6 To disable trunk conditioning for an E1 circuit If you turn fault signaling off for any E1 circuit, no trunk conditioning is applied to that circuit regardless of how the link is configured for trunk conditioning. That is, the circuit connected to the link stays connected during any red or yellow alarms.
Page 163: Alarm Declaration And Clearing Times
15 — E1 module operating parameters Procedure 15-7 To configure fault classes Softkeys with the suffix _OFF disable trunk conditioning for their fault class; those with the suffix _ON enable trunk conditioning. CONFIG — POSITION — <Pp> ↵ — OPTIONS — MORE — TRUNK_COND FRAME_OFF/ DIST_OFF/ FAILED_OFF/...
Page 164: E1 Statistics
15 — E1 module operating parameters Procedure 15-8 To set the alarm declaration and clearing times CONFIG — POSITION — <Pp> ↵ — OPTIONS — MORE — ALARM_TIME DECLARE CLEAR <n> ↵ <n> ↵ SK000490 where p is 1 or 2 n is 1 to 300 (1 equals 0.1 second) 15.9 E1 statistics...
Page 165: E1 Circuit Operating Parameters
16 — E1 circuit operating parameters 16.1 E1 signaling type 16-2 16.2 E1 fault signaling 16-2 2902 MainStreet Technical Practices 16-1 May 2002 90-2906-01...
Page 166: E1 Signaling Type
16 — E1 circuit operating parameters 16.1 E1 signaling type Signaling refers to the codes and protocol for call setup, call tear-down and status information between two devices over a primary rate link. The signaling type defines how signaling information is exchanged with the far-end device. The signaling type choices are: •...
Page 167 16 — E1 circuit operating parameters Fault signaling out-of-service type A or B codes are used by tandem nodes to notify remote circuits of link failures. Out-of-service type A signaling is an all ones signal. Out-of-service type B signaling (0110) can be used if an all ones signal cannot be used, for example, when an all ones signal has meaning for the cross-connected circuit.
Page 168 16 — E1 circuit operating parameters 16-4 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 169: Dnic And 2B1Q Modules
17 — DNIC and 2B1Q modules 17.1 Understanding DNIC and 2B1Q modules 17-2 17.2 DNIC and 2B1Q circuit configuration and operating parameters 17-2 17.3 Device mode 17-3 17.4 Device gender 17-4 17.5 Duplex method 17-5 17.6 RTS/CTS delay 17-5 17.7 Control signals 17-6 17.8 Data structure (asynchronous only) 17-7...
Page 170: Understanding Dnic And 2B1Q Modules
17 — DNIC and 2B1Q modules 17.1 Understanding DNIC and 2B1Q modules DNIC and 2B1Q modules are dual-circuit modules that connect to data devices through DTUs. These modules can be installed in either interface module position on the Control card. DNIC modules support remote connections of up to two X.21 or V.35 data devices, and up to eight EIA/TIA-232 data devices via a 2600 MainStreet series DTU;...
Page 171: Device Mode
17 — DNIC and 2B1Q modules DNIC and 2B1Q circuit operating parameters Once you configure the module position, the circuits assume the default settings for each of the following operating parameters: • device mode • device gender • duplex method (two-port DTUs only) •...
Page 172: Device Gender
17 — DNIC and 2B1Q modules Procedure 17-2 To set the device mode CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE SYNC*/ASYNC SK000495 where pp is 1 or 9, and c is A or B * Default 17.4 Device gender Data circuits support two device genders: •...
Page 173: Duplex Method
17 — DNIC and 2B1Q modules 17.5 Duplex method Data circuits support two duplex modes: • half duplex • full duplex Half-duplex transmission uses a single transmission path. Two connected devices can transmit and receive, but not at the same time. If you select half duplex, the RTS/CTS delay option can be configured (described in section 17.6).
Page 174: Control Signals
17 — DNIC and 2B1Q modules Procedure 17-5 To set the RTS/CTS delay The RTS/CTS delay can be set for two-port DTUs. RTS/CTS delay cannot be set for the 2606 MainStreet DTU. The RTS/CTS delay can only be set when a circuit is configured for half-duplex mode (see section 17.5) or as a multidrop slave (see section 17.10).
Page 175: Data Structure (Asynchronous Only)
17 — DNIC and 2B1Q modules For 56 kb/s transparent channels, when RTS is set for end-to-end operation, the value of RTS is forced into bit position 8. The far-end DTU maps RTS to its own DCD lead going to DTE devices. With both DTUs operating in end-to-end signaling, incoming RTS in bit position 8 is mapped to DCD.
Page 176 17 — DNIC and 2B1Q modules Character length Character length is the number of data bits used to transmit a character in asynchronous transmission. Character length can be set to: • 5 bits • 6 bits • 7 bits • 8 bits (default) Stop bits Stop bits signify the end of a character in asynchronous transmission.
Page 177: Clocking (Synchronous Only)
17 — DNIC and 2B1Q modules 17.9 Clocking (synchronous only) Synchronous data devices require two clocking signals: one for the receive data stream and one for the transmit data stream. The receive clock supplies timing for receive data; the transmit clock supplies timing for transmit data. Transmit data and receive data are defined relative to the data device configured as DTE;...
Page 178 17 — DNIC and 2B1Q modules Clocking source Meaning External The user equipment provides the transmit clock; that is, the XCLK pin from the DTE. Slave The circuit extracts the transmit clock from the data stream. Internal, These three options indicate the configuration of the transmit clock of the external or attached DCE device.
Page 179 17 — DNIC and 2B1Q modules Table 17-4 DTU clocking applications - DTE mode DTU #1 (DTE) DTU #2 (DTE) Transparent Application Slave Locked Slave Locked Default. Used when: • the data network is locked to the 2902 MainStreet network •...
Page 180: Multidrop Data Bridge
17 — DNIC and 2B1Q modules 17.10 Multidrop data bridge In a multidrop data bridge, several broadcast destination circuits (called slaves) take turns using the same bandwidth to communicate with one broadcast source circuit (called the master); for example, several terminals would take turns communicating with a host computer.
Page 181: Super-Rate Configuration For Dnic Or 2B1Q Modules
17 — DNIC and 2B1Q modules Procedure 17-9 To configure a master or slave multidrop device CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE — MULTIDROP DISABLE* MASTER SLAVE SK000501 where pp is 1 or 9, and c is A or B * Default 17.11 Super-rate configuration for DNIC or 2B1Q modules...
Page 182: Loss-Of-Synchronization Debounce Time (Dnic Only)
17 — DNIC and 2B1Q modules Set the interface speed. The interface speed must be a whole number multiple of the transport bandwidth. For DNIC and 2B1Q modules, this means the transport bandwidth is 64 kb/s and the interface speed is 128 kb/s. Procedure 17-10 To configure transparent rate adaption CONFIG —...
Page 183 17 — DNIC and 2B1Q modules Table 17-5 Firmware IDs for DTUs with improved debounce time Mainstreet DTUs Firmware ID 2601, 2601AN, 2602, 2602AN, 2603 and 2603AN 2606 2608 2610 DNIC module debounce The debounce timer on the DNIC module can be configured to accommodate various degrees of line noise that might produce a loss of synchronization.
Page 184 17 — DNIC and 2B1Q modules Figure 17-4 Debounce time configuration display 2902 MainStreet 82211-ab-cd Alarms:1 No Date 1:28R Configured Installed Status Name Options DNIC Empty Empty Loss Of Sync Debounce - DTU end : 2000 ms (Not Configurable) Loss Of Sync Debounce - Node end: 250 ms CONFIG POSITION 1 OPTIONS SYNC_DEB NODE_LOSS 1-50_ms...
Page 185: Rs-232 Dcm
18 — RS-232 DCM 18.1 Understanding the RS-232 DCM 18-2 18.2 RS-232 DCM circuit operating parameters 18-2 18.3 Device mode 18-3 18.4 Device gender 18-3 18.5 Full duplex 18-4 18.6 RTS/CTS delay 18-4 18.7 Control signals 18-5 18.8 Data structure (asynchronous only) 18-6 18.9 Clocking (synchronous only) 18-7...
Page 186: Understanding The Rs-232 Dcm
18 — RS-232 DCM 18.1 Understanding the RS-232 DCM The RS-232 DCM is a dual-circuit module that offers data connectivity conforming to EIA/TIA-232 standards. The module can be installed in either interface module position on the Control card. Data devices connect directly to this DCM, eliminating the need for an external DTU.
Page 187: Device Mode
18 — RS-232 DCM 18.3 Device mode The RS-232 DCM supports two device modes: • synchronous • asynchronous When you configure a circuit as synchronous, clocking parameters must be set (see section 18.9). When configured as asynchronous, the data structure must be set (see section 18.8).
Page 188: Rts/Cts Delay
18 — RS-232 DCM Procedure 18-3 To set the device gender Select DTE if the device connected to the RS-232 DCM circuit is DCE. Select DCE if the device is DTE. CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE DCE*/DTE SK000496 where pp is 1 or 9, and c is 1 or 2...
Page 189: Control Signals
18 — RS-232 DCM 18.7 Control signals Control signals provide the handshaking required for call setup, call tear-down and synchronization. Control signals can be configured as: • high (ON) • low (OFF) • end-to-end (END_TO_END) End-to-end means the state of the local signal follows that of the signal source at the remote end of the network.
Page 190: Data Structure (Asynchronous Only)
18 — RS-232 DCM Procedure 18-5 To set RS-232 DCM control signals Selecting ON or OFF for inputs configures them as ASSUMED_ON or ASSUMED_OFF. Selecting ON or OFF for outputs configures them as FORCED_ON or FORCED_OFF. CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — CTRL_LEADS INPUTS OUTPUTS END_TO_END...
Page 191: Clocking (Synchronous Only)
18 — RS-232 DCM Stop bits Stop bits signify the end of a character in asynchronous transmission. The number of stop bits can be set to: • 1 bit (default) • 2 bits Parity Parity is an error detection method that adds an extra bit to each transmitted character.
Page 192 18 — RS-232 DCM Figure 18-1 Transmit and receive clocks Transmit clock Transmit data data data device device Receive data Receive clock 1535 The two parameters for configuring clocking for synchronous transmissions are: • transmit clock source • type of synchronous clocking Transmit clock source Table 18-2 explains the clock sources for DCE and DTE circuit genders.
Page 193: Multidrop Data Bridge
18 — RS-232 DCM If you are experiencing high bit error rates due to a combination of interface speed, cable length and DCM clocking configurations, try inverting the receive clock (RX_INV). Procedure 18-7 To configure clocking The INTERNAL softkey is not available when transparent rate adaption is selected. CONFIG —...
Page 194 18 — RS-232 DCM Master and slave circuits must be configured with the same starting data position and transport bandwidth (see chapters 21 and 22). To facilitate this, the 2902 MainStreet system automatically sets the master circuit configuration to full duplex and signaling off, and the slave circuit configuration to half duplex and signaling off.
Page 195: X.21 And V.35 Dcms
19 — X.21 and V.35 DCMs 19.1 Understanding X.21 and V.35 DCMs 19-2 19.2 X.21 and V.35 circuit operating parameters 19-2 19.3 Device mode 19-4 19.4 Device gender 19-4 19.5 Duplex method 19-5 19.6 RTS/CTS delay 19-6 19.7 Control signals 19-7 19.8 Data structure (asynchronous only) 19-8...
Page 196: Understanding X.21 And V.35 Dcms
19 — X.21 and V.35 DCMs 19.1 Understanding X.21 and V.35 DCMs The X.21 and V.35 DCMs are single-circuit modules that offer data connectivity conforming to X.21 and V.35 standards respectively. The modules can be installed in either interface module position on the Control card. These modules support subrate interface speeds (up to 64 kb/s) and super-rate interface speeds (two connections up to 1024 kb/s each, or a single connection up to 1920 kb/s).
Page 197 19 — X.21 and V.35 DCMs The circuit configuration parameters for the X.21 and V.35 DCMs are: • device mode • device gender • duplex method • RTS/CTS delay • control signals • data structure (asynchronous only) • clocking (synchronous only) •...
Page 198: Device Mode
19 — X.21 and V.35 DCMs 19.3 Device mode The circuit on the X.21 and V.35 DCMs supports two device modes: • synchronous • asynchronous When the circuit is configured as synchronous, clocking parameters must be set (see section 19.9). When the circuit is configured as asynchronous, the data structure must be set (see section 19.8).
Page 199: Duplex Method
19 — X.21 and V.35 DCMs Procedure 19-3 To set the device gender CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE DCE*/DTE SK000496 where pp is 1 or 9, and c is 1 * Default 19.5 Duplex method Data circuits support two duplex modes: •...
Page 200 19 — X.21 and V.35 DCMs Procedure 19-4 To set the duplex method CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE HALF_DPLX/FULL_DPLX* SK000497 where pp is 1 or 9, and c is 1 * Default 19.6 RTS/CTS delay The RTS/CTS delay regulates data flow on half-duplex lines.
Page 201: Control Signals
19 — X.21 and V.35 DCMs 19.7 Control signals Control signals provide the handshaking required for call setup, call tear-down and synchronization. Control signals can be configured as: • high (ON) • low (OFF) • end to end (END_TO_END) End-to-end means the state of the local signal follows that of the signal source at the remote end of the network.
Page 202: Data Structure (Asynchronous Only)
19 — X.21 and V.35 DCMs Procedure 19-6 To set the X.21 and V.35 control signals CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — CTRL_LEADS INPUTS OUTPUTS END_TO_END SK000512 where pp is 1 or 9, and c is 1 19.8 Data structure (asynchronous only) The data structure of asynchronous transmission has three configurable...
Page 203: Clocking (Synchronous Only)
19 — X.21 and V.35 DCMs Stop bits Stop bits signify the end of a character in asynchronous transmission. The number of stop bits can be set to: • 1 bit (default) • 2 bits Parity Parity is an error detection method that adds an extra bit to each transmitted character.
Page 204 19 — X.21 and V.35 DCMs Figure 19-2 Transmit and receive clocks Transmit clock Transmit data data data device device Receive data Receive clock 1535 The two parameters for configuring clocking for synchronous transmissions are: • transmit clock source • type of synchronous clocking Transmit clock source When the device mode is synchronous, the clocking source between X.21 or V.35...
Page 205 19 — X.21 and V.35 DCMs Type of synchronous clocking For both the X.21 and V.35 DCMs, when you configure the type of synchronous clocking, you are configuring the effect that the 2902 MainStreet system has on clocks passing through it. The type can be set: •...
Page 206: Multidrop Data Bridge
19 — X.21 and V.35 DCMs 19.10 Multidrop data bridge In a multidrop data bridge, several broadcast destination circuits (called slaves) take turns using the same bandwidth to communicate with one broadcast source circuit (called the master); for example, several terminals would take turns communicating with a host computer.
Page 207: Super-Rate Configuration For The X.21 And V.35 Dcms
19 — X.21 and V.35 DCMs Procedure 19-9 To configure a master or slave device CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE — MULTIDROP DISABLE* MASTER SLAVE SK000501 where pp is 1 or 9, and c is 1 * Default 19.11 Super-rate configuration for the X.21 and V.35 DCMs...
Page 208 19 — X.21 and V.35 DCMs Set the transport bandwidth. Set the interface speed. Setting the super-rate interface speed The interface speed and the transport bandwidth determine the number of channels required on the primary rate link for the super-rate circuit. This number, called the multiplier, is determined by the calculation: multiplier = interface speed / transport bandwidth where the interface speed is the data rate of the data device, the transport bandwidth...
Page 209 19 — X.21 and V.35 DCMs Table 19-3 Super-rate speeds, required channels and module positions DS0s used Reserved Transport bandwidth (kb/s) positions 0 or 7 Interface speed (kb/s) 1024 1088 1008 1152 1064 1216 1280 1120 1344 1008 1176 1408 1056 1232 1472...
Page 210 19 — X.21 and V.35 DCMs Before position M01 can reserve 15 positions, position M09 must be configured as EMPTY. This disables position M09. As long as position M09 is reserved (disabled), removing or installing a module in position M09 (physical position 2 on the Control card) does not generate module insertion or removal alarms.
Page 211 19 — X.21 and V.35 DCMs Attempting to set an interface speed above the maximum allowed by the transport bandwidth and the number of reserved module positions displays the message “Not enough additional positions to support I/F speed”. For example, the transport bandwidth is 64 kb/s, the number of reserved positions is 7, and an attempt to set the interface speed for 1088 kb/s is made.
Page 212 19 — X.21 and V.35 DCMs Procedure 19-13 To set the interface speed CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — RATE_ADAPT — I/F_SPEED — <speed> ↵ where pp is 1 or 9, and c is 1 speed is the interface speed in kb/s 19-18 2902 MainStreet Technical Practices 90-2906-01...
Page 213: Codirectional Dcm
20 — Codirectional DCM 20.1 Understanding the Codirectional DCM 20-2 20.2 Codirectional DCM Module and circuit parameters 20-2 20.3 Trunk conditioning 20-3 20.4 Alarm times 20-3 20.5 8 kHz timing 20-4 20.6 All Ones alarm indication signal 20-4 2902 MainStreet Technical Practices 20-1 May 2002 90-2906-01...
Page 214: Understanding The Codirectional Dcm
20 — Codirectional DCM 20.1 Understanding the Codirectional DCM The Codirectional DCM provides an interface for two 64 kb/s full-duplex synchronous E1 circuits conforming to ITU-T G.703. ITU-T G.703 describes a codirectional interface which transmits 64 kb/s data over four wires. The Codirectional DCM does not support out-of-band DS0 signaling or super-rate connections.
Page 215: Trunk Conditioning
20 — Codirectional DCM 20.3 Trunk conditioning The Codirectional DCM performs trunk conditioning when it detects a loss of input. Trunk conditioning defines the type of data transmitted on the information path. Trunk conditioning can be defined for all outgoing transmissions on the Codirectional DCM.
Page 216: Khz Timing
20 — Codirectional DCM Procedure 20-3 To configure alarm times CONFIG — POSITION — <pp> ↵ — OPTIONS — ALARM_TIME DECLARE CLEAR <time> ↵ <time> ↵ SK000517 where pp is 1 or 9 time is 0.1 to 10 seconds in increments of 0.1 second 20.5 8 kHz timing You can configure the Codirectional DCM to generate 8 kHz timing when a circuit...
Page 217 20 — Codirectional DCM By default, the Codirectional DCM generates an all ones signal when a circuit is disconnected. You can configure the Codirectional DCM so that it does not generate the all ones signal, thereby preventing the far end from entering the AIS All Ones alarm condition.
Page 218 20 — Codirectional DCM 20-6 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 219: Transparent Rate Adaption
21 — Transparent rate adaption 21.1 Rate adaption overview 21-2 21.2 Transparent rate adaption overview 21-2 21.3 Transport bandwidth 21-3 21.4 Transport position 21-5 2902 MainStreet Technical Practices 21-1 May 2002 90-2906-01...
Page 220: Rate Adaption Overview
21 — Transparent rate adaption 21.1 Rate adaption overview Rate adaption techniques allow subrate data devices to use a 64 kb/s channel by formatting the data to conform to the primary rate framing structure. Using rate adaption, several subrate data devices can be multiplexed onto one primary rate channel.
Page 221: Transport Bandwidth
21 — Transparent rate adaption Figure 21-1 Transparent frame 2902 MainStreet 82211-ab-cd Alarms:1 No Date 0:01R DATA CCT: M01-01 NAME: Configured as : SYNC-DCE-FULL DUPLEX Rate Adaption : TRANSPARENT-32 kbps Transport Posn : B7 Interface Speed : 32 kbps Data Position : NA Signalling : NA...
Page 222 21 — Transparent rate adaption Table 21-1 Interface speeds (transparent rate adaption) Module Interface speeds (kb/s) DNIC and 2B1Q 8, 16, 32, 48, 56, 64 RS-232 DCM 8, 16, 32, 48, 56, 64 Manufacturing codes A and B RS-232 DCM 8, 16, 24, 32, 40, 48, 56, 64 Manufacturing code D V.35 DCM...
Page 223: Transport Position
21 — Transparent rate adaption Procedure 21-2 To set transport bandwidth Transport bandwidth and transport position are inter-related parameters, with transport position taking priority. Changing the transport position may change the transport bandwidth. See section 21.4 for details. CONFIG — CIRCUIT— <pp-c> ↵ — FUNCTION — RATE_ADAPT TRANS_BW <n>...
Page 224 21 — Transparent rate adaption The 2902 MainStreet system gives priority to transport position over transport bandwidth. Changing the transport position may change the transport bandwidth. If there are not enough elements to the right of the transport position, the transport bandwidth is automatically reduced to the available amount, even if you have configured it for more.
Page 225: Hcm Rate Adaption
22 — HCM rate adaption 22.1 Rate adaption overview 22-2 22.2 HCM rate adaption overview 22-2 22.3 Transport bandwidth 22-3 22.4 Transport position 22-5 22.5 Signaling and the signaling bit stream 22-5 22.6 Interface speed 22-6 22.7 Data position 22-8 2902 MainStreet Technical Practices 22-1 May 2002...
Page 226: Rate Adaption Overview
22.2 HCM rate adaption overview HCM rate adaption is an Alcatel proprietary rate adaption scheme. It allows users to establish data channels using a wider variety of interface speeds than is possible with other rate adaption techniques.
Page 227: Transport Bandwidth
22 — HCM rate adaption The F and S bits each occupy one element (800 b/s of bandwidth each). Any element that does not contain an F, S or D represents unused bandwidth. Some combinations of transport bandwidth, transport Note — position and data position parameters are incompatible.
Page 228 22 — HCM rate adaption The transport bandwidth is set in 8 kb/s increments, where each column, having ten 800 b/s elements, represents 8 kb/s. Setting the number of columns ( n = 1 to 8) sets the transport bandwidth ( n x 8 kb/s). The default is 64 kb/s ( n = 8). Since the default setting for transport bandwidth is 64 kb/s, you do not need to reduce the transport bandwidth unless the HCM channel is going to be: •...
Page 229: Transport Position
22 — HCM rate adaption 22.4 Transport position In HCM rate adaption, transport position defines the column where the F bit is located (B7 to B0). The default is B7. The F bit is always in the first row (F0). The transport position is set by entering B n , where B n is B0 to B7, with a default of B7.
Page 230: Interface Speed
22 — HCM rate adaption 22.6 Interface speed The interface speed (or data rate) is the rate at which the device is transmitting data. The speeds supported for HCM rate adaption are listed in Table 22-1. 22-6 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 231 22 — HCM rate adaption Table 22-1 Interface speeds (HCM rate adaption) Default Module Device mode Interface speed (b/s) (b/s) 1200 2400 9600 DNIC and 2B1Q Asynchronous 4800 9600 19 200 38 400 Synchronous 1200 2400 9600 4800 8000 9600 16 000 19 200 32 000...
Page 232: Data Position
22 — HCM rate adaption Oversampling Asynchronous rates of up to 2400 b/s that are not listed in Table 22-1 can be supported by oversampling. To oversample: Set the device mode to synchronous (see the device mode section in the appropriate data module chapter).
Page 233 22 — HCM rate adaption Procedure 22-6 To set the data position CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — RATE_ADAPT DATA_POSN <Ff-Bn> ↵ SK000524 where pp is 1 or 9, and c is 1 or 2, or A or B Ff-Bn is the data position identifier: Ff is the row number (F0 to F9), and Bn is the column number (B0 to B7) 2902 MainStreet Technical Practices...
Page 234 22 — HCM rate adaption 22-10 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 235: Cross-Connecting Circuits
23 — Cross-connecting circuits 23.1 Types of cross-connections 23-2 23.2 Simple connections 23-2 23.3 Connecting super-rate circuits 23-4 23.4 Circuit connections display 23-5 23.5 Protecting connections (RAPID protection switching) 23-5 23.6 Disconnecting connections 23-10 2902 MainStreet Technical Practices 23-1 May 2002 90-2906-01...
Page 236: Types Of Cross-Connections
23 — Cross-connecting circuits 23.1 Types of cross-connections Cross-connections can be basic or specialized. Basic cross-connections include the following types: • simple • super-rate • protecting Specialized cross-connections are used for the following applications: • multidrop data bridge connections (see section 17.10) •...
Page 237 23 — Cross-connecting circuits Drop traffic goes to the devices connected to the drop and insert node; insert traffic comes from the devices connected to the node. Drop and insert traffic between Nodes A and B cross-connect through P2; traffic between Nodes C and B cross-connect through P1.
Page 238: Connecting Super-Rate Circuits
23 — Cross-connecting circuits 23.3 Connecting super-rate circuits A super-rate circuit connection is a connection between a circuit on a DNIC, 2B1Q, X.21 or V.35 module and two or more DS0 channels of a primary rate link. A super-rate connection uses a single cross-connection between the data module circuit and the master primary rate circuit (the first primary rate channel of the super-rate connection).
Page 239: Circuit Connections Display
23 — Cross-connecting circuits 23.4 Circuit connections display You can view a display of a single circuit connection or a group of connections. Figure 23-2 is an example of the SHOW_GROUP display, showing a simple RS-232 DCM circuit connection (P1-01 to M01-1) and a V.35 DCM super-rate cross-connection (P1-05 through P1-08 to M05-01).
Page 240 23 — Cross-connecting circuits The preferred connection is made up of a protected circuit and its preferred circuit. The protecting connection is made up of the protected circuit and its protecting circuit. The process of automatically switching from the preferred to the protected connection is called protection switching.
Page 241 23 — Cross-connecting circuits Figure 23-4 shows an example of protection switching that involves tandem nodes. Each node #1 circuit on link E1(1) is protected by a circuit on link E1(3). Each node #3 circuit on link E1(2) is protected by a circuit on link E1(4). If link E1(1) fails: An alarm is raised at node #1 and protection switching occurs;...
Page 242 23 — Cross-connecting circuits Automatic override Figure 23-5 shows an example where circuit 1-1 is connected to circuit P1-1 and is protected by circuit P2-1. Circuit 2-1 is connected to circuit P2-1. When all circuits are available, the connection between circuits 1-1 and P1-1 is active, as is the connection between circuits 2-1 and P2-1.
Page 243 23 — Cross-connecting circuits Figure 23-6 Protecting connection made 2902 MainStreet node Protected Preferred Data Control Primary circuit circuit module card rate module Data device Primary P1-1 rate link Protecting connection Preferred connection Data Primary module rate module Primary P2-1 rate link protected Protecting...
Page 244: Disconnecting Connections
23 — Cross-connecting circuits Make the protecting connection. CONFIG — CONNECT — <pp-c> or <Pp-c> ↵ PROT_BY PROTECTING <pp-c> ↵ <Pp-c> ↵ SK000525 where pp is the interface module for the protected circuit, either 1 or 9 p is the primary rate module for the protecting circuit, 1 or 2 c is the circuit number, 1 to 31 (for primary rate), or 1, 2, A or B (for interface module) A protecting connection can be made from the perspective of the protected circuit (PROT_BY) or the protecting circuit (PROTECTING).
Page 245 23 — Cross-connecting circuits Procedure 23-5 To disconnect a simple circuit CONFIG — CONNECT — <pp-c> or <Pp-c> ↵ — DISCONNECT PREFERRED PROTECTION SK000526 where pp is 1 or 9, c is 1, 2, A or B p is 1 or 2, c is 1 to 31 Procedure 23-6 To disconnect all circuits CONFIG —...
Page 246 23 — Cross-connecting circuits 23-12 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 247: Visual Indicators
24 — Visual indicators 24.1 LEDs 24-2 24.2 Front panel LEDs 24-2 24.3 Rear panel LEDs 24-4 24.4 Interface module LEDs 24-6 2902 MainStreet Technical Practices 24-1 May 2002 90-2906-01...
Page 248: Leds
24 — Visual indicators 24.1 LEDs LEDs are located on the front panel, the rear panel (mounted on the Control card), and the interface modules. Table 24-1 lists the colors of the LEDs. Table 24-1 LED colors LED location LED name Color Front panel Power...
Page 249 24 — Visual indicators Figure 24-1 Front panel LEDs Power Processor Event Status Out of Sync 1 System Status Out of Sync 2 2902 MainStreet Power Processor Event Status Out of Sync 1 Network Termination Unit System Status Out of Sync 2 8831 2902 MainStreet Technical Practices 24-3...
Page 250: Rear Panel Leds
24 — Visual indicators Table 24-2 Front panel LED operation Normal operation Troubleshooting Power Lit continuously If the Power LED is not lit continuously: • verify that the power switch is on • verify that the power cable is correctly attached to the system and to an unswitched power source •...
Page 251 24 — Visual indicators The Control card indicators are shown in Figure 24-2. Table 24-3 describes their normal operation and gives troubleshooting advice. Figure 24-2 Control card indicators (rear panel) Loop Status Display EDG Sig/Gnd Slot 2 Rx-1 Tx-1 Rx-2 Tx-2 Line-1 Line-2...
Page 252: Interface Module Leds
24 — Visual indicators 24.4 Interface module LEDs The RS-232 and Codirectional DCMs have three LEDs, as shown in Figure 24-3. The X.21 and V.35 DCMs, and the DNIC and 2B1Q modules have two LEDs, as shown in Figure 24-4. Table 24-4 describes their operation. Figure 24-3 LEDs on the RS-232 DCM Circuit 2 status...
Page 253 24 — Visual indicators Table 24-4 Interface module LED operation Operation RS-232 and Codirectional modules Module status In normal operation, the LED is lit continuously. If the LED is not lit, the installed module does not match the module position configuration. Reconfigure the module position to match the type of module installed.
Page 254 24 — Visual indicators 24-8 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 255: Alarms
25 — Alarms 25.1 Alarms and alarm queues 25-2 25.2 Viewing alarm queues 25-4 25.3 Acknowledging alarms 25-6 25.4 Deleting alarms 25-7 25.5 Reclassifying configurable alarms 25-7 25.6 Logging alarms 25-9 25.7 External alarms 25-10 2902 MainStreet Technical Practices 25-1 May 2002 90-2906-01...
Page 256: Alarms And Alarm Queues
Table 25-1 lists and describes the alarm codes. Alarm codes marked with an asterisk (*) have a corresponding clearing code. Some alarm codes have subcodes and parameters that are used by Alcatel field service representatives. Subcodes and parameters that are useful to maintenance functions are given in the table.
Page 257 25 — Alarms Table 25-1 Detailed alarm descriptions Alarm code Description of alarm AIS - 8K* 8 kHz timing has been received by the Codirectional DCM. AIS - All Ones* An all ones pattern has been received by the Codirectional DCM. Board Self Test Failed This alarm is used only during the production and factory testing of the 2902 MainStreet unit.
Page 258: Viewing Alarm Queues
25 — Alarms Alarm code Description of alarm Revision/Feature Mismatch The Control card and software versions are mismatched, or a necessary Control card module is missing. Check the second parameter in the subcode to identify the details of the mismatch as follows: 0 - unknown reason 1 - the card and software are incompatible ROM Self Test Failed...
Page 259 25 — Alarms Each queue holds up to 64 alarms. If the number of alarms in the queue exceeds 64, a Too Many Alarms alarm occurs and additional alarms are not recorded in the queue until some or all of the alarms are deleted. The number of alarms in the queue is indicated in the header line.
Page 260: Acknowledging Alarms
Subcode and The alarm subcode and parameters, if any. Subcodes and parameters are used Parameters by Alcatel field service personnel only. However, some subcodes and parameters are relevant to maintenance operations, as detailed in Table 25-1. (2 of 2) Procedure 25-1 To view an alarm queue...
Page 261: Deleting Alarms
25 — Alarms Procedure 25-3 To acknowledge alarms ALARMS MAJ/PROMPT MINR/DEFER DIAG/INSTN ACK_ALL <alarm number> ↵ SK000528 where alarm number is the number (in the # column) of the alarm you want to acknowledge 25.4 Deleting alarms You can delete a specific alarm or all the alarms in a queue. Alarm queue numbers are updated when an alarm is deleted.
Page 262 25 — Alarms Figure 25-2 shows a display of alarm codes for configurable alarms and their current classification (listed under Priority). Use the numbers in the # column to identify the alarm code that you wish to reclassify. Press <Esc> before selecting CANCEL, QUIT, PAGE_UP or PAGE_DOWN. Figure 25-2 Reclassifying a configurable alarm 2902 MainStreet 82211-ab-cd...
Page 263: Logging Alarms
25 — Alarms 25.6 Logging alarms The 2902 MainStreet system offers three options for logging alarms: • remotely via CPSS (RMT_ON) • remotely via modem (MDM_ON) • locally to a device such as a printer (LCL_ON) All three options are disabled by default and can be enabled concurrently. When two or more options are enabled concurrently, logging priority is as follows: CPSS, then modem, then local printer.
Page 264: External Alarms
25 — Alarms Procedure 25-8 To log alarms locally Connect a printer to a serial port and configure the serial port type for PRINTER. Enter: ALARMS — MORE — LOGGING LCL_ON/LCL_OFF* SK000533 * Default 25.7 External alarms The external alarm function allows you to monitor or activate external alarm devices. It is disabled by default.
Page 265 25 — Alarms Procedure 25-9 To set the external alarm function ALARMS — EXTNL_ALRM ENABLE/DISABLE* OPEN_CCT/CLOSED_CCT* SK000534 * Default 2902 MainStreet Technical Practices 25-11 May 2002 90-2906-01...
Page 266 25 — Alarms 25-12 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 267: System Diagnostics
26 — System diagnostics 26.1 Diagnostic tests 26-2 26.2 Background diagnostics 26-3 26.3 Directed diagnostics 26-4 26.4 Viewing diagnostics 26-5 26.5 Busy-out circuits 26-6 26.6 Signaling leads 26-7 26.7 Displaying module and Control card maintenance information 26-10 26.8 Resetting a module or the Control card 26-10 2902 MainStreet Technical Practices 26-1...
Page 268: Diagnostic Tests
26 — System diagnostics 26.1 Diagnostic tests The 2902 MainStreet system can perform a number of diagnostic tests on the whole system and on specific circuits. The tests can be run automatically or when directed. If a test is unsuccessful, or if the time taken to complete a test exceeds the preset limit, a Device Failed alarm is recorded.
Page 269: Background Diagnostics
26 — System diagnostics While test 4 is applied to a Codirectional DCM circuit, 8 kHz timing is turned on and all ones is turned off. Even if the Codirectional DCM circuit has been configured not to generate 8 kHz timing (see section 20.5 in Configuration ), it does generate 8 kHz timing during the test.
Page 270: Directed Diagnostics
26 — System diagnostics Procedure 26-2 To set background diagnostics on a specific circuit CONFIG — CIRCUIT — <pp-c> or <Pp-c> ↵ — MORE ENAB_DIAG/DISAB_DIAG* SK000536 where pp is 1 or 9, and c is 1, 2, A or B p is 1 or 2, and c is 1 to 31 * Default 26.3...
Page 271: Viewing Diagnostics
26 — System diagnostics Procedure 26-4 To run directed diagnostics MAINT — DIAG — DIRECTED — <test number> ↵ X100 LOCK SK000537 where test number is 1, 2, 3 or 4 Note — If the diagnostic test is number 4, you must enter a circuit number (either <pp-c>...
Page 272: Busy-Out Circuits
26 — System diagnostics Figure 26-1 Diagnostics display 2902 MainStreet 82211-ab-cd Alarms:3 No Date 0:15R Diagnostic Test Number : 2 Test No. Function Program Integrity Ram Integrity N.V. Ram Integrity Digital Loopback Test MAINT DIAG 1-SHOW_CUR 2- SHOW_LIST 3-DISABLE 4-RESTART 5-DIRECTED 6-FAULT_LIST 8-CANCEL...
Page 273: Signaling Leads
26 — System diagnostics A circuit remains in the busy-out state until it is changed by the operator to the unbusy state or the system is restarted. Procedure 26-7 To busy-out a circuit MAINT — ON_CIRCUIT — <Pp-c> or <pp-c> ↵ BUSY_OUT/UNBUSY* SK000539 where...
Page 274 26 — System diagnostics Table 26-2 Incoming and outgoing signaling leads Incoming Outgoing Sync Force Unsync — — Viewing signaling leads Incoming and outgoing signaling leads, referred to as inputs and outputs respectively by the display, can be viewed. The data area is updated to show the status of the current incoming and outgoing signaling leads.
Page 275 26 — System diagnostics Figure 26-2 Signaling leads display for a DNIC module 2902 MainStreet 82211-ab-cd Alarms:18 No Date 0:12R Circuit Type Loopback Status Connection M01-A DNIC None Configured None Installed Type: 2603 Firmware ID : $14 Hardware ID : $2 Feature ID : $1 Status...
Page 276: Displaying Module And Control Card Maintenance Information
Displaying module and Control card maintenance information If you contact an Alcatel representative for technical advice about a module or card, you need to provide information from the MAINT — ON_MODULE display. A sample display is shown in Figure 26-3. When applicable, the display also identifies: •...
Page 277 26 — System diagnostics Procedure 26-11 To reset a module or the Control card MAINT — ON_MODULE — <pp> or <Pp> or <CTL> ↵ — RESET_POSN where pp is 1 or 9, and p is 1 or 2 2902 MainStreet Technical Practices 26-11 May 2002 90-2906-01...
Page 278 26 — System diagnostics 26-12 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 279: Loopbacks
27 — Loopbacks 27.1 Using loopbacks 27-2 27.2 2B1Q circuit loopbacks 27-3 27.3 DNIC circuit loopbacks 27-6 27.4 Data circuit loopbacks 27-11 27.5 Primary rate circuit loopbacks 27-13 27.6 Primary rate link loopbacks 27-15 2902 MainStreet Technical Practices 27-1 May 2002 90-2906-01...
Page 280: Using Loopbacks
27 — Loopbacks 27.1 Using loopbacks A loopback is a maintenance function used to isolate faults in equipment and transmission lines. A signal is sent out from a test point and looped back at some other point along the transmission path. The outgoing signal is compared to the returning signal using external test equipment.
Page 281: B1Q Circuit Loopbacks
27 — Loopbacks Figure 27-1 Loopback types Bidirectional loopback Unidirectional loopback Unidirectional loopback with pass-through 3622 For bidirectional loopbacks, the transmission path is interrupted and the signal is looped back to both ends of the connection. For unidirectional loopbacks, the transmission path is interrupted and the signal is looped back in one direction only.
Page 282 27 — Loopbacks For 2702 and 2703 MainStreet DTUs that support super-rate, super-rate circuit loopbacks can only be applied while the circuit is connected. If a loopback is applied to either port while neither is connected, the system displays the following error message: “Connect super-rate circuit before applying loopbacks.”...
Page 283 27 — Loopbacks Figure 27-3 Loopback B for 2700 MainStreet series DTUs 2902 MainStreet 2B1Q Control module card DRAGA 2B1Q Data line driver device DRAGA Loopback B 16581 Loopback E Figure 27-4 shows loopback E, which is a bidirectional loopback. The signal from the Control card is looped back within the DTU, in the DRAGA chip, at the end nearest the data device.
Page 284: Dnic Circuit Loopbacks
27 — Loopbacks Procedure 27-3 To set a 2B1Q circuit loopback MAINT ON_CIRCUIT UNDO_MAINT <pp-c> ↵ LOOPBACK_A LOOPBACK_B LOOPBACK_E UNDO_LPK SK000541 where pp is 1 or 9, and c is A or B 27.3 DNIC circuit loopbacks DNIC modules support remote connection of data devices through 2600 MainStreet series DTUs.
Page 285 27 — Loopbacks Figure 27-5 Loopback A for two-port DTUs 2902 MainStreet DNIC Control module card DNIC DRAGA line driver DNIC line driver Loopback A 8850 Loopback A for eight-port DTUs For eight-port DTUs, loopback A occurs on circuit A and circuit B simultaneously (see Figure 27-6).
Page 286 27 — Loopbacks Loopback B for two-port DTUs For two-port DTUs, loopback B is a bidirectional loopback that can be initiated on either Port A or Port B (see Figure 27-7). The signal from the Control card is looped back within the DTU in the DRAGA chip, on the side closest to the DNIC module. The signal from the data device is looped back in the DRAGA chip also, but on the inside of the DRAGA.
Page 287 27 — Loopbacks Figure 27-8 Loopback B for eight-port DTUs 2902 MainStreet DNIC Control 2606 module card MainStreet DNIC Data line driver devices DRAGA 1 to 8 DRAGA Loopback B 8962 Loopback C for two-port DTUs For two-port DTUs, loopback C is a bidirectional loopback. The signal from the Control card is looped back within the DTU inside the DRAGA chip (see Figure 27-9).
Page 288 27 — Loopbacks Loopback C for eight-port DTUs For eight-port DTUs, loopback C is a bidirectional loopback that can be initiated from either circuit A or B (see Figure 27-10). The signal from the Control card is looped back within the DTU inside the DRAGA chip. The signals from the data devices connected to the selected aggregate port are looped back on the side closest to the data devices.
Page 289: Data Circuit Loopbacks
27 — Loopbacks 27.4 Data circuit loopbacks The RS-232 DCM, Codirectional DCM, and subrate and super-rate circuits of the X.21 and V.35 DCMs support loopbacks B and C. Initiating a data circuit loopback may cause the data Caution — session on the selected circuit to be dropped. Loopback B for RS-232, X.21 and V.35 DCM circuits Loopback B for the RS-232, X.21 or V.35 DCM is a bidirectional loopback that extends from the DX and loops back in the gate array itself, as close as possible to...
Page 290 27 — Loopbacks Figure 27-12 Loopback B for the Codirectional DCM 2902 MainStreet Codirectional Control Data card interface Line interface Line interface Loopback B 8856 Loopback C for RS-232, X.21 and V.35 DCM circuits Loopback C for the RS-232, X.21 or V.35 DCM is a bidirectional loopback that extends from the DX and loops back in the gate array itself, as close as possible to the attached data device (see Figure 27-13).
Page 291: Primary Rate Circuit Loopbacks
27 — Loopbacks Loopback C Codirectional DCM circuits Loopback C for the Codirectional DCM is a bidirectional loopback that loops back at the DX (see Figure 27-14). Figure 27-14 Loopback C for the Codirectional DCM 2902 MainStreet Codirectional Control Data card interface Line...
Page 292 27 — Loopbacks Loopback A Loopback A can only be selected for one circuit in a link at a time. Figure 27-15 shows Loopback A for a primary rate circuit. When Loopback A is initiated, the circuit is looped back on the E1 framer and is passed through to the far end.
Page 293: Primary Rate Link Loopbacks
27 — Loopbacks Figure 27-16 Loopback C for primary rate circuits 2902 MainStreet Control card E1 G.703, E1 Framer HDSL or Optical LIM 9115 Procedure 27-6 To set a primary rate circuit loopback MAINT UNDO_MAINT ON_CIRCUIT <Pp-c> ↵ LOOPBACK_A LOOPBACK_C UNDO_LPK SK000544 where p is 1 or 2, and c is 1 to 31...
Page 294 27 — Loopbacks An equipment and a line loopback cannot be performed on a LIM at the same time. Primary rate loopback LEDs are provided on the Control card to indicate that a loopback is in progress. See section 24.3. It can take up to 60 seconds to establish an HDSL or optical Note —...
Page 295 27 — Loopbacks Figure 27-18 Equipment loopback for E1 HDSL LIMs 2902 MainStreet Control HDSL LIM card HDSL LIM2 Loop 1 interface HDSL pair 1 Loop 2 interface HDSL pair 2 11867 Line loopback The line loopback is unidirectional with pass-through. It can be initiated on both primary rate links at the same time.
Page 296 27 — Loopbacks Figure 27-19 Line loopback for E1 G.703 and E1 Optical LIMs 2902 MainStreet Primary rate Control interface card Primary rate line loopback 8863 E1 HDSL LIMs An E1 HDSL LIM loops the signal received from the HDSL line back to the network, and passes it through to the Control card (see Figure 27-20).
Page 297 27 — Loopbacks Procedure 27-7 To initiate a primary rate loopback MAINT — ON_MODULE — <Pp> ↵ — LOOPBACK EQUIPMENT LINE SK000546 where p is 1 or 2 Procedure 27-8 To remove a primary rate loopback MAINT — ON_MODULE — <Pp> ↵ — UNDO_LPK where p is 1 or 2 2902 MainStreet Technical Practices 27-19...
Page 298 27 — Loopbacks 27-20 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 299: Statistics
28 — Statistics 28.1 Synchronization statistics 28-2 28.2 FAS and CRC4 statistics 28-3 28.3 Codirectional DCM quality statistics 28-7 2902 MainStreet Technical Practices 28-1 May 2002 90-2906-01...
Page 300: Synchronization Statistics
28 — Statistics 28.1 Synchronization statistics Synchronization statistics report information about the synchronization sources in E1 or HDSL links, including the amount of time each synchronization source was in use and how many times it was switched. For more information on synchronization sources, see section 13.2 in Configuration .
Page 301: Fas And Crc4 Statistics
28 — Statistics Table 28-1 Synchronization statistics fields Item Description Current Interval The number of seconds the source has been in use during the current 15-minute interval; you can update the information by refreshing the screen (<Esc> <R>). Last Hour The number of seconds the source was in use for the last hour.
Page 302 28 — Statistics FAS statistics are similar to HDB3 statistics. HDB3 preserves the ones density of an electrical system by encoding strings of more than three zeros with bipolar violations. FAS statistics are used for link fault isolation. CRC4 statistics track CRC errors on E1 or HDSL links. CRC4 statistics are used for link fault isolation.
Page 303 28 — Statistics Figure 28-2 FAS statistics display 2902 MainStreet 82211-ab-cd Alarms:1 No Date 3:50P Link Quality Position: P1 Type: E1 FAS Status: Red Alarm Current Interval Accumulated Worst Interval (456 sec) (2:00P) Available Time: 7310 Local Out of Service Time: Remote Out of Service Time: Total Slip Count: Errored Seconds:...
Page 304 28 — Statistics Table 28-2 FAS and CRC4 statistics fields Item Description Link Quality, The heading in the data area indicates the type of statistics, the position number of Position, the primary rate link, and the type of primary rate link. The current status of the link Type and is also given.
Page 305: Codirectional Dcm Quality Statistics
28 — Statistics Procedure 28-7 To clear FAS or CRC4 statistics manually All statistics on the displayed screen, other than the error event count, can be cleared manually. STATS — QUALITY — <Pp> ↵ — CLR_STATS where p is 1 or 2 Procedure 28-8 To clear error event count manually The error event count is cleared without clearing any other FAS or CRC4 statistics.
Page 306 28 — Statistics Figure 28-3 Codirectional DCM quality statistics display 2902 MainStreet 82311-ab-cd Alarms:1 No Date 3:50P Link Quality: Position: M01 Type: 64K_CODIR Status: Module Present CIRCUIT 1 Slip Count: CIRCUIT 2 Slip Count: STATS QUALITY P1 1-CLR_STATS 8-CANCEL 9-QUIT Procedure 28-9 To display Codirectional DCM quality statistics STATS —...
Page 307: Cpss Maintenance
29 — CPSS maintenance 29.1 Routing information 29-2 29.2 CPSS grooming 29-5 2902 MainStreet Technical Practices 29-1 May 2002 90-2906-01...
Page 308: Routing Information
29.1 Routing information When a 2902 MainStreet system is part of a network of Alcatel proprietary products capable of sending CPSS messages, it constructs a routing table that contains information about the nodes in the network. The 2902 MainStreet system knows which nodes it can send CPSS messages to, how many hops separate it from those nodes, and which route it should use to send the messages.
Page 309 29 — CPSS maintenance If the table contains no entries meeting these criteria, the display shows a message to this effect on the diagnostics line. There may be more routing information than can be displayed on a single screen. To view information for additional nodes, enter a higher or lower node number.
Page 310 29 — CPSS maintenance Figure 29-3 Node information display 2902 MainStreet 82211-ab-cd Alarms:1 No Date 0:00R Node: 39 Clock Source: Free Run Clock Cl: 15 Nodes in Network: 7 Node Hops Cl Circuit Node Hops Cl Circuit Node Hops Cl Circuit P1-01 P1-P1...
Page 311: Cpss Grooming
29.2 CPSS grooming In a network made up of Alcatel proprietary equipment, only one channel per pair of adjacent nodes needs to be dedicated to CPSS messages. However, if Alcatel proprietary equipment is connected to a network made up of third-party equipment, the ability to dynamically cross-connect more than one CPSS channel to a single CPSS carrier is advantageous.
Page 312 29 — CPSS maintenance Figure 29-4 CPSS grooming application 3600 MainStreet node #1 3600 MainStreet node #2 Many DS0s configured for CPSS Network equipment Dedicated 2902 MainStreet E1 link node #1 3600 MainStreet node #3 Single DS0s configured for CPSS 3600 MainStreet node #4 3600 MainStreet...
Page 313: Database Management
30 — Database management 30.1 Backing up, verifying, and restoring the configuration database 30-2 30.2 Viewing and resetting the nonvolatile memory 30-5 2902 MainStreet Technical Practices 30-1 May 2002 90-2906-01...
Page 314: Backing Up, Verifying, And Restoring The Configuration Database
30 — Database management 30.1 Backing up, verifying, and restoring the configuration database The 2902 MainStreet system stores its configuration database in NVM on the Control card. You can back up, verify a backup, and restore the database using the NMTI, Craft Interface Node Manager or a computer running the 5620 NM software.
Page 315 30 — Database management Restoring the database It may be necessary to restore the database when: • the system configuration file has been damaged • new software has been loaded and the system must be reconfigured • the Control card has been replaced You can restore a backup configuration file from a PC or 5620 NM connected directly to the 2902 MainStreet system.
Page 316 30 — Database management Set up the serial port parameters. HOUSE SER_PORT_1 SER_PORT_2 BAUD_RATE FLOW_CTRL PORT_TYPE NONE* XON/XOFF 1200*** 2400 4800 9600** VT100** CPSS PRINTER CPSS_MODEM*** SK000550 * Default for both ports ** Default for serial port 1 *** Default for serial port 2 For baud rates of 2400, 4800 and 9600 b/s, the flow control must be set to XON/XOFF or DTR.
Page 317: Viewing And Resetting The Nonvolatile Memory
30 — Database management Enter: MAINT –– MORE BACKUP RESTORE VERIFY <filename> ↵ <filename> ↵ PROCEED <description> ↵ SK000551 where filename is a name having up to eight characters (no spaces) description is a text string of up to 49 characters Filename and description do not apply to VT100 terminal management.
Page 318 30 — Database management Figure 30-1 NVM information display 2902 MainStreet 82211-ab-cd Alarms:5 No Date 7:23R Block Size Allocated Blocks Free Blocks Bad Blocks Total Blocks MAINT NVM_DATA 8- CANCEL 9_QUIT Procedure 30-2 To view the NVM MAINT — MORE — NVM_DATA If bad blocks exist, but no repair information is listed, the bad blocks occurred in unused space.
Page 319: Hardware Maintenance Procedures
31 — Hardware maintenance procedures 31.1 Measuring the power rails 31-2 31.2 Testing and replacing the fuse 31-3 2902 MainStreet Technical Practices 31-1 May 2002 90-2906-01...
Page 320: Measuring The Power Rails
31 — Hardware maintenance procedures 31.1 Measuring the power rails Test points for measuring power rail voltages are available at connectors A and B of either interface module position. Use a voltmeter to make measurements between ground (GND) and the desired test point. Figure 31-1 locates the connectors and Figure 31-2 identifies the pins.
Page 321: Testing And Replacing The Fuse
31 — Hardware maintenance procedures Figure 31-2 Power rail test points Connector B 21 - Ground Ground - 2 Connector A 8961 Table 31-1 Power rail test points Pin number Voltage Tolerance Connector A +5 V dc ±5% Connector B +15 V dc ±5% –15 V dc...
Page 322 31 — Hardware maintenance procedures Procedure 31-1 To remove and check the fuse Turn off the power switch. Disconnect the power cord by unplugging it from the ac source, and then from the unit. With a small blade screwdriver, pry the fuse holder away from the power connection module and pull the fuse holder out (see Figure 31-3).
Page 323: Primary Rate Link Bypass
32 — Primary rate link bypass 32.1 Initiating a primary rate link bypass 32-2 2902 MainStreet Technical Practices 32-1 May 2002 90-2906-01...
Page 324: Initiating A Primary Rate Link Bypass
32 — Primary rate link bypass 32.1 Initiating a primary rate link bypass Primary rate bypass is supported by E1 G.703 LIMs only. You can initiate a link bypass for maintenance purposes. The bypass operation must be configured or removed for each primary rate link. Initiation of a bypass operation breaks all data circuit Caution —...
Page 325 Glossary 2B1Q two binary, one quaternary An ISDN line encoding technique that uses two bits to represent four variations in amplitude and polarity. alarm indication signal A code sent downstream in a digital network to indicate a traffic related defect has been detected. analog loopback A method of testing modems and data terminals by disconnecting the device from the telephone line and looping a signal out through the device’s...
Page 326 Glossary bits per second C signal control signal channel associated signaling A type of E1 link where 4 bits of signaling per timeslot are multiplexed into timeslot 16. central battery working common channel signaling A type of E1 link where timeslot 16 is used for message-oriented signaling. CEPT Conférence des administrations Européennes des Postes et Télécommunications (European Conference of Postal and...
Page 327 Glossary digital service, level 0 DS0 is a worldwide standard for PCM digitized voice. It operates at 64 kb/s. digital subscriber line digital signal processor A microprocessor which is optimized for signal processing applications. data set ready A V.24 control signal. data service unit or digital service unit A unit which provides the functionality of the CSU and in addition, provides timing recovery and interfaces to the DTE of the customer.
Page 328 Glossary high capacity multiplexing HCM is a proprietary rate adaption and SRM scheme that provides bandwidth granularity of 800 b/s, allowing 98% bandwidth utilization on aggregate links. HDB3 high-density bipolar 3 Method of preserving one’s density of an electrical signal by encoding strings of more than three zeroes with bipolar violations.
Page 329 Glossary LAPB link access procedure balanced LAPB is the most common data link control protocol used to interface X.25 DTEs. It is a full-duplex, point-to-point bit-synchronous protocol used in packet-switched networks. LAPD link access protocol for D channel A link access procedure for the D channel. Similar to LAPB, the main difference is the addition of more addressing information.
Page 330 Glossary pulse code modulation PROM programmable read-only memory A programmable semiconductor memory device in which the contents cannot be modified. PSTN public switched telephone network PSTN is the worldwide voice telephone system. R2D signaling R2 digital signaling random access memory The primary memory in a computer, RAM can be repeatedly read and overwritten.
Page 331 Glossary systems network architecture SNA is IBM’s proprietary network architecture. It also refers to a class of networking protocols defined by IBM. subrate multiplexer A device which allows data and compressed voice to be multiplexed together and put on a single DS0. system synchronization unit The circuit which generates the system clocks (C4M, FP, C3M) from whatever master-clock source is selected.
Page 332 Glossary GL-8 2902 MainStreet Technical Practices 90-2906-01 May 2002...
Page 333 Index Numerics 2600 MainStreet series DTUs, 17-2 AC, powering up, 4-4 2700 MainStreet series DTUs, 17-2 access levels 2902 MainStreet description, 11-9 opening the unit, 5-2 examples, 11-10 physical components, 1-3 level 0, 11-9 product overview, 1-2 level 5, 11-9 2B1Q module levels 4 through 1, 11-9 circuit configuration, 17-2...
Page 334 Index alarms RS-232 DCM, 18-7 acknowledging, 25-6 V.35 DCM, 19-9 and alarm queues, 25-2 X.21 DCM, 19-9 and fault classes, 15-12 clocks (for system timing), 13-2 deleting, 25-7 Codirectional DCM external alarm function, 25-10 8 kHz timing, 20-4 logging, 25-9 alarm times, 20-3 reclassifying, 25-7 all ones AIS, 20-4...
Page 335 Index to install data position E1 G.703 or HDSL LIM and jumper HCM rate adaption, 22-8 blocks, 5-3 to configure E1 Optical LIM, 5-6 HCM rate adaption, 22-9 interface modules, 5-10 data structure personality modules, 5-11 2B1Q, 17-7 to remove DNIC, 17-7 E1 G.703 or HDSL LIM, 5-5 RS-232 DCM, 18-6...
Page 336 Index device mode, 17-3 CAS, 15-4 duplex method, 17-5 CCS, 15-4 loopbacks, 27-6 E1 G.703 LIM, 1-5, 15-2 multidrop data bridge, 17-12 E1 HDSL LIMs, 1-5, 15-2 RTS/CTS delay, 17-5 E1 Optical LIM, 1-5, 15-2 signalling leads, 26-7 fault classes, 15-12 super-rate configuration, 17-13 network connectors, 15-3 to configure...
Page 337 Index fault signalling and protection switching, 23-6 E1 circuit, 16-2 installation format desktop unit in slide assembly in a rack, 3-3 E1 framing grounding requirements, 1-11 CAS, 15-4 power requirements, 1-10 CCS, 15-4 site selection, 1-9 frame fault class, 15-12 space requirements, 1-10 framing format tool and hardware requirements, 1-11...
Page 338 Index master/slave operation, 15-6 HDSL and Optical LIMs, 15-6 keyboard buffer, 10-9 Modem pin and signal assignment, 8-2 module circuits naming, 12-8 LEDs module positions colours, 24-2 configuring, 12-3 Control card (rear panel), 24-4 empty, 12-4 front panel, 24-2 logical, 12-2 interface modules, 24-6 naming, 12-8 locations, 24-2...
Page 339 Index node parameters RS-232 adapters, 7-10 access levels, 11-9 V.35 connections baud rate, 11-4 DB25-to-M34 cables, 7-20 CPSS node identifier, 11-7 power connections, 4-4 date, 11-6 power LED, 24-2 device type, 11-2 power rails flow control, 11-5 measuring, 31-2 NOC telephone number, 11-8 power requirements, 1-10 node name, 11-7 power supply (description), 1-4...
Page 340 Index transparent adaption, 21-3 transparent transport bandwidth, 21-5 transparent transport position, 21-6 securing strap transparent to install, 5-10 description, 21-2 self-tests (startup), 4-6 transport bandwidth, 21-3 serial ports transport position, 21-5 baud rate, 11-4 rear panel description, 11-2 LEDs, 24-4 device type, 11-2 receive clock flow control, 11-5...
Page 341 Index RS-232 DCM, 18-7 V.35 DCM, 19-10 V.35 DCM, 19-9 X.21 DCM, 19-10 X.21 DCM, 19-9 transmit shielding super-rate configuration E1 G.703 LIM, 15-4 2B1Q, 17-13 transparent rate adaption DNIC, 17-13 description, 21-2 V.35 DCM, 19-13 to configure, 21-3 X.21 DCM, 19-13 to configure transport bandwidth, 21-5, super-rate cross-connection 21-6...
Page 342 Index device gender, 19-4, 19-5, 19-6, 19-7 device mode, 19-4 loopbacks, 27-11 X.21 DCM multidrop data bridge, 19-12 circuit identifier, 12-2 super-rate configuration, 19-13 circuit operating parameters, 19-2 to configure clocking, 19-9 clocking, 19-11 data structure, 19-8 control signals, 19-8 description, 19-2 data structure, 19-9 device gender, 19-4, 19-5, 19-6, 19-7...

Alcatel MainStreet 2902 Manual

Mandatory Regulations

Introduction

Unpacking and Inspecting the Shipment

Mounting the Unit

Ground and Power Connections

Installing and Removing Modules

Connecting to the Network

Connecting to Data Devices

Connecting Node Management Equipment

Connecting to External Alarm Equipment

Node Management

Node Parameters

Module Position and Circuit Configuration

System Timing and Timing Sources

Cpss

E1 Module Operating Parameters

E1 Circuit Operating Parameters

DNIC and 2B1Q Modules

Alarms

Loopbacks

Statistics

Quick Links

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Summary of Contents for Alcatel MainStreet 2902