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Paradyne 3172 Operator's Manual

Zhone acculink 3172 dsu-csu combo: operators guide
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ACCULINK
3172 AND 3174 E1 DSU/CSU
OPERATOR'S GUIDE
Document No. 3170-A2-GB20-30
March 1999

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  • Page 1 ACCULINK 3172 AND 3174 E1 DSU/CSU OPERATOR’S GUIDE Document No. 3170-A2-GB20-30 March 1999...
  • Page 2 ACCULINK 3172 and 3174 E1 DSU/CSU ACCULINK 3172 and 3174 E1 DSU/CSU Operator’s Guide 3170-A2-GB20-30 4th Edition (March 1999) Changes and enhancements to the product and to the information herein will be documented and issued as a new release. Warranty, Sales, Service, and Training Information Contact your local sales representative, service representative, or distributor directly for any help needed.
  • Page 3 Important Safety Instructions Read and follow all warning notices and instructions marked on the product or included in the manual. When an ac power source is used, this product is intended to be used with a 3-wire grounding type plug – a plug which has a grounding pin. This is a safety feature. Equipment grounding is vital to ensure safe operation.
  • Page 4 ACCULINK 3172 and 3174 E1 DSU/CSU In addition, if the equipment is to be used with telecommunications circuits, take the following precautions: – Never install telephone wiring during a lightning storm. – Never install telephone jacks in wet locations unless the jack is specifically designed for wet locations.
  • Page 5 CE Marking Models 3172-A1-410 and 3174-A1-410 Only Models 3172-A1-410 and 3174-A1-410 of this product are marked with the CE mark. This mark has been affixed to demonstrate full compliance with the following European Directives: Directive 73/23/EEC – Council Directive of 19 February 1973 on the harmonization of the laws of the member states relating to electrical equipment designed for use within certain voltage limits, as amended by Directive 93/68/EEC.
  • Page 6 ACCULINK 3172 and 3174 E1 DSU/CSU March 1999 3170-A2-GB20-30...

  • Page 7: Table Of Contents

    Table of Contents Preface Introduction Installation Operation 3170-A2-GB20-30 Objectives and Reader Assumptions ......Related Documents .
  • Page 8 ACCULINK 3172 and 3174 E1 DSU/CSU Maintenance Appendices Glossary Index Overview ..........

  • Page 9: Preface

    Objectives and Reader Assumptions This operator’s guide contains installation, operation, and maintenance information for the ACCULINK 3172 and 3174 E1 Data Service Unit (DSU)/Channel Service Unit (CSU). It is assumed that you are familiar with the operation of digital data communication equipment and DSUs and CSUs in particular.

  • Page 10: Related Documents

    ACCULINK 3172 and 3174 E1 DSU/CSU Related Document 7800-A2-GB20 ACCULINK 3100 Series Open Management Application for HP OpenView User’s Guide Contact your sales or service representative to order additional product documentation. Paradyne documents are also available on the World Wide Web at www.paradyne.com. Select Library Technical Manuals.

  • Page 11: Introduction

    E1 network applications. The E1 DSU/CSU series of products consists of a Model 3172 DSU/CSU (2-port) and a Model 3174 DSU/CSU (4-port). Differences between these models are discussed where applicable throughout this guide.
  • Page 12 ACCULINK 3172 and 3174 E1 DSU/CSU DTE Drop/Insert Interface The DTE Drop/Insert interface is compatible with the signal format of ITU-T Recommendation G.703 and the frame structure of ITU-T Recommendation G.704. This interface allows DTEs/PBXs to share the E1 network with other high-speed equipment.

  • Page 13: Physical Description

    Physical Description The E1 DSU/CSU series of products consists of a Model 3172 DSU/CSU (2-port) and a Model 3174 DSU/CSU (4-port). Front Panel The E1 DSU/CSU front panel (Figure 1-1) contains, One 2-line, 16-alphanumeric-character-per-line liquid crystal display (LCD) One 7-button keypad (three Function and four...
  • Page 14 ACCULINK 3172 and 3174 E1 DSU/CSU POWER PORT CAUTION: AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR E1 NETWORK CLOCK IN POWER PORT CAUTION: AUX PORT OR COM PORT MUST NOT BE CONNECTED TO PSTN OR E1 NETWORK...
  • Page 15 Name POWER AUX PORT COM PORT NETWORK—120 NETWORK—75 TX/RX NETWORK—120 /75 (switch) NETWORK—RX SHIELD (switch) CLOCK IN PORTs 1– 4 3170-A2-GB20-30 Table 1-1 Rear Panel Connectors and Switches Function Supplies power to the E1 DSU/CSU by providing an attachment for the ac power module or the optional dc power cable (+24 or –...
  • Page 16 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. March 1999 3170-A2-GB20-30...

  • Page 17: Installation

    Overview ................Application Examples .
  • Page 18 ACCULINK 3172 and 3174 E1 DSU/CSU ROUTER Figure 2-2. Shared Access Application Example DSU/CSU ROUTER DSU/CSU ROUTER Figure 2-3. Fractional E1 Application Example WIRELESS DSU/CSU CELL SITE WIRELESS DSU/CSU CELL SITE Figure 2-4. Wireless/DACS Application Example NETWORK SERVICES DSU/CSU FRACTIONAL...

  • Page 19: Snmp Connection Examples

    SNMP Connection Examples The E1 DSU/CSU can be connected to an SNMP management system in a number of ways. Some examples include: Directly connecting the COM port to the SNMP manager (Figure 2-5). Connecting the COM port to a network device (e.g., a router) for SNMP management (Figure 2-6).
  • Page 20 ACCULINK 3172 and 3174 E1 DSU/CSU SNMP Figure 2-7. Connection through a LAN Adapter to SNMP SNMP ETHERNET Figure 2-8. LAN Adapter and Daisy Chaining for SNMP Support DSU/CSU NETWORK SNMP FDL/EDL Figure 2-9. Remote SNMP Management through FDL /EDL...

  • Page 21: Important Instructions

    Important Instructions Read and follow all warning notices and instructions marked on the E1 DSU/CSU or included in this guide. CAUTION Disconnect the power cable before connecting or removing any data cables at the rear of the unit. HANDLING PRECAUTIONS STATIC-SENSITIVE DEVICES This product is designed to protect sensitive components from damage...
  • Page 22 ACCULINK 3172 and 3174 E1 DSU/CSU Installing the Single –48 Vdc Power Supply To install the E1 DSU/CSU using a single source – 48 Vdc power supply, refer to Figure 2-11 and use the following procedure. To install the – 48 Vdc single source power supply: "...
  • Page 23 Installing the Redundant –48 Vdc Power Supply To install the E1 DSU/CSU using a redundant – 48 Vdc power supply, refer to Figure 2-12 and use the following procedure. To install the redundant – 48 Vdc power supply: " Procedure 1.

  • Page 24: Cabling Examples

    ACCULINK 3172 and 3174 E1 DSU/CSU Cabling Examples The E1 DSU/CSU is supplied with an ac power module. You must provide the DTE and network cables. Optional cables that you can order from the company are described in Appendix D, Assignments.

  • Page 25: Power-Up Self-Test

    Power-Up Self-Test After you connect the E1 DSU/CSU to a power source, the unit performs the power-up self-test to ensure that it is in good working order. The E1 DSU/CSU performs this test on itself upon power-up or after a device reset unless it has been disabled by the Self-Test configuration option (see Appendix C, Configuration...
  • Page 26 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. 2-10 March 1999 3170-A2-GB20-30...

  • Page 27: Operation

    Overview ................Using the Front Panel .

  • Page 28: Overview

    ACCULINK 3172 and 3174 E1 DSU/CSU Overview This chapter contains information for operating your E1 DSU/CSU. It includes a description of the front panel and sample procedures for configuring the E1 DSU/CSU. ACCULINK EQPT TEST JACKS Using the Front Panel The E1 DSU/CSU front panel (Figure 3-1) consists of an LCD, a keypad, test jacks, and 12 LEDs.

  • Page 29: Lcd

    The LCD (Figure 3-2) displays two types of data: Messages such as alarms, command/test completion, and action in progress Front panel menu tree information (see Appendix A, Front Panel Menu) Figure 3-2. LCD The LCD displays status messages as requested via the Device Health and Status branch of the front panel menu (see the Device Health and Status...

  • Page 30: Test Jacks

    ACCULINK 3172 and 3174 E1 DSU/CSU The scroll keys ( ) serve one of two functions, depending on whether a menu screen or a data entry screen appears on the front panel. For data entry screens, the key scrolls one...
  • Page 31 Name Color Green Indicates the current operational state of the E1 DSU/CSU. FAIL Yellow Indicates a system failure or a self-test. TEST Yellow A system test is in progress. Name Color Green Monitors the signal being received from the network. Yellow Monitors Out Of Frame (OOF) conditions on the received network signal.
  • Page 32 ACCULINK 3172 and 3174 E1 DSU/CSU Name Color Green Monitors the signal being received from the DTE Drop/Insert port. Yellow Monitors Out Of Frame (OOF) conditions on the received DTE Drop/Insert signal. ALRM Yellow Indicates whether an alarm condition exists on the received DTE Drop/Insert signal.
  • Page 33 Name Color Green Monitors the state of interchange circuit CD (ITU-T 108/1, /2) – Data Terminal Ready received from the synchronous data DTE. Yellow Monitors activity on interchange circuit BA (ITU-T 103) – Transmitted Data. This is the data sent from the synchronous data DTE to the data port on the E1 DSU/CSU. Yellow Monitors activity on interchange circuit BB (ITU-T 104) –...

  • Page 34: Displaying Unit Identity

    ACCULINK 3172 and 3174 E1 DSU/CSU Displaying Unit Identity The identity of the E1 DSU/CSU (serial number, model number, software revision level, hardware revision level, and customer identification) is available through the Status branch of the front panel menu (see Appendix A, Front Panel Menu).
  • Page 35 To change the customer identification (CID): " Procedure 1. Press the key on the top-level menu to bring the Ctrl branch onto the front panel LCD. DSU E1 CEPT Stat Test 2. Press F3 to select Ctrl from the top-level menu screen.

  • Page 36: Displaying Led Conditions

    ACCULINK 3172 and 3174 E1 DSU/CSU Displaying LED Conditions The same conditions monitored by the front panel LEDs can also be monitored by the LED command. This command is most useful when the E1 DSU/CSU is being accessed remotely (see Appendix G, Front Panel Emulation).

  • Page 37: Selecting The Dte Drop/Insert Or Data Port For Led Display

    E1 DSU/CSU; invalid combinations of configuration options do not appear. For example, menus displayed for the Model 3172 (2 ports) and the Model 3174 (4 ports) differ due to the number of ports available. Also, if the DTE Drop/Insert interface...

  • Page 38: Displaying/Editing Configuration Options

    ACCULINK 3172 and 3174 E1 DSU/CSU The configuration options are divided into functional groups. Appendix C contains a list of the configuration options and defaults. These groups are: DTE (Drop/Insert) Interface (Table Port (Table C-2) Network Interface (Table C-3) Channel...

  • Page 39: Saving Edit Changes

    Saving Edit Changes Save edit changes to the Active area when you want those changes to take effect immediately. Save edit changes to the Customer area when you want to overwrite the existing Customer configuration options and store these changes for future use. NOTE If you attempt to exit the Edit function after making changes...

  • Page 40: Configuring The E1 Dsu/Csu For Snmp Management

    ACCULINK 3172 and 3174 E1 DSU/CSU 7. Select the port from which you want to copy the configuration options using the corresponding Function key. Copy From: Prt1 Prt2 8. Select the port to which you want to copy the configuration options using the corresponding Function key.

  • Page 41: Setting The Ip Address

    7. Press F2 to configure the COM port as the management link to an external SNMP manager. Com Use: Next SNMP ASCII Setting the IP Address The IP address is the address used by the SNMP manager to access the device. For devices using PPP, the IP address can be negotiated if the network device (e.g., router or SNMP manager) supports such negotiation.

  • Page 42: Selecting The Link Layer Protocol

    ACCULINK 3172 and 3174 E1 DSU/CSU 10. When you are through changing the IP address, you must press F3 (Save) to save the value. Otherwise, the original value will be retained. 010.155.111.222 Down Selecting the Link Layer Protocol Two link layer protocols, Point-to-Point Protocol (PPP)

  • Page 43: Specifying The Community Name(S) And Access Type(S)

    Specifying the Community Name(s) and Access Type(s) You have the capability of specifying up to two community names (community name 1 and community name 2) to be used by external SNMP managers when trying to access objects in the E1 DSU/CSU’s MIB. Once you specify the community name(s), you must then specify the type of access to the MIB that SNMP managers in the community are permitted to have.

  • Page 44: Configuring Snmp Traps

    ACCULINK 3172 and 3174 E1 DSU/CSU 11. Press F1 (Next) until the Access 1 configuration option appears. CommunityName1: Next Edit 12. Press F2 (Read) or F3 (R/W). Access 1: Next Read The Read selection allows read-only access (SNMP “Get”) to the accessible objects in the MIB when community name 1 is used.

  • Page 45: Selecting The Number Of Trap Managers

    Selecting the Number of Trap Managers If you intend to issue traps to an SNMP manager(s) from this device, you must specify the number of SNMP managers that are to receive the traps. To specify the number of SNMP managers to receive traps from this device: "...

  • Page 46: Configuring Ds0 Channels

    ACCULINK 3172 and 3174 E1 DSU/CSU Configuring DS0 Channels The E1 DSU/CSU provides channel configuration options that allow you to do the following: Display the DS0 assignments for the Network, DTE Drop/Insert, and data port interfaces. Allocate DS0 channels on the DTE Drop/Insert interface to the Network interface.
  • Page 47 NETWORK INTERFACE Figure 3-6. Example of Channel Allocation with TS16 Reserved for Signaling 3170-A2-GB20-30 DROP/INSERT INTERFACE (N1-D1, N2-D2, ETC.) AUTOMATIC ALLOCATION PORTS March 1999 Operation PRT 1 PRT 2 PRT 3 PRT 4 496-14899 3-21...
  • Page 48 ACCULINK 3172 and 3174 E1 DSU/CSU Network E1 Interface Network Channel Prt1 Prt1 Prt3 Prt2 Prt2 Prt2 Prt2 Prt2 Prt2 Prt3 Allocations D1 – D31 indicates allocation to DTE Drop/Insert channels. Prt1 – Prt4 indicates allocation to synchronous data ports.
  • Page 49 NETWORK INTERFACE Figure 3-8. Example of Channel Allocation with TS16 Available for Data 3170-A2-GB20-30 DROP/INSERT INTERFACE PORTS PRT 1 PRT 2 PRT 3 PRT 4 496-14898 March 1999 Operation 3-23...
  • Page 50 ACCULINK 3172 and 3174 E1 DSU/CSU Network E1 Interface Network Channel Prt1 Prt1 Prt1 Prt3 Prt2 Prt2 Prt2 Prt2 Prt2 Prt2 Prt3 Allocations D1 – D31 indicates allocation to DTE Drop/Insert channels. Prt1 – Prt4 indicates allocation to synchronous data ports.
  • Page 51 Port Chan Options Conf Assign To Assign By If Assign By Block Port 1 If Assign By Chan Assign To Assign By If Assign By Block Port 2 If Assign By Chan Figure 3-10. Port Channel Configuration Worksheet (Ports 1 and 2) 3170-A2-GB20-30 NET, DTE, Prt2, Prt3, Prt4 Block, Chan...
  • Page 52 ACCULINK 3172 and 3174 E1 DSU/CSU Port Chan Options Conf Assign To Assign By If Assign By Block Port 3 If Assign By Chan Assign To Assign By If Assign By Block Port 4 If Assign By Chan Figure 3-11. Port Channel Configuration Worksheet (Ports 3 and 4)

  • Page 53: Displaying Ds0 Channel Assignments

    Displaying DS0 Channel Assignments Use the Display command (in the Channel Configuration branch) to view how the DS0 channels are currently allocated. Line 1 of the display shows the 31 channels of the selected interface. Pressing three channels onto the LCD. Line 2 displays what is allocated to the DS0 channel listed in Line 1.
  • Page 54 DS0 channel shown in Line 1. – Allocating Data Ports Assign a specific port (Prt1 and Prt2 for Model 3172, Prt1 through Prt4 for Model 3174) to DS0 channels on either the Network interface or the DTE Drop/Insert interface by using the configuration options.
  • Page 55 7. Select the desired port by pressing its corresponding Function key. Channel Config: Prt1 Prt2 8. The configuration option for the data port channel allocation destination appears on the screen. Select NET to assign this port to the Network E1 interface, select DTE to assign this port to the DTE Drop/Insert interface, or press the and the appropriate Function key to assign this...

  • Page 56: Individual Channel Assignment Method

    ACCULINK 3172 and 3174 E1 DSU/CSU Individual Channel Assignment Method The Assign By configuration option screen appears after you select a port. To assign by the individual channel method: " Procedure 1. Press F3 (Chan). Assign By: Next Block 2. Press F1 (Next) to display the next configuration option (channel allocation).
  • Page 57 7. From the DTE Channels screen, press F1 to select TS16. DTE Channels: TS16 Assign 8. Rsvd (Reserved) is the default for TS16. This indicates that time-slot 16 is reserved for signaling information. Pressing F1 (Data) makes time-slot 16 available for data. TS16:Rsvd Data Rsvd...

  • Page 58: Providing Backup Capability

    ACCULINK 3172 and 3174 E1 DSU/CSU Clearing DS0 Channel Allocation You can clear (deallocate) all the DS0 channels currently allocated to either the Network E1 interface, the DTE Drop/Insert interface, or the synchronous data ports. To clear DS0 channel allocation: "...

  • Page 59: Selecting The Timing Source

    Selecting the Timing Source The E1 DSU/CSU provides the ability to select a primary clock (timing) source that is used to synchronize all of the E1 and data port interfaces on the E1 DSU/CSU. The clock for each interface is at the appropriate rate for that interface (e.g., 2.048 Mbps for the E1 interfaces, the configured port rate for the data ports) and is independent of the primary clock rate.

  • Page 60: Configuring For Network Timing

    ACCULINK 3172 and 3174 E1 DSU/CSU Configuring for Network Timing To configure for network timing: " Procedure 1. Press F3 to select Cnfig from the top-level menu screen. 2. Select the configuration option set to be copied into the Edit area by using the appropriate Function key.

  • Page 61: Acquiring/Releasing The User Interface

    8. Select the appropriate external clock rate by pressing the corresponding Function key. This step is mandatory if you have chosen external clocking. Clock Rate:2048 Next 2048 Acquiring/Releasing the User Interface You can access the user interface from either the front panel or the COM port.

  • Page 62: Resetting The E1 Dsu/Csu

    ACCULINK 3172 and 3174 E1 DSU/CSU 3. From the Control screen, select Rel (Release). Control: ClrReg The active user interface is released. A screen with this message appears. No user interface is active until input is received from a user interface.

  • Page 63: E1 Dsu/Csu User Interface Access Security

    E1 DSU/CSU User Interface Access Security NOTE This page of the manual is self- supporting and can be removed to prevent unwanted knowledge of the security access levels and their selection. The user interface access security option allows you to limit access to the E1 DSU/CSU to display-only and non-intrusive functions.
  • Page 64 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. 3-38 March 1999 3170-A2-GB20-30...

  • Page 65: Maintenance

    Overview ................Self-Test Health .

  • Page 66: Overview

    ACCULINK 3172 and 3174 E1 DSU/CSU Overview The E1 DSU/CSU can detect and report faults, and perform diagnostic tests. These features ensure that your E1 DSU/CSU is giving you optimum performance in your network. Self-Test Health Use the Self-Test Health command to display the results of the power-up self-test.

  • Page 67: Device Health And Status

    Device Health and Status Use the Device Health and Status branch to view current health and status of the E1 DSU/CSU. When you access this branch, one or more status messages appear in priority order (highest to lowest) on Line 2 of the LCD. On the front panel, use the scroll keys to view any additional messages.
  • Page 68 The error rate of the received signal has exceeded the configured threshold for data port Prt n (where n is the port number: 1–2 for the 3172, or 1– 4 for the 3174). This condition only occurs if the synchronous data port’s Embedded Data Link (EDL) is enabled. The condition is cleared when the error rate falls below the synchronous data port’s configured threshold value.

  • Page 69: Network Performance Reports

    Network Performance Reports Network performance is continuously monitored and maintained in network aggregate registers (NET) and, if configured for EDL, in far-end and near-end port registers. Network aggregate registers (NET) are status registers that collect performance data for the previous 24-hour period.
  • Page 70 ACCULINK 3172 and 3174 E1 DSU/CSU 7. When you press F3 from the NET Registers screen, the interval screen appears. Use this screen to choose the specific 15-minute interval. NET Intvl: 01 Down 8. Use the keys to position the cursor...
  • Page 71 Register Interval Description Event Error events counter. An error event is a frame with either a Cyclic Redundancy Check (CRC) error or an Out Of Frame (OOF) event. The maximum count is 65,535. This register is only reset as a result of a Clear Performance Register command.
  • Page 72 ACCULINK 3172 and 3174 E1 DSU/CSU Register Interval Description LOFC The loss of frame count for the current interval. This is a count of the number of times that an LOF is declared. An LOF is declared when a continuous out of frame condition persists for more than 2.5 seconds.

  • Page 73: Alarms

    DTE). Continuous Out Of Frame condition detected at synchronous data port n (where n is the port number: 1–2 for Model 3172 DSU/CSUs, or 1–4 for Model 3174 DSU/CSUs). Alarm Cleared. Out Of Frame condition at synchronous data port n (where n is the port number: 1–2 for Model 3172 DSU/CSUs, or...

  • Page 74: Snmp Traps

    ACCULINK 3172 and 3174 E1 DSU/CSU SNMP Traps A trap is an unsolicited message that is sent from the E1 DSU/CSU to an SNMP manager when the device detects certain, pre-specified conditions. These traps enable the SNMP manager to monitor the state of the network.

  • Page 75: Troubleshooting

    Troubleshooting The E1 DSU/CSU is designed to provide you with many years of trouble-free service. However, Table 4-6 gives you some direction if a problem occurs. For Symptom Possible Cause No power 1. The power cord is not securely plugged into the wall receptacle or rear panel connector.
  • Page 76 ACCULINK 3172 and 3174 E1 DSU/CSU Symptom Possible Cause Message DTE is sending an AIS. AIS at DTE appears Message EER at E1 facility problem. Net appears BPV LED is ON 1. Incompatible line coding format between the DTE and the E1 DSU/CSU.

  • Page 77: Test Jacks

    Test Jacks Six test jacks are located on the front panel (Figure 4-1). These test jacks allow for two break-in tests (Network In and Network Out) and four monitor access points (Equipment Monitor In, Equipment Monitor Out, Network Monitor In, and Network Monitor Out) to the E1 DSU/CSU.

  • Page 78: Test Commands

    ACCULINK 3172 and 3174 E1 DSU/CSU Test Commands The test commands enable you to run loopbacks and test patterns on the E1 DSU/CSU, and to test the front panel LEDs. These tests can help you isolate areas of trouble if you are having problems with your E1 DSU/CSU.

  • Page 79: Local Loopback Tests

    Local Loopback Tests The Local Loopback tests enable you to conduct circuit testing and fault isolation for the digital line. The supported local loopback tests are: Line Loopback (LLB) Payload Loopback (PLB) DTE Loopback (DLB) Repeater Loopback (RLB) Data Channel Loopback (DCLB) Data Terminal Loopback (DTLB) NOTE DLB does not appear when the...

  • Page 80: Starting A Line Loopback

    ACCULINK 3172 and 3174 E1 DSU/CSU Starting a Line Loopback The Line Loopback command (LLB) loops the received signal on the network interface back to the network without change. To perform a Line loopback: " Procedure 1. Press F2 to select Test from the top-level display screen.

  • Page 81: Starting A Dte Loopback

    Starting a DTE Loopback The DTE Loopback command (DLB) loops the received signal on the DTE Drop/Insert port back to the DTE without change. A DTE loopback can be activated and deactivated based on the state of an external contact on the DTE Drop/Insert port.

  • Page 82: Starting A Data Channel Loopback

    ACCULINK 3172 and 3174 E1 DSU/CSU 3. From the Loopback screen, press display the RLB selection on the screen. Loopback: Abort 4. Press F3 to select RLB. Loopback: Test Started appears on Line 2. If a Repeater loopback is already in progress, the Already Active message appears.

  • Page 83: Starting A Data Terminal Loopback

    Starting a Data Terminal Loopback The Data Terminal Loopback command (DTLB) loops the data received from the selected port, for all DS0 channels allocated to the port, back out of the port. This loopback occurs after the data passes through the port circuitry but before it reaches the E1 framer.

  • Page 84: Test Patterns

    ACCULINK 3172 and 3174 E1 DSU/CSU 4. From the Loopback Abort screen, press the desired Function key to abort All or one specific loopback test. Use the scroll keys, if necessary. Loopback: Abort If you select ALL, LLB, PLB, DLB, or RLB, skip Step 5.
  • Page 85 4. From the Patterns Send screen, press F1 to send a 511 pattern, F2 to send a 1-in-8 pattern, or F3 to send a QRSS pattern. Patterns: Send 1in8 If you send a 1-in-8 pattern, skip Step 5. 5. From the Send screen, press the Function key that corresponds to the port for which you want to send a test pattern.

  • Page 86: Monitoring Test Patterns On Individual Data Ports

    ACCULINK 3172 and 3174 E1 DSU/CSU Monitoring Test Patterns on Individual Data Ports Use the Monitor command to monitor QRSS or 511 test patterns on the channels allocated to an individual data port. This command provides the number of errors detected in the test pattern (5 digits, maximum 99999).

  • Page 87: Lamp Test

    4. From the Patterns Abort screen, press the desired Function key to abort either All active test patterns, active Send test patterns, or the active Monitor (Mon) test pattern. Patterns: Abort Send If you select All, the E1 DSU/CSU terminates all active test patterns and displays the message Command Complete.

  • Page 88: Displaying E1 Dsu/Csu Test Status

    ACCULINK 3172 and 3174 E1 DSU/CSU 5. The following screens alternately appear on the LCD until you press a Function key to return to the Lamp Test screen. In addition, all LEDs blink. 0123456789 : ; < = > ? @ABCDEFGHIJKLMNO 6.
  • Page 89 Message No Test Active No tests are currently active. LLB Test Active The network interface is in Line loopback. PLB Test Active The network interface is in Payload loopback. DLB Test Active The DTE Drop/Insert port is in DTE loopback. RLB Test Active The DTE Drop/Insert port is in Repeater loopback.
  • Page 90 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. 4-26 March 1999 3170-A2-GB20-30...

  • Page 91: Front Panel Menu

    Front Panel Menu DSU E1 CEPT Stat Test Cnfig Ctrl Rlpbk Lpbk Ptrns Lamp DevHs STest Perf TStat LED ClrReg Reset CID E1 Prtn Prtn Abort Send NET Prt1 Prt2 Prt3 Prt4 Near DCLBUP DCLBDN 1in8 QRSS Near QRSS 511 8Tot Intvl Abort...
  • Page 92 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. March 1999 3170-A2-GB20-30...

  • Page 93: Technical Specifications

    ................Overview The technical specifications for the Models 3172 and 3174 DSU/CSUs are listed in Table B-1.
  • Page 94 ACCULINK 3172 and 3174 E1 DSU/CSU Models 3172/3174 DSU/CSUs Technical Specifications Specifications PORT INTERFACE Standards Rates APPROVALS CLOCKING SOURCES PHYSICAL DIMENSIONS Height Width Depth WEIGHT ENVIRONMENT Operating Temperature Storage Temperature Relative Humidity Shock and Vibration Table B-1 (2 of 2) Criteria EIA-530-A, V.35, RS- 449...

  • Page 95: Configuration Options

    Overview ................DTE Interface Configuration Options Port Configuration Options .
  • Page 96 ACCULINK 3172 and 3174 E1 DSU/CSU DTE Interface Configuration Options DTE Port: Enab Next Enab Disab Prev DTE Drop/Insert Port. Enables the use of the DTE Drop/Insert port. Enab – Allows the use of the DTE Drop/Insert interface. Disab – Prohibits the use of the DTE Drop/Insert interface.
  • Page 97 Port Configuration Options Port Type: E530 Next E530 V.35 RS449 Prev Data Port Type. Allows selection of the data port interface type. E530 – Configures the port as an EIA-530-A compatible interface. EIA-530-A DTEs can be directly connected to the DB25 connector on the back of the E1 DSU/CSU.
  • Page 98 ACCULINK 3172 and 3174 E1 DSU/CSU All Ones: Both Next Disab Both Send All Ones on Data Port Not Ready. Specifies the conditions on the data port that determine when valid data is not being sent from the DTE. When this condition is detected, all ones are sent to the network on the DS0 channels allocated to the port.
  • Page 99 EDL: Disab Next Enab Disab Prev Embedded Data Link. Specifies whether Embedded Data Link (EDL) is enabled for a particular port. If EDL is enabled, then 8 kbps of the total bandwidth allocated for this port is not available to the synchronous data port. For example, if the port rate is 256 kbps (4 DS0 channels allocated) and EDL is enabled, then only 248 kbps is available to the port.
  • Page 100 ACCULINK 3172 and 3174 E1 DSU/CSU Far-end: Disab Next Disab Maint Prev Far-End Performance Statistics. Specifies whether to monitor for far-end performance report messages (PRMs) and maintain far-end performance registers for a particular port. Disab – Disables far-end performance statistics.
  • Page 101 Network Interface Configuration Options Network Interface Configuration Options NET Frame: noCRC Next CRC4 noCRC Prev Network Line Framing Format. Designates the framing format for the Network E1 interface. CRC4 – Configures for the CRC4 framing format. noCRC – Configures for the non-CRC4 framing format. Mgmt Link: Disab Next Disab...
  • Page 102 ACCULINK 3172 and 3174 E1 DSU/CSU Channel Configuration Options The Channel configuration options are divided into two tables as follows: DTE Channel Configuration Options (Table C-4) Data Port Channel Configuration Options (Table C-5) DTE Channels: TS16 Assign DTE Drop/Insert Channel. Allows the selection of time-slot 16 (TS16) for signaling information or assigns DS0 channels from the DTE Drop/Insert interface to DS0 channels on the Network E1 interface.
  • Page 103 Data Port Channel. Allows the assignment of a particular port to DS0 channels on either the Network E1 interface, the DTE Drop/Insert interface, or another port (see the Assign To configuration option below). NOTE: For Model 3172 DSU/CSUs, only Ports 1 and 2 are available. Assign To: NET...
  • Page 104 ACCULINK 3172 and 3174 E1 DSU/CSU Data Port Channel Configuration Options Port Rate: 384 Next 1152 1216 1280 1344 1408 Next 1008 1064 1120 1176 1232 Data Port Rate (appears when using the block channel allocation method, or when a synchronous data port is assigned to another synchronous data port).
  • Page 105 Data Port Channel Configuration Options Next – – – – – Next – – – – – Data Port Channel Allocation (appears for the individual channel method only). Designates the DS0 channel to allocate to this port (N1–N31 for the Network E1 interface and D1–D31 for the DTE Drop/Insert interface). Line 1 displays the 31 channels for the Network E1 interface or the DTE Drop/Insert interface.
  • Page 106 Int – Configures the internal clock as the primary clock source. Ext – Configures an external clock (provided through the Clock In connector) as the primary clock source. NOTE: For Model 3172 DSU/CSUs, Ports 3 and 4 are not available. Sec Clk Src: NET...
  • Page 107 User Interface Configuration Options Self-Test: Enab Next Enab Disab Prev Initial Self-Test. Specifies whether the E1 DSU/CSU performs a device self-test at power-up and after a device reset. Enab – Enables a self-test. Disab – Disables the self-test. Com Use: ASCII Next SNMP ASCII...
  • Page 108 ACCULINK 3172 and 3174 E1 DSU/CSU Com Rate: 9.6 Next 14.4 Communication Port Rate. Configures the bit rate for the communication port. 1.2 – Sets the bit rate to 1200 bps. 2.4 – Sets the bit rate to 2400 bps.
  • Page 109 Ignore DTR: No Next Prev Communication Port Ignore DTR State. Specifies whether the E1 DSU/CSU ignores the state of the Data Terminal Ready (DTR) input to the communication port. Yes – DTR is ignored. No – DTR is not ignored. NOTE: This configuration option is not available if the communication port is configured for synchronous operation.
  • Page 110 ACCULINK 3172 and 3174 E1 DSU/CSU Alarm Configuration Options Alrm Msg: Disab Next Enab Disab Prev Alarm Messages. Controls the generation of alarm messages, which are routed to an ASCII terminal or printer attached to the communication port. For more information, refer to the Alarms section in Chapter 4, Maintenance .
  • Page 111 SNMP Configuration Options The SNMP configuration options are divided into two tables as follows: General SNMP Configuration Options (Table C-9) SNMP Trap Configuration Options System Name: Next Edit Clear Prev System Name. Specifies the SNMP system name for this unit. This is the name of this SNMP-managed node. Edit –...
  • Page 112 ACCULINK 3172 and 3174 E1 DSU/CSU CommunityName2: Next Edit Clear Prev Community Name 2. Specifies the second of two community names that are allowed to access this unit’s Management Information Base (MIB). External SNMP managers must supply this name to access an object in the MIB.
  • Page 113 Com IP Adr: Next Edit Clear Prev Com Port IP Address. Specifies the IP address for the communication port when it is configured as the SNMP management link. The IP address is only in effect when the Com Use configuration option is set to SNMP or Daisy. Edit –...
  • Page 114 ACCULINK 3172 and 3174 E1 DSU/CSU Aux IP Adr: Next Edit Clear Prev IP Address for the Auxiliary Port. Specifies the IP address needed to access the unit when the auxiliary port is configured as the SNMP management link. The IP address is only in effect when the Aux Use configuration option is set to SNMP or Daisy.
  • Page 115 Num Trap Mgrs: 1 Next Prev Number of Trap Managers. Specifies the number of SNMP trap managers that are to receive traps for this unit. NOTE: You must configure an IP address for each trap manager that is to receive trap messages. Trap n IP Adr: Clear Next Edit...
  • Page 116 ACCULINK 3172 and 3174 E1 DSU/CSU Entp Trap: Enab Next Enab Disab Prev Enterprise Specific Traps. Specifies whether enterpriseSpecific traps are enabled. For more information, refer to the SNMP Traps section in Chapter 4, Maintenance . Enab – Sends trap messages for enterpriseSpecific events to the currently configured trap manager(s).
  • Page 117 Configuration Worksheets This section contains one set of blank worksheets to be used when configuring your E1 DSU/CSU in the network. It is recommended that you copy these blank worksheets before using them. DTE Options Value DTE Port Enab, Disab DTE Frame CRC4, noCRC DTE Coding...
  • Page 118 ACCULINK 3172 and 3174 E1 DSU/CSU Prt1 Options Value Port Type E530, V.35, RS449 Base Rate Nx64, Nx56 NetDCLB Enab, Disab Port LB Disab, DTLB, DCLB, Both All Ones Disab, DTR, RTS, Both Rcv RAI None, Halt Tx Clock Int, Ext...
  • Page 119 Network E1 Interface Network Channel Allocations D1 – D31 indicates allocation to DTE Drop/Insert channels. Prt1 – Prt4 indicates allocation to synchronous data ports. 3170-A2-GB20-30 Allocation Drop/Insert Channel Allocations N1 – N31 indicates allocation to Network E1 Channels. Prt1 – Prt4 indicates allocation to synchronous data ports.
  • Page 120 ACCULINK 3172 and 3174 E1 DSU/CSU Port Chan Options Conf Assign To Assign By If Assign By Block Port 1 If Assign By Chan Assign To Assign By If Assign By Block Port 2 If Assign By Chan C-26 NET, DTE, Prt2, Prt3, Prt4...
  • Page 121 Port Chan Options Conf Assign To Assign By If Assign By Block Port 3 If Assign By Chan Assign To Assign By If Assign By Block Port 4 If Assign By Chan 3170-A2-GB20-30 NET, DTE, Prt1, Prt2, Prt4 Block, Chan Port Rate Nx64: 64, 128, 192, 256, 320, 384, 448, 512, 576, 640, 704, 768, 832, 896, 960, 1024, 1088, 1152,...
  • Page 122 ACCULINK 3172 and 3174 E1 DSU/CSU General SNMP Value Options System Name Edit, Clear System Location Edit, Clear System Contact Edit, Clear CommunityName1 Edit, Clear Access 1 Read, R/W CommunityName2 Edit, Clear Access 2 Read, R/W IP Adr Edit, Clear...

  • Page 123: Overview

    Overview ................E1 Network Interface .

  • Page 124: E1 Network Interface

    ACCULINK 3172 and 3174 E1 DSU/CSU E1 Network Interface The E1 network interface is either two BNC connectors (Transmit and Receive) for a 75-ohm unbalanced interface, or an RJ48C, 8-position, unkeyed modular connector (Table D-1) for a 120-ohm balanced interface.

  • Page 125: Pin Assignments

    DTE Drop/Insert Interface The DTE Drop/Insert interface connector is a DB15-type socket connector (Table D-2). For information about using Relay Contact Sense for external DTE loopback, refer to the Extrn DLB configuration option in DTE Interface Configuration Options Appendix C. The DTE Drop/Insert cable (Figure D-2) is typically supplied by a DTE vendor.

  • Page 126: Aux Port Interface

    ACCULINK 3172 and 3174 E1 DSU/CSU AUX Port Interface The Auxiliary (AUX) port connects to the SNMP LAN Adapter for SNMP applications, or to another E1 DSU/CSU’s COM port for daisy chain connectivity. (The SNMP LAN Adapter includes the cable that is needed to attach it to the E1 DSU/CSU.) The AUX port...

  • Page 127: Com Port Interface

    COM Port Interface The COM port connects to a PC for front panel emulation, to an ASCII terminal or printer for alarms, to a network device (e.g., a router) for SNMP applications, to the SNMP LAN Adapter for SNMP applications, or to another E1 DSU/CSU’s AUX port for daisy chain connectivity.
  • Page 128 ACCULINK 3172 and 3174 E1 DSU/CSU Figure D-3. COM Port-to-PC Cable Figure D-4. COM Port-to-Terminal/Printer Cable March 1999 3170-A2-GB20-30...

  • Page 129: Eia-530-A Port Interface Connector

    EIA-530-A Port Interface Connector The EIA-530-A Port Interface DB25 connector information is shown in Table D-5. EIA-530-A Port Interface DB25 Connector Signal Shield Signal Common Signal Common Transmitted Data Received Data Request-to-Send Clear-to-Send Received Line Signal Detector DCE Ready DTE Ready Transmit Signal Element Timing (DTE Source) Transmit Signal Element Timing (DCE Source) Receiver Signal Element Timing (DCE Source)
  • Page 130 ACCULINK 3172 and 3174 E1 DSU/CSU EIA-530-A-to-RS-449 Cable Interface The EIA-530-A-to-RS-449 adapter (Figure D-5) provides the RS-449 interface shown in DB25 SIGNAL PLUG SHIELD TD-A TD-B RD-A RD-B TXC-A TXC-B RXC-A RXC-B RTS-A RTS-B CTS-A CTS-B RLSD-A RLSD-B SIG. COMMON RCV.
  • Page 131 Signal Shield Signal Ground Receive Ground Send Common Send Data Receive Data Request-to-Send Clear-to-Send Receiver Ready Data Mode Terminal Ready Terminal Timing Send Timing Receive Timing Local Loopback Remote Loopback Test Mode 3170-A2-GB20-30 Table D-6 RS-449 Cable Interface Circuit ITU-T Mnemonic Number —...
  • Page 132 ACCULINK 3172 and 3174 E1 DSU/CSU EIA-530-A-to-V.35 Cable Interface The EIA-530-A-to-V.35 adapter (Figure D-6) provides the V.35 interface shown in Table D-7. DB25 SIGNAL PLUG SHIELD TD-A TD-B RD-A RD-B TXC-A TXC-B RXC-A RXC-B RLSD SIG. COMMON TT-A TT-B D-10 Figure D-6.
  • Page 133 Signal Shield Signal Common Transmitted Data Received Data Request to Send Clear to Send Data Channel Received Line Signal Detector Data Set Ready Data Terminal Ready Transmit Signal Element Timing (DTE Source) Transmit Signal Element Timing (DCE Source) Receiver Signal Element Timing (DCE Source) Local Loopback Loopback/Maintenance Test Indicator...
  • Page 134 ACCULINK 3172 and 3174 E1 DSU/CSU EIA-530-A-to-X.21 Cable Interface The EIA-530-A-to-X.21 adapter (Figure D-7) provides the X.21 interface shown in Table D-8. DB25 SIGNAL PLUG TD-A TD-B RD-A RD-B RXC-A RXC-B RTS-A RTS-B RLSD-A RLSD-B SIG. COMMON TT-A TT-B D-12 Figure D-7.
  • Page 135 Signal Signal Common Transmitted Data Received Data Request-to-Send Data Channel Received Line Signal Detector Transmit Signal Element Timing (DTE Source) Receiver Signal Element Timing (DCE Source) 3170-A2-GB20-30 Table D-8 X.21 Cable Interface ITU-T Number March 1999 Pin Assignments Direction — To DSU/CSU 2 (A) 9 (B)

  • Page 136: Optional Dc Power Cable

    ACCULINK 3172 and 3174 E1 DSU/CSU Power Input Connector The input power connector leads are shown in Table D-9. Table D-9 DC Power Connector Signal Pin Number – 48 Vdc Return – 48 Vdc A – 48 Vdc B +24 Vdc...
  • Page 137 External Clock Interface The External Clock connector pinouts are in Table D-10. A cable diagram is shown in Figure D-9. This is a customer-supplied cable. 3170-A2-GB20-30 Shield Clock (+) (RS422 only) Clock (–) (RS422 only) Clock In (RS423 only) Signal Common Figure D-9.
  • Page 138 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. D-16 March 1999 3170-A2-GB20-30...

  • Page 139: Snmp Mib Objects

    Overview ................Management Information Base (MIB) II (RFC 1213) System Group, MIB II .
  • Page 140 ACCULINK 3172 and 3174 E1 DSU/CSU IP Group Supported. ICMP Group Supported. TCP Group Not supported since the TCP protocol is not supported by the E1 DSU/CSU. UDP Group Supported. EGP Group Not supported since the EGP protocol is not supported by the E1 DSU/CSU.
  • Page 141 5 – Auxiliary RS-232 port 6 – DCE port 1 7 – DCE port 2 8 – DCE port 3 9 – DCE port 4 The supported ifIndexes for the 3172 DSU/CSU are: Net E1 DTE E1 COM port Auxiliary RS-232 port...
  • Page 142 ACCULINK 3172 and 3174 E1 DSU/CSU Interface Group – “ifMtu” Object (ifEntry 4) This object identifies the largest datagram that can be sent or received on the interface. It is applicable only to the interface configured as the SNMP management link.
  • Page 143 Interface Group – “ifLastChange” Object (ifEntry 9) This object contains the value of “sysUpTime” at the time the interface entered its current operational state. For the E1 DSU/CSU, this object is only updated for the “up” and “down” states. This is done since the “testing” state is not mutually exclusive with the “up”...
  • Page 144 ACCULINK 3172 and 3174 E1 DSU/CSU IP Group – “ipRouteTable” Object (ip 21) The routing table used by the E1 DSU/CSU is supported as a read/write table. Entries in this table may be added, deleted, or changed. You should exercise great caution when adding or modifying routes in the ipRoutingTable.
  • Page 145 IP Group – “ipRouteProto” Object (ipRouteEntry 9) This object is a read-only object and may have the following values in the E1 DSU/CSU. other(1) – Temporary route added by IP. local(2) – Route added or modified as a result of user configuration via the front panel.
  • Page 146 ACCULINK 3172 and 3174 E1 DSU/CSU DS1/E1 MIB (RFC 1406) The “ds1” object defined by RFC 1406 is supported for both the network and DTE Drop/Insert interfaces. The DS1 Near End Group and DS1 Fractional Group are supported for both interfaces. The DS1 Far End Group is not supported.
  • Page 147 Near End Group – “dsx1CircuitIdentifier” Object (dsx1ConfigEntry 8) This object is only supported on the network interface. Near End Group – “dsx1LoopbackConfig” Object (dsx1ConfigEntry 9) This object specifies the loopback state of the E1 interfaces. Only the following values are supported by the E1 DSU/CSU.
  • Page 148 ACCULINK 3172 and 3174 E1 DSU/CSU Near End Group – “dsx1Fdl” Object (dsx1ConfigEntry 13) This object specifies how Facility Data Link is being used. Only the following values are supported by the E1 DSU/CSU. More than one value may be active at a time.
  • Page 149 (rs232 1) This object contains the number of ports in the RS-232-like general port table. This number is 4 for the 3172 DSU/CSU and 6 for the 3174 DSU/CSU. General Port Table, RS-232-like MIB The general port table contains general configuration objects for the RS-232-like interfaces.
  • Page 150 ACCULINK 3172 and 3174 E1 DSU/CSU General Port Table – “rs232PortType” Object (rs232PortEntry 2) This object is used to identify the port’s hardware type. Only the following values are supported by the E1 DSU/CSU. rs232(2) – Used to identify the AUX and COM ports.
  • Page 151 Asynchronous Port Table, “rs232AsyncPortParity” (rs232AsyncPortEntry 4) This object specifies the parity used by the port. Only the following values are supported by the E1 DSU/CSU. none(1) – No parity bit. odd(2) – Odd parity. Supported on the COM port only. even(3) –...
  • Page 152 ACCULINK 3172 and 3174 E1 DSU/CSU Output Signal Table – “rs232OutSigChanges” (rs232OutSigEntry 4) This object is not supported by the E1 DSU/CSU. Generic-Interface MIB Extension (RFC 1229) The generic-interface MIB is an experimental MIB that provides extensions to the generic interface group defined in MIB II.
  • Page 153 testSendV54Up – OBJECT IDENTIFIER ::= [wellKnownTests 7] testSendV54Down – OBJECT IDENTIFIER ::= [wellKnownTests 8] testSend1in8 – OBJECT IDENTIFIER ::= [wellKnownTests 12] Generic Interface Test Table – “ifExtnsTestResult” Object (ifExtnsTestEntry 5) This object contains the result of the most recently requested test. Only the following values are supported by the E1 DSU/CSU.
  • Page 154 ACCULINK 3172 and 3174 E1 DSU/CSU Correlation between Menu Commands and SNMP Objects Table E-1 provides a correlation between how a function is performed or status is displayed on the front SNMP MIB to Front Panel Command Cross-Reference Front Panel Command Stat–>DevHS:...
  • Page 155 SNMP MIB to Front Panel Command Cross-Reference Front Panel Command Stat–>Tstat: LLB Test Active PLB Test Active RLB Test Active DLB Test Active DCLB on Port n DTLB on Port n 1–8 Test Active QRSS on Port n 511 on Port n Mon QRSS, Port n Mon511, Port n Stat–>LED–>Prtn:...
  • Page 156 ACCULINK 3172 and 3174 E1 DSU/CSU SNMP MIB to Front Panel Command Cross-Reference Front Panel Command Test–>Ptrns–>Send–>511–>Prt n Test–>Ptrns–>Abort–>Send–>Prt n Test–>Ptrns–>Mon–>QRSS–>Prt n Test–>Ptrns–>Abort–>Mon–>Prt n Test–>Ptrns–>Mon–>511–>Prt n Test–>Ptrns–>Abort–>Mon–>Prt n Cnfig–>Load Cnfig–>Save Cnfig–>Activ–>Edit–>DTE–>DTE–>Frame Cnfig–>Activ–>Edit–>DTE–>DTE–>Coding Cnfig–>Activ–>Edit–>Port–>Prtn->Port Type Cnfig–>Activ–>Edit–>Port–>Prt n –>TxClock Cnfig–>Activ–>Edit–>NET–>NET Frame Cnfig–>Activ–>Edit–>NET–>Mgmt Link Cnfig–>Activ–>Edit–>Chan–>DTE–>Assign...

  • Page 157: Ip Network Addressing Scenario

    IP Network Addressing Scenario Overview ................IP Network Addressing .
  • Page 158 ACCULINK 3172 and 3174 E1 DSU/CSU 135.18.1.2 135.18.1.3 135.18.1.4 135.18.1.5 Figure F-1. Daisy-Chained Standalone Devices at the Central Site ETHERNET 135.18.40.1 NETWORK ADAPTER SUBNET 135.18.1.0 135.18.1.7 135.18.1.6 March 1999 SUBNET 135.18.40.0 AUX/COM IP ADDRESS: 135.18.40.2 135.18.1.1 135.18.1.1 496-14645-03 3170-A2-GB20-30...

  • Page 159: Front Panel Emulation

    Overview ................Installing Front Panel Emulation Software Starting Front Panel Emulation Overview...
  • Page 160 ACCULINK 3172 and 3174 E1 DSU/CSU Starting Front Panel Emulation If the E1 DSU/CSU selected is not locally attached to the PC, you must first dial to the remote E1 DSU/CSU before starting front panel emulation. The modem attached to the PC must support AT commands for the Front Panel Emulation software to successfully place the call.

  • Page 161: Equipment List

    Model 3174 DSU/CSU (120 Vac) Model 3172 DSU/CSU (100 to 240 Vac) Model 3174 DSU/CSU (100 to 240 Vac) Model 3172 DSU/CSU (+24 / – 48 Vdc) Model 3174 DSU/CSU (+24 / – 48 Vdc) E1 120-ohm Network Interface Cable, 8-pin modular to DB15S...
  • Page 162 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. March 1999 3170-A2-GB20-30...

  • Page 163: Glossary

    Activ adapter address agent (SNMP) aggregate application ASCII ASCII terminal/printer asynchronous data authenticationFailure trap AUX port backup capability bandwidth bipolar signal 3170-A2-GB20-30 Glossary Active configuration area. The configuration option set that is currently active for the device. Before a configuration option set becomes active, you must save the set to the Active configuration area.
  • Page 164 ACCULINK 3172 and 3174 E1 DSU/CSU block allocation method byte CCITT cell site CEPT channel channel allocation CHAP character CID branch client CLOCK IN interface ClrReg branch Cnfig branch coaxial cable coding COMCODE COM port community name configuration configuration option...
  • Page 165 CRC5 CRC6 Ctrl branch Cust1 Cust2 DACS daisy chaining database data port DB15 connector DB25 connector DCLB default DevFail DevHS branch device digital signal diskette DL branch download downstream device drop/insert 3170-A2-GB20-30 CRC using five check bits. CRC using six check bits. Canadian Standards Association.
  • Page 166 ACCULINK 3172 and 3174 E1 DSU/CSU DS0 channel allocation DS1/E1 MIB DTE Drop/Insert interface DTLB EIA 530A Enterprise MIB enterprise-specific trap error Fact failure fault Fractional E1 frame Glossary-4 Data Service Unit. Data communications equipment that provides an interface between the DTE and the digital network.
  • Page 167 frame relay framing Generic-Interface Extension Get command (SNMP) ground HDB3 HDLC host ICMP ID branch interface Internet internetwork IP address ITU-T kbps link link layer protocol link trap 3170-A2-GB20-30 A switching interface that is designed to get frames from one part of the network to another as quickly as possible.
  • Page 168 ACCULINK 3172 and 3174 E1 DSU/CSU LOFC loopback test Lpbk branch manager (SNMP) Mbps menu tree MIB II mobile switching center network NETWORK interface node object (SNMP) option parity payload Perf branch Glossary-6 Loss Of Frame Count. A count of the number of LOFs declared.
  • Page 169 port PORT (1– 4) interface POWER connector power-up self-test PRBS primary clock protocol Ptrns branch pulse density QRSS Test register Rel branch reset RJ48C Rlpbk branch router RS-232 RS-232-like MIB RS-449 3170-A2-GB20-30 An access point for data entry or exit. The synchronous data port interface on the E1 DSU/CSU.
  • Page 170 ACCULINK 3172 and 3174 E1 DSU/CSU secondary clock self-test server Set command (SNMP) SLIP SNMP Stat branch STest branch StEvnt subnet subnet mask synchronous data TCP/IP time slot trap (SNMP) TStat branch TS16 V.24 V.35 V.54 Glossary-8 Receive Data. V.24 circuit 104.
  • Page 171 V.54 Loop 2 V.54 Loop 3 warmStart trap wireless communications XTXC 1in8 Test 511 Test 3170-A2-GB20-30 A CCITT standard for a data channel loopback (DCLB). A CCITT standard for a data terminal loopback (DTLB). Wide Area Network. A network that spans a large geographic area (e.g., a country). An SNMP trap that indicates that the device has reinitialized itself.
  • Page 172 ACCULINK 3172 and 3174 E1 DSU/CSU This page intentionally left blank. Glossary-10 March 1999 3170-A2-GB20-30...
  • Page 173 abort lamp test, 4-24 loopback, 4-19–4-20 test patterns, 4-22–4-23 ac power module, 1-5, B-1 Activ (Active) configuration area functional description, 3-11 in the menu tree, A-1 addressing. See IP (Internet Protocol) addressing agent, SNMP, 1-2 AIS (Alarm Indication Signal) condition ASCII terminal/printer message, 4-9 Device Health and Status message, 4-4 front panel LED indication, 3-5, 3-6...
  • Page 174 ACCULINK 3172 and 3174 E1 DSU/CSU configuration options procedure for changing, 3-11–3-14 tables Alarm, C-16 Channel, C-8–C-11 DTE Interface, C-2 General, C-12 Network Interface, C-7 Port, C-3–C-6 SNMP, C-17–C-22 User Interface, C-13–C-15 worksheets, C-23–C-28 connectors, rear panel cabling examples, 2-8...
  • Page 175 Gen (General) Configuration branch example of use, 3-34–3-35 in the menu tree, A-1 option table, C-12 option worksheet, C-23 HDB3 (High Density Bipolar 3) coding configuration option, C-2 Self-Test Health message, 4-2 ID (Identity) branch example of use, 3-8 in the menu tree, A-1 indicators.
  • Page 176 ACCULINK 3172 and 3174 E1 DSU/CSU NET (Network) Configuration branch example of use, 3-12 in the menu tree, A-1 option table, C-7 option worksheet, C-23 network interface cabling example, 2-8 channel allocation procedure, 3-20–3-26 configuration options, C-7 failure message, 4-2...
  • Page 177 Rlpbk (Remote Loopback) branch example of use, 4-14 in the menu tree, A-1 router applications, 2-1, 2-2 RS-449 interface, D-9 RX network connector, 1-5 RX shield, 1-5 secondary clock configuration option, C-12 functional description, 3-33 self-test displaying results, 4-2–4-3 front panel indications, 2-9, 3-5 troubleshooting, 4-11 Send Ones configuration option, C-2, C-4 Serial Line Internet Protocol (SLIP)
  • Page 178 ACCULINK 3172 and 3174 E1 DSU/CSU warmStart trap, 4-10 weight, B-2 wireless communications, 2-1, 2-2 worksheets, configuration option, C-23–C-28 Index-6 X.21 interface, D-13 March 1999 3170-A2-GB20-30...

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