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Meridian 1
Digital Trunk Interface/Computer-to-PBX
Interface
Installation and data administration
Document Number: 553-2811-200
Document Release: Standard 6.0
Date: December 1994
Year Publish FCC TM
© 1991, 1994
All rights reserved
Printed in the United States of America
Information is subject to change without notice. Northern Telecom reserves the right to make changes in design
or components as progress in engineering and manufacturing may warrant. This equipment has been tested
and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules.
SL-1 and Meridian 1 are trademarks of Northern Telecom.
DTI/CPI
Installation and data administration
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Table of Contents
Related Manuals for Nortel QPC472
Summary of Contents for Nortel QPC472
- Page 1 Meridian 1 Digital Trunk Interface/Computer-to-PBX Interface Installation and data administration Document Number: 553-2811-200 Document Release: Standard 6.0 Date: December 1994 Year Publish FCC TM © 1991, 1994 All rights reserved Printed in the United States of America Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.
- Page 2 Revision history September 16, 1991 Standard, release 1.0. Reissued for compliance with Northern Telecom standard 164.0. This document has been merged with DTI/CPI wire list (553-2811-200 Appendix 1). The information previously contained in that document is now contained in the chapter, “Wire list,” in this document. December 1, 1991 Standard, release 2.0.
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Page 3: Table Of Contents
DTI interfaces ......... QPC472 DTI specifications ....... - Page 4 Contents Cabling requirements ........NT8D74 Clock Controller to InterGroup cable .
- Page 5 List of figures Figure 1 QPC472 DTI faceplate layout ....... Figure 2 QPC720 PRI faceplate layout .
- Page 6 QPC472 transmission equalization SW2 switch settings for DTI ..Table 2 QPC472 DTI external connectors ......Table 3 QPC720 transmission equalization SW2 switch settings for PRI/DTI .
- Page 7 List of tables Table 12 Clock Controller shelves and slots ......Table 13 Clock Controller switch settings for QPC471 vintage A .
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Page 8: Introduction
Page 1 of 66 Introduction This document provides installation, data administration, and acceptance test procedures for the Digital Trunk Interface and Computer-to-PBX Interface (DTI/CPI) features. These features are available on ST, STE, RT, MS, N, NT, XN, and XT systems and on Meridian 1 system options 21, 21E, 51, 61, 71, and 81. The DTI/CPI features are offered on the following X11 software releases: —... -
Page 9: Other Documentation
Page 2 of 66 Introduction Other documentation Refer to the following Northern Telecom Publications for more information: — Meridian 1 system installation procedures (553-3001-210) — Circuit card installation and testing (553-3001-211) — ISDN Primary Rate Interface installation (553-2901-200) — Digital Trunk Interface/Computer-to-PBX Interface maintenance (553-2811-500) —... -
Page 10: Dti Installation
The DTI connects a Network loop to an external DS-1 interface for both voice and data transmission over 24 digital channels. The DTI interface requires a QPC472 DTI or QPC720 Primary Rate Interface (PRI) card. Because this document deals with DTI functions, both cards are referred to as the “DTI”... -
Page 11: Dti Interfaces
Canceller’s control protocol must conform with that of the Tellabs Model 251. QPC472 DTI specifications The QPC472 DTI only requires power and ground from the backplane. Power requirements are as follows: +5 volts at 3 amperes +12 volts at 50 milliamperes -12 volts at 50 milliamperes 553-2811-200 Standard 6.0 December 1994... -
Page 12: Qpc472 Transmission Equalization Sw2 Switch Settings For Dti
DTI installation Page 5 of 66 The QPC472 DTI contains five LEDs and five external connectors. Table 1 shows the QPC472 transmission equalization SW2 switch settings for DTI for all systems. Table 2 lists the external connectors located on the QPC472 DTI faceplate. -
Page 13: Qpc472 Dti Faceplate Layout
Page 6 of 66 DTI installation Figure 1 QPC472 DTI faceplate layout Failure alarm Line active alarm R ALM PRI or NT8D79xx to QPC720 PRI Yellow secondary reference alarm Y ALM Loopback test LP BK J2 PRI or NT8D79xx to QPC720 PRI... -
Page 14: Qpc720 Pri Specifications
Page 7 of 66 QPC720 PRI specifications The QPC720 PRI card can replace the QPC472 DTI. The two cards are compatible using X11 release 5 and later software. The QPC720 PRI requires power and ground from the backplane only. Power... -
Page 15: Sw3 Options For The Qpc720 Pri/Dti
Page 8 of 66 DTI installation Table 4 SW3 options for the QPC720 PRI/DTI Switch 3 options for PRI/DTI mode SW3-1 extended superframe format (ESF) superframe format (SF) SW3-2 B8ZS line encoding (required for 64 kbs) AMI line encoding SW3-3 facility data link (FDL) yellow alarm method (cannot be used in Canada) Digit 2 yellow alarm method Note 1: All switch positions for S2 (location B22) are OFF except as shown under the column labeled... -
Page 16: Qpc720 Pri Faceplate Layout
DTI installation Page 9 of 66 Figure 2 QPC720 PRI faceplate layout DIS: Card disabled ACT: Line active Red alarm RED: YEL: Yellow alarm LBK: Loopback test An access point to the regenerated DS-1 signal from the external network An access point to the DS-1 signal being transmitted by the DTI assembly... -
Page 17: Cable Requirements
DTI connections. Table 6 DTI cables and cable lengths Maximum Maximum Cable type From length (feet) length (meters) QCAD130 QPC472 QPC471 3.04 NT8D79xx QPC720 QPC775 (CC-0) QCAD130 QPC472 QPC471 3.04... -
Page 18: Installation Procedures
DTI installation Page 11 of 66 Installation procedures The DTI/PRI card occupies two adjacent slots on a shelf. Locations vary as shown in Table Table 7 Possible card locations by system System Shelf/Module Slot ST, STE 5-12 DTI expansion 5-12 CE expansion 2-9, 11-12, 12-13 N/NT/RT... -
Page 19: Table
Cable connections to the Clock Controller, Network, Patch panel, I/O panel, and Echo Canceller (Part 1 of 2) Cable From Comments type QCAD130 QPC720/ QPC471 CC-0 Run only when DTI is NT8D79xx QPC472 QPC775 primary reference clock source QCAD130 QPC720/ QPC471 CC-0 Run only when DTI is NT8D79xx QPC472 secondary reference clock source. - Page 20 Follow the steps below to install the card: Determine the cabinet and shelf location of the card to be installed. Unpack and inspect cards. Set option switches on the QPC472 as shown in Table 1. For the QPC720, refer to the switch and connector information in...
- Page 21 Note: The figures in each section show cabling arrangements for the QPC720 card. The equivalent connections on the DTI card are as follows: QPC720 J4 = QPC472 J5 QPC720 J6 = QPC472 J4 If required, install connecting blocks at MDF or wall mounted cross-connect terminal.
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Page 22: Removing The Dti Card
DTI installation Page 15 of 66 Removing the DTI card Disable Network Loop using DTI Maintenance LD 60. The command is DISL loop. Remove data from memory. Determine the cabinet and shelf location of the cards to be removed. Remove cross connections at MDF to wall-mounted cross-connect terminal. -
Page 23: Figure 3
Page 16 of 66 DTI installation Figure 3 ST, STE cabling arrangement QCAD130 to PRI or QPC720 PRI NT8D79xx to QPC720 PRI (Primary Reference) (Secondary Reference) Note 4 QCAD130 to PRI REF1 or NT8D79xx QPC471 Clock Controller No connection REF2 No connection J5 (Connector J5 is not used in the DTI application) T1 interface to... -
Page 24: Switch Settings In Dti Mode
DTI installation Page 17 of 66 Figure 4 Switch settings in DTI mode QPC720 PRI/DTI QPC472 DTI 7-pole 8-pole use 1-7 8-pole Note: See tables on switch settings for PRI/DTI transmission equalization. 553-1335 DTI/CPI Installation and data administration... -
Page 25: Ms Systems
If an additional cabinet is required to install more Network shelves, use a QCA109 cabinet. Figure 5 Switch settings in DTI mode QPC720 PRI/DTI QPC472 DTI 7-pole 8-pole use 1-7 8-pole Note: See tables on switch settings for PRI/DTI transmission equalization. -
Page 26: Figure 6
DTI installation Page 19 of 66 Figure 6 MS cabling arrangement QCAD130 to PRI or QPC720 PRI NT8D79xx to QPC720 PRI (Primary Reference) (Secondary Reference) Note 4 QCAD130 to PRI REF1 or NT8D79xx QPC471 Clock Controller No connection REF2 No connection J5 (Connector J5 is not used in the DTI application) T1 interface to external digital... -
Page 27: N/Nt And Rt Systems
DTI cabling arrangement in N/NT, RT, and 61 single and half group systems. Figure 7 Switch settings in DTI mode QPC720 PRI/DTI QPC472 DTI 7-pole 8-pole use 1-7 8-pole Note: See tables on switch settings for PRI/DTI transmission equalization. -
Page 28: Figure 8
DTI installation Page 21 of 66 Figure 8 N/NT, 51, RT, and 61 single and half group cabling arrangement QCAD130 to PRI or NT8D79xx to QPC720 PRI (Secondary Reference) QPC471 QPC720 PRI Clock (Primary Reference) Controller QCAD130 to PRI REF1 or NT8D79xx QPC471 Clock... - Page 29 Page 22 of 66 DTI installation Installing an additional Network shelf on the N/NT CAUTION The maximum number of DTI cards must not exceed three per shelf because the Network shelf cable harness shares the power breaker associated with each CPU. This procedure is used when additional shelf space is required for DTI cards in N or NT, 51, and 61 systems.
- Page 30 DTI installation Page 23 of 66 11 If the added QUD15 is located below the right Network shelf, use the C21 connector from the QCAD111 power harness instead of the C11. Otherwise, the procedure is identical. 12 At the QCAD111 power wiring harness, untie and then connect the C17 connectorized power connection cable to the right rear Network shelf (connect the C19 connectorized cable to the left rear Network shelf).
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Page 31: Xn/Xt Systems
See Figure 10 for a diagram of the XN/XT/71 DTI cabling arrangement. Figure 9 Switch settings in DTI mode QPC720 PRI/DTI QPC472 DTI 7-pole 8-pole use 1-7 8-pole Note: See tables on switch settings for PRI/DTI transmission equalization. 553-1335... -
Page 32: Xn/Xt And 71 Cabling Arrangement
DTI installation Page 25 of 66 Figure 10 XN/XT and 71 cabling arrangement QCAD130 to PRI or NT8D79xx to QPC720 PRI (Secondary Reference) QPC471 Clock QPC720 PRI Controller QCAD110 (Primary Reference) SCG0 QCAD130 Note 4 NT8D74xx to PRI or QPC417 REF1 NT8D79xx Junctor... -
Page 33: 21, 51, 61, 71, And 81
Page 26 of 66 DTI installation 21A, 21, 51, 61, 71, and 81 For basic information on installing a DTI card, refer to “Installation procedures” on page 11. For DTI cabling arrangements, refer to Figure Figure 11 DTI-to-Echo Canceller cabling Cross-Connect NCTE Block... -
Page 34: Echo Canceller Interface
DTI installation Page 27 of 66 Echo Canceller interface An Echo Canceller is used in conjunction with a Meridian 1 system for satellite transmission. Refer to “Cable requirements” on page 10 for general cabling information. The Echo Canceller is controlled by an RS-232 port on the DTI card. -
Page 35: Clock Controller Installation
Page 28 of 66 DTI installation Table 11 Settings for the 24 channels on the Echo Canceller Bypass Off-Hook Canceller Only H Reset H Hold Clock Controller installation There are three steps to installing a Clock Controller: Determining the location of the Clock Controller card (shelf and slot). Setting the switches on the card. -
Page 36: Determining Slots And Shelves
DTI installation Page 29 of 66 Determining slots and shelves The Clock Controller card installation site varies from system to system. Table 12 shows the systems, the shelves used, and the available slot or slots. Table 12 Clock Controller shelves and slots System Shelf Slot(s) -
Page 37: Clock Controller Switch Settings For Qpc471 Vintages B, C, D, E, F, And G
Page 30 of 66 DTI installation Table 14 Clock Controller switch settings for QPC471 vintages B, C, D, E, F, and G System Switch Setting ST, STE, 21, 21A, 21E Jumper Plug J1 TP8-9 Jumper Plug J2 TP11-TP12 Jumper Plug J1 TP9-TP10 Jumper Plug J2 TP12-TP13... -
Page 38: Clock Controller Switch Settings For Qpc471 Vintage H
DTI installation Page 31 of 66 Table 15 Clock Controller switch settings for QPC471 vintage H System ST, STE, 21A, 21, 21E MS, SN RT, N, NT, 51, 61 XN, XT, 71, 81 Cable length between the J3 faceplate connectors: 0-4.3 m (0-14 ft) 4.6–6.1m... -
Page 39: Replacing A Clock Controller
Page 32 of 66 DTI installation Replacing a Clock Controller Step 2 in the following procedures (“Installing a Clock Controller”) explains how to replace a card. Do not disable an active clock or a clock associated with an active CPU. Installing a Clock Controller Be sure to inspect the Clock Controller card before installing it. -
Page 40: Clock Controller Commands
DTI installation Page 33 of 66 Clock Controller commands During the installation procedure, you will use some of the Clock Controller commands available in LD 60. In the list of commands below, “x” refers to the Clock Controller number 0 for the card associated with the CPU0 and 1 for the card associated with CPU1. - Page 41 Page 34 of 66 DTI installation Procedure 1 Installing the Clock Controller in the ST, STE, 21, 21E, MS, N, RT, 51, and NT half group Note: Refer to the tables in this section to be sure you are using the correct vintage.
- Page 42 DTI installation Page 35 of 66 Connect the c3ables to the new card. — Connect the Primary reference to J2. — If applicable, connect the Secondary reference to J1. Set the faceplate ENL/DIS switch to ENL (enable). Set the error detection thresholds and clock synchronization control in LD 73 (optional if replacing card;...
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Page 43: Installing The Clock Controller In A Single Group
Page 36 of 66 DTI installation Installing the Clock Controller in a single group Procedure 2 Installing the Clock Controller in the NT, 61 Set faceplate ENL/DIS switch to DIS (disable) on the new circuit card. If replacing an existing card, do the following: —... - Page 44 DTI installation Page 37 of 66 Run and connect cables. — Connect the Primary reference to J2. — If available, connect the Secondary reference to J1. — Connect the cable between the two clocks to J3 on each controller card. Set the faceplate ENL/DIS switch to ENL (enable).
- Page 45 Page 38 of 66 DTI installation Procedure 3 Installing the Clock Controller in the XN, XT, 71, and 81 Note: The option 81 system requires a vintage H Clock Controller. Set faceplate ENL/DIS switch to DIS on new circuit card. If replacing an existing card, do the following: —...
- Page 46 DTI installation Page 39 of 66 Enable the Clock Controller by entering ENL CC x in LD 60. Set the error detection thresholds and clock synchronization controls in LD 73 (optional with card replacement; required with new installation). To track on a Primary or Secondary reference clock, use LD 60. The command follows: TRCK PCK (for Primary)
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Page 47: Cabling Requirements
Clock Controllers can require three different kinds of cable connections. — In a single controller system, cable QCAD130/NT8D79xx connects QPC720/QPC472 (PRI or DTI card) to QPC471/QPC775 at J2 when DTI/PRI is the Primary reference clock source. — In a single controller system, cable QCAD130/NT8D79xx connects QPC720/QPC472 to QPC471/QPC775 at J1 when DTI/PRI is the Secondary reference clock source. -
Page 48: Nt8D79 Pri/Dti To Clock Controller Cable
DTI installation Page 41 of 66 NT8D79 PRI/DTI to Clock Controller cable This cable connects the PRI/DTI card to the QPC471 Clock Controller card. It is available in the following lengths: — NT8D79AB 0.6 m (2 ft) — NT8D79AC 1.2 m (4 ft) —... -
Page 49: Data Administration
Page 43 of 66 Data administration This chapter describes the data administration procedures for the DTI feature. These include adding, changing, removing, and querying — the DTI feature — the CPI application of DTI The information presented here assumes the reader is familiar with the general principles of data administration on the Meridian 1 as described in X11 software management (553-3001-300). -
Page 50: Dti Data Administration
Page 44 of 66 Data administration DTI data administration A more detailed explanation of maintenance and out-of-service thresholds is located in Digital Trunk Interface/Computer-to-PBX Interface maintenance (553-2811-500). Also, refer to the X11 input/output guide (553-3001-400) for a complete listing and description of software programs. Prompt Response Comments... - Page 51 Data administration Page 45 of 66 Prompt Response Comments LFAC 0-(3)-128 24-hour loss of frame alignment threshold. If 0 is entered, trunks will be restored to service automatically. BIPV Bit error rate (bipolar violation and CRC) monitoring limits. 1-(3)-4, Maintenance threshold. 1-(2)-4 Out-of-service threshold.
- Page 52 Page 46 of 66 Data administration Prompt Response Comments Note: ESF can be specified for the QPC720 using X11 release 12 and later software. MODE TRK, LINK The mode in which the DTI hardware will be used. TRK = Digital Trunk mode, LINK = Digital Link mode. LCMT B8S, AMI The line coding method.
- Page 53 Data administration Page 47 of 66 Prompt Response Comments Step 3 Gather data to add, change, or remove a Digital Trunk route. Response to the following prompts in LD 16 is required. Defaults are in parentheses. NEW, CHG, Action Request (create, modify, or remove data). TYPE Route date block.
- Page 54 Page 48 of 66 Data administration Prompt Response Comments PTYP Port type at far end. Analog Tie trunk routes Analog satellite PBX TIE trunk or ESN satellite PBX TIE trunk. (ATT) Analog Tie trunks. Analog Tie trunk, used instead of “ATT” whenever the PBX has one or more satellite trunk routes (DST) to any digital satellite PBX that includes OPX telephones.
- Page 55 Data administration Page 49 of 66 Prompt Response Comments Step 4 Gather data to add, change, move, or remove a Digital Trunk. Response is required to the following prompts in LD 14. Defaults are in parentheses. NEW, CHG, Action Request (create, modify, move TN, remove data block, or MOV, OUT, terminate LD 14).
- Page 56 Page 50 of 66 Data administration Prompt Response Comments STRO Outgoing start arrangement. DDL, IMM, Delayed dial, Immediate dial. OWK, WNK Off-hook Wink, Wink. SUPN Yes, (No) Answer and disconnect supervision required. Class of service. DTN, (DIP) Digitone, (Dial Pulse). Step 5 Gather data for each Meridian 1 telephone that is to be a data call telephone.
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Page 57: Cpi Data Administration
Data administration Page 51 of 66 CPI data administration CPI is frequently connected to a computer by a direct cable. To restore service automatically with a direct connection, set all maintenance thresholds to their least sensitive values: RALM — 128 BIPC —... - Page 58 Page 52 of 66 Data administration Prompt Response Comments Gather data to add, change, or remove a CPI Digital Trunk Loop. Response to the following prompts in LD 17 is required. Defaults are in parentheses. NEW, OUT, Add data, remove data, change data, or end LD 17. CHG, END TYPE Configuration data block.
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Page 59: Acceptance Tests
Page 53 of 66 Acceptance tests This chapter describes the acceptance test procedure for the DTI feature. This test verifies the operation of the system hardware. The DTI card must be disabled before performing the self test or call processing will be disrupted. Self-test procedures Follow the steps below to activate the initial test procedure: Log into the overlay area. -
Page 60: Automatic Loop Test
Page 54 of 66 Acceptance tests Automatic loop test The automatic loop test checks the same functions as the self test. Unlike the self test, it can be run automatically as part of the midnight routines. Set the ATLP command to 1 as follows: —... -
Page 61: Link Diagnostic And Remote Loopback Tests
Acceptance tests Page 55 of 66 Link diagnostic and remote loopback tests The remote loopback test and the link diagnostic test are performed manually on a per-channel or a per-frame (24 channels) basis. The link diagnostic test, also called the far end loopback Link diagnostic test test, does not test the Meridian 1 DTI. -
Page 62: Link Diagnostic And Remote Loopback Test Procedures
Page 56 of 66 Acceptance tests Figure 12 DTI remote loopback test and DTI link diagnostic test Meridian 1 Far end Send test T1 connection pattern Verify test pattern LD60 RMST l LD60 RLBK l Perform self-test on Close loop at carrier specified loop interface point for testing 553-1374... -
Page 63: Table 17
Page 57 of 66 Wire list This chapter provides information required to build cables of nonstandard lengths for Digital Trunk Interface (DTI) applications. For installation of a private T1 transmission cable, consult Northern Telecom’s Transmission Division. The following pages contain lists and descriptions applying to Digital Trunk Interface (DTI) cables external to the Meridian 1 cabinet. -
Page 64: Table 17
Page 58 of 66 Wire list Table 17 QCAD129/NT9J93xx wire list DTI signal From Echo Canceller signal P1-1 P2-20 P1-2 P2-2 P1-4 P2-8 P1-5 P2-3 P1-10 P2-7 P1-12 P2-4 P1-9 P2-5 TPENB P1-15 Note: TPENB = Test Port Enable Bar. 553-2811-200 Standard 6.0 December 1994... -
Page 65: Qcad133/Nt8D97Xx Wire List
Wire list Page 59 of 66 QCAD133/NT8D97xx This cable is used to transport the T1 signal from the I/O filter assembly at the cabinet bulkhead to the Network Channel Terminating Equipment (NCTE) telephone company interface. For cabinets without an I/O filter assembly, this cable is used to transport the T1 signal from the QPC720 to the NCTE telephone company interface. -
Page 66: Qcad128/Nt8D83Xx Wire List
Page 60 of 66 Wire list QCAD128/NT8D83xx This cable transports the T1 signal from the DTI card to the I/O assembly at the cabinet bulkhead. Table 19 shows the QCAD128/NT8D83xx wire list. Standard length 10 ft (3.05 m) Construction 15-conducter ribbon, 28 AWG (0.321 mm), stranded P1 Connector 15-pin, male, subminiature D, with jack-screws P2 Connector... - Page 67 Family Product Manual Contacts Copyright FCC notice Trademarks Document number Product release Document release Date Publish Copyright Statement © 1998 Northern Telecom All rights reserved Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.
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