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General DataComm TMS-3000 Operating And Installation Instructions

Celp voice channel module
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Publication No. 036R480-000
Issue 6, January 1995
OPERATING AND INSTALLATION INSTRUCTIONS
FOR
TMS-3000
CELP VOICE CHANNEL
MODULE
General DataComm, Inc.
MIDDLEBURY, CONNECTICUT
06762-1299

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  • Page 1 Publication No. 036R480-000 Issue 6, January 1995 OPERATING AND INSTALLATION INSTRUCTIONS TMS-3000 CELP VOICE CHANNEL MODULE General DataComm, Inc. MIDDLEBURY, CONNECTICUT 06762-1299...
  • Page 2 ATTENTION! STATIC SENSITIVE DEVICES PROPER HANDLING AND GROUNDING PRECAUTIONS REQUIRED This equipment contains electrostatic sensitive devices. Use ESD precautionary procedures when removing or inserting parts or printed circuit (pc) cards. Keep parts and pc cards in their antistatic packaging material until ready to install. The use of an antistatic wrist strap, connected to the grounded equipment frame or chassis, is recommended when handling pc cards during installation, removal, or setting of on-board option switches.
  • Page 3 TMS-3000 CELP VOICE CHANNEL MODULE (GDC PART NOs. 036M285-001 through -005) This product was designed and manufactured by General DataComm, Inc. (GDC) Middlebury, Connecticut 06762-1299...
  • Page 5 Middlebury, CT 06762-1299 PROPRIETARY NOTICE This publication contains information proprietary and confidential to General DataComm, Inc. Any reproduction, disclosure, or use of this publication is expressly prohibited except as General DataComm, Inc., may otherwise authorize in writing. Copyright, General DataComm, Inc., 1995...
  • Page 6 FCC-REQUIRED NOTIFICATION FOR USERS OF FCC-REGISTERED EQUIPMENT Read before using this technical manual or installing subject equipment. This equipment complies with Part 68 of the Federal Communications Commission (FCC) Rules and Regulations. Connection of data communication equipment to the public telephone network is regulated by the FCC Rules and Regulations.
  • Page 7 CANADIAN DEPARTMENT OF COMMUNICATIONS (DOC) REQUIRED NOTIFICATION FOR USERS OF DOC-CERTIFIED EQUIPMENT Read before using this technical manual or installing subject equipment. The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational, and safety requirements.
  • Page 8 Name __________________________Title ______________________Date Company _________________________________________________ Mail Drop _______________________________ City ___________________________ State ____________ ZIP Code or Country _____________________________ Telephone Number ____________________ FAX Number _____________________ Copy or remove this page and mail to: Publications Department Technology Center General DataComm Industries, Inc. Middlebury, Ct 06762-1299...

  • Page 9: Table Of Contents

    TABLE OF CONTENTS Section & Subject Page 1 — INTRODUCTION OVERVIEW ..............................1-1 FUNCTIONAL DESCRIPTION ........................1-1 FUNCTION OF THE TMS/SUPERVISORY CONTROLLER ..............1-2 TECHNICAL MANUALS ..........................1-2 EQUIPMENT LIST ............................1-3 SERVICE AND TRAINING ........................1-3 APPLICATIONS ..............
  • Page 10 TABLE OF CONTENTS (Cont.) Section & Subject Page 5 — TESTS (Cont.) DATA PATH TESTS ........................... 5-1 Digital Test ..............................5-1 Control State Test ............................5-1 User Data Test ............................5-1 1 kHz Tone Test ............................5-1 SET dB LEVEL ADJUSTMENT ........................
  • Page 11 LIST OF TABLES (Cont.) Section & Tables Page 2 — INSTALLATION CELP PLUG-IN OPTION, SIGNALING TYPE ................2-2 VOICE CHANNEL CONNECTION CABLES .................. 2-4 OPTION SELECTIONS, M-SIGNALING TYPES ................2-5 OPTION SELECTIONS, E-LEAD SIGNALING STATE ..............2-6 OPTION SELECTIONS, E-LEAD POLARITY ................2-6 OPTION SELECTIONS, NOISE SUPPRESSION FILTER ..............

  • Page 13: Introduction

    4.8 and 6.4 kHz. A CELP module in a TMS-3000 also offers a bit rate of 9.6 kHz. OCM CELP is covered in GDC Publication 036R340-000. The CELP Voice Channel Module is used in transmission applications to maximize available bandwidth.

  • Page 14: Function Of The Tms/Supervisory Controller

    Version GTS 2.0 (or later), GDC Publication No. 036R603. Installing in a TMS Compact: • Instruction Manual for TMS Compact, GDC Publication No. 036R320- 000 and TMS-3000 User's Guide for Software Version GTS 2.0 (or later), GDC Publication No. 036R603. Installing in a Univ. MM+ V4 TDM: •...

  • Page 15: Equipment List

    Voice at 9.6/6.4/4.8 KHz E&M signaling in-band and out-of-band FAX 036P286-001 Group 3 at 9.6/6.4 KHz rates 036M285-005 CELP 96 036P285-005 Voice at 9.6/4.8 KHz E&M signaling in- band and out-of-band 036P286-001 NOTE 9.6 kHz is available only in TMS-3000.

  • Page 17: Installation

    CELP SELECTION Module. To configure software options on a CELP Voice Channel Module installed in the TMS-3000 or TMS Compact, refer to the TMS-3000 User's Guide for Software Version GTS 2.0 (or later), GDC Publication 036R603.

  • Page 18: Celp Plug-In Option, Signaling Type

    Do not under any circumstances change the settings of SW1 on the piggyback card. Figure 2-1 shows the location of the option switches and jumpers on the CELP base card. Tables 2-3 through 2-10 provide the information necessary to configure the CELP Voice Channel Module for the TMS-3000.

  • Page 19: Installation

    INSTALLATION CELP PIGGYBACK CARD 036P286-001 CSIG ON 1 2 3 4 5 6 7 8 NORM X7 X8 PIGGYBACK P/N 036P285 NOTE JUMPERS SHOWN IN DEFAULT POSITION. NOTE DEFAULT FOR S1-1 THROUGH S1-8 IS OFF. THIS PROVIDES O dBm TRANSMIT AND O dBm RECEIVE LEVELS.

  • Page 20: Mounting Of Celp Voice Channel Module

    The CELP Voice Channel Module mounts into an empty channel slot in the TMS-3000, TMS Compact, Univ. MM+ V4 or MINIMUX TDM. Connections to the 4-wire VF line are made via standard GDC voice channel cables (refer to Table 2-2).

  • Page 21: Celp Voice Channel Signaling

    INSTALLATION The CELP Voice Channel Module supports 4-wire voice with two-state CELP VOICE E&M signaling only. The five major E&M signaling systems (E&M CHANNEL types I-V) are supported. For the United Kingdom, SSDC5A is supported. SIGNALING As previously mentioned, the CELP Voice Channel Module provides two- state signaling only.

  • Page 22: E-Lead Signaling State

    INSTALLATION Table 2-4 describes how the E-Lead signaling is conditioned on loss of E-Lead Signaling power in the TMS-3000 controller. State TABLE 2-4. OPTION SELECTIONS, E-LEAD SIGNALING STATE Jumper Jumper Feature Position Position Application Loss of Power Busy (BSY) Busy (BSY)

  • Page 23: Noise Suppression Filter

    INSTALLATION Table 2-6 describes the procedure for setting the Noise Suppression Filter Noise Suppression for the various E&M signaling types. Filter TABLE 2-6. OPTION SELECTIONS, NOISE SUPPRESSION FILTER Jumper Feature Position Application Noise Suppression Filter US, US NSF is disabled for signaling types I-V. (NSF) as defined by SSDC5A specification UK, UK...

  • Page 24: E-Lead Loss Of Sync

    INSTALLATION The M-lead input at one end is normally conveyed to the E-lead output at E-Lead the other end with no more than one millisecond of timing distortion. Loss of Sync When CELP Voice Channel Module card loses end-to-end synchronization, the E-lead is conditioned according to Table 2-8. TABLE 2-8.

  • Page 25: Celp Module Analog Levels

    INSTALLATION The nominal VF input and output analog levels are selected by DIP CELP Module switches S1-1 and S1-8. Table 2-9 describes the setting of these switches. Analog Levels These switches are programmed for peak levels with a safety margin of approximately 3 dB allowed.

  • Page 26: Analog Input Fine Level Adjustments

    INSTALLATION The analog sections in both transmit and receive directions have ad- Analog Input justments to fine tune the signal amplitude to compensate for installa- Fine Level tions where the input levels are not within the –16 to + 0 dB range or when Adjustments excessive output cable lengths require greater than nominal signal drive.

  • Page 27: Echo Canceller

    INSTALLATION The CELP Module contains an Echo Canceller. This Echo Canceller can Echo Canceller neutralize echo in tail circuits up to 8ms round trip delay. When the tail circuit delay is greater than this value then an external echo canceller must be used.

  • Page 29: Overview

    SECTION 3 INSTALLATION OVERVIEW The CELP Voice Channel Module operates automatically after it is in- stalled (refer to Section 2, Installation). You simply send and receive analog voice signals while the CELP Voice Channel Module functions transparently. You may check the operation of the CELP Voice Channel Module by monitoring the front panel indicators.
  • Page 30 OPERATION AMBER LED LIGHTS WHEN THE E-LEAD OF THE VOICE CHANNEL IS IN A BUSY STATE. OUTPUT FROM THE VOICE CHANNEL IS IN THE FORM OF A SOLID STATE SWITCH. LOW RESISTANCE EQUALS A BUSY CONDITION (E-LEAD TO GROUND). E-SIGNAL IS A PRODUCT OF THE REMOTE CHANNELS M-SIGNAL.

  • Page 31: Principles Of Operation

    SECTION 4 PRINCIPLES OF OPERATION OVERVIEW This section describes the general circuit functions of the CELP Voice Channel Module. Signal flow and processing through the CELP Module is described to show the relationship of the hardware and interconnection with external equipment. Analog voice information is directed into the transmit section of the Base Card CELP base card via a standard 600-ohm transformer coupled telephone...

  • Page 32: Piggyback Card Operation

    GDC does not recommend pulse dialing via the CELP Voice Channel Module (-001) on TMS-3000/TMS Compact systems . The -002, -003, -004 and -005 versions of the CELP Voice Channel Module E&M Signaling accomplish E&M...
  • Page 33 PRINCIPLES OF OPERATION If the M lead is in the Idle condition then the M lead information is retransmitted every 60 seconds. This causes a short break in the voice path every 60 seconds. Therefore it is important that on systems which do not use E&M signal- ing (e.g., open lines for traders) that the M lead is somehow forced into the Busy state.

  • Page 35: Overview

    SECTION 5 TESTS OVERVIEW This section describes the tests that may be performed on the CELP Voice Channel Module after installation. These tests are performed using a TMS/Supervisory controller and are used to isolate problems in the data communications system. Tests are performed through the CELP Voice Channel Module base and piggyback card only.

  • Page 36: Set Db Level Adjustment

    For technical assistance, customers should call DataComm Service Cor- TECHNICAL poration at 203-598-7526. ASSISTANCE PROCEDURE In Canada: General DataComm (Canada) Ltd. Service and Repair Facility 1790 Beaulac Street St. Laurent, Montreal, Quebec H4R 1W8 Telephone: 1-514-336-5454 TWX: 610-421-3221 Telex: 05824085 In the United Kingdom, contact the GDC area manager at: General DataComm (U.K.) Ltd.

  • Page 37: Training

    TESTS In the Pacific: General DataComm Pty. Suite 404 275 Alfred Street North North Sydney, NSW 2060, Australia Tel: 011-61-2-956-5099 Fax: 011-61-2-956-5083 In Asia: General DataComm 401 Centry Square 1-13 D'Aguilar Street Central, Hong Kong Tel: 011-852-5265511 Telex: 780-80579 Fax: 011-852-5259944...

  • Page 39: Appendix A - Technical Characteristics

    APPENDIX A TECHNICAL CHARACTERISTICS Item Specifications Electrical Power Requirements: CELP assembly + 5 V dc ±5%, .70 A, typical, 1.0 A maximum, 3.50 W, typical + 12 V dc ±10%, 7 mA, typical, 10 mA, maximum, 0.084 W, typical – 12 V dc ±10%, 30 mA, typical, 40 mA, maximum, 0.36 W, typical Telephone Interface (4-wire/E&M) Impedance 600-ohms resistive...
  • Page 40 APPENDIX A TECHNICAL CHARACTERISTICS (Cont.) Item Specifications Echo Canceller Maximum Tail Circuit Delay 8 ms In-Band E&M Signaling (-002 and -003) Bandwidth Overhead No overhead bandwidth required. Pulse Distortion ±625 microseconds. Minimum pulse width 20 ms for a 6.4 kHz channel 20.625 ms for a 4.8 kHz channel.

  • Page 41: Appendix B - Celp Voice Channel Module Applications

    One main application of the CELP Voice Channel Module is to maximize voice channel capacity of n x 64 kHz aggregates on TMS-3000/TMS Compact, Univ. MM+ V4 and MINIMUX TDM networks. This is especially important on long haul routes where bandwidth costs remain high.
  • Page 42 APPENDIX B Larger networks with 56 kHz and 64 kHz circuits can also utilize the CELP Voice Channel Module to maximize usage of bandwidth. Voice channels at higher rates quickly absorb much of the data capacity, and restrict the potential number of voice circuits. The CELP Voice Channel Module may provide additional voice channels at 4.8, 6.4 or 9.6 kHz without impacting the total bandwidth available for data.
  • Page 43 TRUNKS TMS-3000 OR TMS COMPACT MINIMUX TDM SATELLITE LINK UNIV. MM+ V4 FIGURE B-1. CELP VOICE CHANNEL MODULE USED IN PBX ANALOG TIE TRUNK (TMS-3000, TMS COMPACT AND UNIV. MM+ V4 APPLICATION) ANALOG TRUNKS ANALOG MINIMUX TRUNKS 56/64 KBPS MINIMUX TDM...
  • Page 44 DEALER DEALER TMS-3000 TMS-3000 ROOM ROOM LONDON NEW YORK DEALER TMS-3000 ROOM TOKYO FIGURE B-3. DEALER ROOM-TO-DEALER ROOM COMMUNICATIONS (TMS-3000/TMS COMPACT APPLICATION) DEALER DEALER TMS-3000 MINIMUX ROOM ROOM LONDON NEW YORK DEALER MINIMUX ROOM TOKYO FIGURE B-4. DEALER ROOM-TO-DEALER ROOM COMMUNICATIONS...

  • Page 45: Appendix C - M-Lead Signaling Interfaces

    APPENDIX C M-LEAD SIGNALING INTERFACES OVERVIEW Figures C-1 through C-7 represent M-lead signaling interface diagrams for GDC voice channel card types to external equipment. TYPE-I SIGNALING VOICE CHANNEL TERMINATING EQUIPMENT M-LEAD M-LEAD SENSOR (ISOLATED) — BATT IDLE -12 V -12 TO -48 V BUSY X1 ON CELP MODULE...
  • Page 46 APPENDIX C TYPE-II SIGNALING VOICE CHANNEL TERMINATING EQUIPMENT M-LEAD M-LEAD SENSOR (ISOLATED) — BATT -12 V X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL VOICE CARD X1 ON VLBRV & CELP CHANNEL MODULE -12 TO X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE -48 V X4 ON VOICE II/PCM &...
  • Page 47 APPENDIX C TYPE-III SIGNALING VOICE CHANNEL TERMINATING EQUIPMENT M-LEAD M-LEAD SENSOR (ISOLATED) — 975 Ω BATT -12 V IDLE X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL BUSY VOICE CARD X1 ON VLBRV & CELP CHANNEL MODULE X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE -12 TO X4 ON VOICE II/PCM &...
  • Page 48 APPENDIX C TYPE-IV SIGNALING VOICE CHANNEL TERMINATING EQUIPMENT M-LEAD M-LEAD SENSOR (ISOLATED) — BATT -12 V X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL VOICE CARD X1 ON VLBRV & CELP CHANNEL MODULE X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE IDLE X4 ON VOICE II/PCM &...
  • Page 49 APPENDIX C TYPE-V SIGNALING TERMINATING VOICE EQUIPMENT CHANNEL M-LEAD M-LEAD SENSOR (ISOLATED) — BUSY IDLE BATT -12 V X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL VOICE CARD X1 ON VLBRV & CELP CHANNEL MODULE X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE -12 TO X4 ON VOICE II/PCM &...
  • Page 50 APPENDIX C TYPE-II SIGNALING BACK-TO-BACK. USING NO EXTERNAL BATTERY. VOICE CHANNEL VOICE CHANNEL CABLE IDLE BUSY M-LEAD M-LEAD SENSOR (ISOLATED) — BATT -12 V X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL VOICE CARD X1 ON VLBRV & CELP CHANNEL MODULE BUSY X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE X4 ON VOICE II/PCM &...
  • Page 51 APPENDIX C U.K.OPERATION (SSDC5A) TERMINATING VOICE EQUIPMENT CHANNEL M-LEAD M-LEAD SENSOR (U.K.) — - 12 V BATT -12 V IDLE X1 ON VOICE II/ASP CHANNEL MODULE AND UNIVERSAL BUSY VOICE CARD X1 ON VLBRV & CELP CHANNEL MODULE X4 ON UNIVERSAL VOICE II/CVSD CHANNEL MODULE X4 ON VOICE II/PCM &...

  • Page 53: Appendix D - Celp Circuit Voice Level Testing

    INTRODUCTION The CELP (Codebook Excited Linear Predictive) module is installed and used in General DataComm multiplexer equipment to provide several different types of application scenarios. These scenarios range from the simplest (4-wire) applications to the most complex applications using con- ference networks with analog bridging of tandem CELP circuits.
  • Page 54 APPENDIX D The CELP module can be installed in TMS-3000, Univ. MM+ V4 or GENERAL MINIMUX Plus equipment manufactured by General DataComm. The CELP module is used to provide an end to end (MUX to MUX) voice cir- cuit. VF (Voice Frequency) signals into the CELP module are converted to digital data and transmitted across an aggregate trunk to a remote MUX where it is converted back into an VF signal.
  • Page 55 0 dBm VF signal should appear on the Aggregate trunk in digital format, but the data bits are not contained within any single 64 kHz DS0 channel, i.e., if a Voice channel were installed in a TMS-3000 node, and the Voice channel’s transmit attenuator and gain switches...
  • Page 56 APPENDIX D The following paragraphs provide details on terms and concepts which Detailed Reference are used in this appendix. You should refer to this material for precise definitions of terms used throughout the appendix. ECHO RETURN LOSS Echo return loss is the signal which escapes through the transmit path of (ERL) the hybrid when a signal is being received.
  • Page 57 An example of the use of the terms (dBm0 and TLP) would be as follows: Picture yourself at a TMS-3000 location, about to test a voice circuit with someone else at the other end of the voice circuit. He may ask you to in- ject a 1004 Hz tone at a 0 dB level, so he can check his receive level.
  • Page 58 APPENDIX D A bridged circuit used for open voice communications Hoot 'N Holler between multiple locations. These circuits allow simultaneous transmission and reception to/from all termination points on the circuit. AKA-2W/4W termination set. device used Hybrid impedance matching and interconnection of a 2-wire circuit to a 4-wire circuit.
  • Page 59 APPENDIX D This circuit connects two 4-wire elements end to end. There are no Simple 4-Wire hybrids this circuit. elements 4-wire telephone Connection instruments or 4-wire electronic PBXs. TMS-3000 TMS-3000 TRUNK CELP CELP TRUNK PHONE 4-WIRE 4-WIRE PHONE 036R480DA NOTE...
  • Page 60 This network has 2-wire elements at each end. The elements may be Point-to-Point telephone instruments, 2-wire electronic Key Systems or older 2-wire Connection Using relay PBXs. Hybrids convert the 2-wire interfaces to 4-wire. Hybrids TMS-3000 TMS-3000 TRUNK TRUNK PHONE PHONE...
  • Page 61 APPENDIX D A typical dealer desk application is shown in the following diagram. The Dealer Desks design of these vary in detail. The Selector switch selects between phone (Hoot ‘n Holler and hoot 'n holler box. Note that two hybrids may exist in a single voice Boxes, Hybrids and circuit.
  • Page 62 APPENDIX D A TYPICAL BRIDGED CONFERENCE CIRCUIT LINK 1 LINK 3 BRIDGE 1 BRIDGE 4 BRIDGE 2 STATION 2-1 STATION 4-1 STATION 1-1 STATION 4-2 STATION 1-2 STATION 1-3 LINK 2 BRIDGE 3 STATION 3-1 STATION 3-2 STATION 3-3 A 4-PORT (4-WIRE) ANALOG BRIDGING CIRCUIT PORT 1 PORT 2 (4-WIRE)
  • Page 63 APPENDIX D This section contains information to allow you to adjust the voice levels DETAILED of the circuit. If the terms which are used in this section are unfamiliar, PROCEDURES refer to the detailed explanations of these terms which are provided earlier in this appendix.
  • Page 64 APPENDIX D may need to select the +7 dBm output level from the CELP and attenuate the VF signal appropriately. Steps for the alignment of 4-WIRE CIRCUITS 1. Identify the test point for alignment from the Loss Plan. If a loss plan is not already in place, it is necessary to compile one prior to alignment.
  • Page 65 APPENDIX D rangement). Each station handsets should be used adjacent to the speaker which is muted by its “press to talk’’ button. Other live speakers connected to the same network may provide a feedback path (an echo). In any network it is necessary that you put into place a Loss Plan. A Loss Loss Plan Plan is the design of the TLPs in the network.
  • Page 66 APPENDIX D NOTE Since we are using 4-wire telephones with internal gain sec- tions, we could just as easily have added the +1 dB of gain in the telephone, and left the CELP gain sections alone. This concept of a Loss Plan can be applied to networks which vary from the very simple, as in the above example, to the most complex networks.
  • Page 67 APPENDIX D ERL at the CODEC is the receive level at TLP minus the transmit level at TLP. To obtain this level as previously discussed subtract the TLP from the level (in dBm). The 6 dB Rule for the CELP states that in order for the built in echo can- celler to function, the ERL at the CODEC shall be 6 dB or greater.
  • Page 68 APPENDIX D tion since decreasing the ERL by only one or two dB might render the echo canceller inoperative. The switches in DIP switch S1 may be used in any combination. CELP Level Refer to Section 2 of this manual. Adjustments ON OUTPUT LEVEL +7 dBm.
  • Page 69 APPENDIX D D-17...
  • Page 71 APPENDIX E CELP MODULE CONNECTOR PIN ASSIGNMENTS TABLE 1. CELP VOICE CHANNEL MODULE CONNECTOR PIN ASSIGNMENTS, CARD EDGE INTERFACE, P1 Pin No. Signal Name *Direction Description CHASSIS GROUND AF ROW SEL When AF ROW SEL and AF COL SEL are both low, then RESP 1-4 are enabled.
  • Page 72 APPENDIX E TABLE 1. CELP VOICE CHANNEL MODULE CONNECTOR PIN ASSIGNMENTS, CARD EDGE INTERFACE, P1 (Cont.) Pin No. Signal Name *Direction Description M-LEAD Pulse signal input to the CELP Voice Channel Module drives the M-lead sensor circuit. + 12 V dc Positive 12-volt power supply.
  • Page 73 APPENDIX E TABLE 2. CELP VOICE CHANNEL MODULE CONNECTOR PIN ASSIGNMENTS, DB-25 OUTPUT CONNECTOR Pin No. Signal Name Description CHASSIS GROUND — - BATTERY (INPUT) –12 V dc to –48 V dc voltage supply for types II, III, IV and V M-Lead interface.

  • Page 75: Appendix Fglossary

    APPENDIX F GLOSSARY Aggregate Control This module interfaces the 16.896 MHz Fast Bus with a full duplex aggregate Module trunk connected to a remote node. It buffers data from the Fast Bus and reforms it according to the transmit frame by adding overhead and frame sync bits. Piggy- back Cards on board the Aggregate Control Module then prepare the data to comply with transmission standards (EIA or CCITT).
  • Page 76 APPENDIX F A generic term for any module that, when removed, will cause a major alarm. Common Module This includes all modules housed in the main shelf plus the Expansion Modules located on each Expansion Shelf. See MP bus. Communications Bus Data characters that are sent serially along with data.
  • Page 77 Any addressable location within a network capable of carrying a TMS-3000, TMS Node Compact, Univ. MM+ V4 or MINIMUX TDM circuit. In a network, a TMS-3000 in Philadelphia or a Univ. MM+ V4 in Boston are nodes. A card that plugs into a base card. The piggyback is a separate assembly that can Piggyback Card be tested, removed, and replaced as a unit.
  • Page 79 Alternating ones and zeroes pattern, 5-1 Loopback ADN, 1-1 local, 5-1 Applications, Appendix B remote, 5-1 ASDS (FT-1), 1-1 TMS-3000 controller, 1-2 CCITT fax signals, 1-1, 2-4 M-lead signaling interface CELP voice channel module diagrams, 2-5, Appendix C applications, appendix B MF tone, 4-2...
  • Page 80 PATENT NOTICE ANALOOP is a patented method and apparatus of General DataComm, Inc. ® (U.S. Patent 3,655,915). DATALOOP is a patented method and apparatus of General DataComm, Inc. ® (U.S. Patent 3,769,454). TRADEMARK NOTICE ® and the following are Trademarks of General DataComm, Inc.

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