ATT DEFINITY Communications System Generic 3 Planning And Configuration Instructions Manual

							HARDWARE AND SOFTWARE DETERMINATIONaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Modular Trunk Data Module (MTDM)
The MTDM provides an EIA-232C DTE interface for  connection to off-premises  (out-of-building)
private-line trunk facilities or a switched telecommunications network, and a DCP interface for
connection to the switch.  The MTDM may also serve as part of a conversion resource for
modem pooling.  The MTDM is also used to interface with DCE-type multiplexers.
Modular Processor Data Module (MPDM)
The MPDM provides a DCE asynchronous or synchronous interface for connection to data termi-
nals, CDR output devices, Manager I or G3r-MT terminals, on-premises (in-building) administra-
tion terminals, and host computers.
The MPDM can be preset in the factory to provide the following interfaces:  EIA-232C, RS-449,
V.35, and RS-366 to support ACU (Automatic Calling Unit)-type dialing.
The MPDM can be configured to support the Data Call Setup or Off-Premises  Data-Only Exten-
sion feature.  The MPDM also supports data rates of 56 and 64 kbps for downloading and other
high-speed data transfer requirements.
7400A Data Module
The 7400A Data Module may be used instead of an MTDM when supporting the combined
Modem Pooling feature.  The 7400A Data Module supports asynchronous operation and provides
a DCP interface to the switch and an EIA-232C interface to the associated modem.
7400B Data Module
The 7400B Data Module supports asynchronous data communications and can operate in the
stand-alone mode for data-only service or in the linked mode, which provides simultaneous voice
and data service (acts like a DTDM).  The 7400B provides voice and data communications to
7400D-series voice terminals and the 602A1 CallMaster voice terminal that have a connection to
a data terminal or personal computer.  The 7400B integrates data and voice into the DCP proto-
col required to interface to the switch via a port on a Digital Line circuit pack.  The 7400B may be
used instead of an MPDM when asynchronous operation at speeds of 19.2 kbps or less is
required to provide a DCP interface to the switch for data terminals, printers, etc.  The 7400B
does not support synchronous operation and keyboard dialing.
7500B Data Module
The 7500B Data Module supports synchronous or asynchronous communications and can
operate in the stand-alone mode for data-only service or in linked mode, which provides simul-
taneous voice and data service.  The 7500B provides voice and data service to 7500-series voice
terminals and the 8503T voice terminal. The 7500B integrates data and voice into the ISDN pro-
tocol required to interface to the switch via a port on the BRI circuit pack.  The 7500B may be
used instead of an Asnynchronous Data Module (ADM) when synchronous operations at speeds
of up to 64 kbps are required.
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3270 Data Module
The 3270 Data Module provides a Category A coaxial DCE interface for connection to 3270-type
data terminals or a cluster controller.  It also provides a DCP interface connection to the digital
switch.
The 3270 is available in the following three models:
d3270T (Terminal)ÐConnects to a Category A 3270-type terminal, such as the  3278 Infor-
mation Delivery System.  The 3270T Data Module must connect through the digital switch
to a 3270C (Controller) Data Module.
d3270A (Asynchronous)ÐProvides the same function as the 3270T Data Module.  It also
allows the 3270-type terminal to emulate a Digital Equipment Corporation VT 100 or an
AT&T asynchronous terminal.
d3270C (Controller)ÐConnects an IBMÒ3274 or 3276 cluster controller to the digital
switchÒ.  A 3270C Data Module can contain up to eight ports.
Z3A Asynchronous Data Unit (ADU)
The Z3A ADU is a DCE-type device that allows direct connection between EIA-232C equipment
and the TN726 Data Line circuit pack. The ADU can handle standard data rates from 300 to
19,200 bps, asynchronous, full duplex only.
The ADU is used when the DTE is located more than 50 feet from the Data Line circuit pack and
is installed with the DTE.  An optional originate or disconnect switch may be used with the ADU.
Pooled Modem
Modem pools may reduce the number of modems and may also reduce the number of dial-up
facilities needed for data transmissions.  The integrated and external modem pools can handle up
to 32 simultaneous data calls per group in up to 5 groups.  Integrated modem pools can operate
at speeds of 300, 1200, and 2400 bps.  Combined modem pools (external modem pools) can
operate at speeds up to 19.2 kbps.
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Data Communications Adjuncts
Adjunct equipment may be connected to the switch without any unique switched-based call pro-
cessing, administration, or maintenance capabilities.  In addition to the Z3A Message Waiting
Indicator, DEFINITY Generic 1 and Generic 3 can support the following adjuncts:
dEIA terminal such as the 4410 BCT (TTY 5410) and 4415 (TTY 5420)
dPersonal computers, such as the AT&T PC 6300, PC 7300, PC 6312, or 6386 Work-
Group System (WGS)
dHORIZONÒcommunications system, MERLINÒcommunications system, and Informa-
tion Systems Network (local area network) switching systems
dTwo multiplexers, the Channel Expansion Multiplexer (which doubles the channel capa-
city of a DS1 facility to 44 voice band channels) and the Channel Division Multiplexer
(which provides non-switched private line connections over DS1 facilities)
dProtocol converters to allow ASCII  terminals and personal computers to communicate
with SNA/SDLC IBM computer and bisynchronous networks, thus protecting investments
in existing low-cost terminals as data networks grow or are integrated and as protocols
change
dCONVERSANT Voice Information System, AT&Ts voice response unit offering
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513
BCT
HOST
COMPUTER
BCT500
515 BCTSSI
RS-232
RS-232
RS-232 PROTOCOL
CONVERTER
DIGITAL LINE CP
DIGITAL
LINE CP
DIGITAL
LINE CP
DATA
TERMINAL
EQUIPMENT
HOST
COMPUTER
OR DATA
SERVICE
UNIT
OR DATA
SERVICE
UNITMODEMMODEM
PART OF DIGITAL SWITCH
DIGITAL
LINE CP
DIGITAL
LINE CP 3270A OR
3270T
DATA
MODULE
3270C
DATA
MODULE CATEGORY 1
COAXIAL
CATEGORY 1
COAXIAL3270-TYPE
DATA
TERMINAL
CLUSTER
CONTROLLER HOST
COMPUTER
DCP
DCP
DCP DCPDCP
RS-232COR 510D
RS-232C
MPDM
MTDM
R
E
M
O
T
E
LINE CPANALOG MODEM DATA
TERMINAL
EQUIPMENTRS-232CTN742
DIGITAL
VOICE
TERMINAL 
WITH DATA
MODULE
TN754 OR
TN754B
TN754 OR
TN754B
TN754 OR
TN754B
TN754 OR
TN754B
TN754 OR
TN754B
FIGURE 2.  Data Endpoint (Terminal, Personal Computer, Host, and
Customer-Provided Equipment) Connections
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LINE CP
DATA
TERMINAL
EQUIPMENT
PART OF DIGITAL SWITCH
LINE CP MTDM
MODEMEIADCPDATA
ADUAIM
ADUINFORMATION
NETWORK
AIM INFORMATION
NETWORKADAPTER RS-232C
DCP
DCPPROTOCOL
CONVERTERFRONT
END
PROCESSORBISYNC OR
SVA HOST
COMBINED
MODEM
POOLDIGITAL
LINE CP DCP DCP DATA SERVICE
DCP MULTIPLEXER
DATA
SERVICE
FACILITIES LINE 
TO PRIVATE
FACILITIES LINE 
ANALOG
MPDM
MPDM MPDM MPDM UNIT OR MODEMMTDM
UNIT OR
MODEM
SYSTEMS
SYSTEMS
OR
7400A
DATA
MODULE TO PRIVATE
TN754 OR
TN754B
DIGITAL
LINE CP TN754 OR
TN754B
DIGITAL
LINE CP TN754 OR
TN754B
DIGITAL
LINE CP TN754 OR
TN754B
DIGITAL
LINE CP TN754 OR
TN754B
TN746 OR
TN746B TN726 OR
TN726B LINE CPDATA TN726 OR
TN726B
FIGURE 3.  Data Endpoint (EIA-232C) Connections
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Display Terminals and Printers
The DEFINITY Communications System Generic 1 and Generic 3 is compatible with terminals
and printers having EIA-232C or DCP interfaces.
System access for administration of DEFINITY Communications System Generic 1 and Generic
3 is performed by a Manager I terminal for G1 and G3i or G3r-MT for G3r, a Remote Administra-
tion terminal (that is, a Manager I or G3r-MT terminal that is more than 50 feet from the system
cabinet and uses a dial-up capability), or by an AT&T location.  System maintenance can be per-
formed from the Manager I or G3r-MT terminal or from an AT&T location.
The Manager I or G3r-MT terminal can be a 715 Business Communications Terminal (BCT), 615
Multi-Tasking Terminal (MT) with a 513 BCT emulation cartridge, 513 BCT, 515 BCT, 610 BCT,
4410 terminal, or 4425 terminal located within 50 feet of the system  cabinet.  A remote Manager I
or G3r-MT terminal requires the use of a modem to allow dial-up to the system.
Remote Administration
Remote Administration allows the system to be administered from a remote terminal located on
or off the customers premises.  A terminal located more than 50 feet from the system cabinet is
considered remote and can use a modem to dial-up the system.  If it is on-premises, a data
module or an ADU can be used in place of a modem.  The remote terminal performs the same
functions as the local Manager I or G3r-MT terminal.
The 513 BCT, 515 BCT, 610 BCT, 615 MT, 715 BCT, 4410 terminal, or 4425 terminal may be
used as the local (on-premises) Manager I or G3r-MT terminal or the remote terminal for DEFIN-
ITY Generic 1 and Generic 3 systems.  The 510D terminal can be used as an on-premises
remote terminal for all systems if it is connected directly to the switch or as an off-premises
remote terminal behind a remote G1 or G3 if modem pooling is used on the G1 or G3 that is
being dialed.
If the remote terminal is a 4410 terminal, 513 BCT, 610 BCT, 615 MT, or 715 BCT, it must  be
connected to the switch via a Processor Data Module (PDM), Digital Terminal Data Module
(DTDM), or Data Line circuit pack port.  If a 4425 terminal (with integrated modem) or 515 BCT is
used as a remote terminal, a PDM or DTDM is not required, but a System Access Port is
required for G3r.
Table J provides a listing of the system data terminals.
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TABLE J.  System Data Terminals
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Terminal/
(Protocol) Description Application
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
510D
(DCP)See DEFINITYÒCommunications
System Generic 1 and System 75 and
System 85 ÐTerminals and Adjuncts Ð
Reference
, 555-015-201.dExecutive Voice/Data Terminal
dRemote administration terminalbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
610 BCT
(EIA)See DEFINITYÒCommunications
System Generic 1 and System 75 and
System 85 ÐTerminals and Adjuncts Ð
Reference
, 555-015-201.dLocal (within 50 feet of system
cabinet) administration terminal
dGeneral purpose data terminalbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
615 MT
(EIA)See 615 Multi-Task Terminal Users Guide,
999-300-302.dLocal or remote (Manager I or
G3-MT) administration terminal
dGeneral purpose data terminal
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
715 BCS
(EIA)See 715 BCS Users Guide, 999-300-765.dLocal or remote (Manager I or
G3-MT) administration terminal
dGeneral purpose data terminal
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
513 BCT
(EIA)See DEFINITYÒCommunications
System Generic 1 and System 75 and
System 85 ÐTerminals and Adjuncts Ð
Reference
, 555-015-201.dRemote SAT (G1)
dGeneral purpose data terminalbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
515 BCT
(DCP/EIA)See DEFINITYÒCommunications
System Generic 1 and System 75 and
System 85 ÐTerminals and Adjuncts Ð
Reference
, 555-015-201.dExecutive Voice/Data Terminal
dRemote administration terminal
dGeneral purpose data terminalbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
4410 Display
Terminal
(EIA)See DEFINITYÒCommunications
System Generic 1 and System 75 and
System 85 ÐTerminals and Adjuncts Ð
Reference
, 555-015-201.dLocal or remote administration
terminal
dGeneral purpose data terminalbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
4425 Display
Terminal
(EIA)See DEFINITYÒCommunications
System Generic 1 and System 75 and
System 85 ÐTerminals and Adjuncts Ð
Reference
, 555-015-201.dLocal or remote administration
terminal
dGeneral purpose data terminalbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
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Table K provides a listing of the system printers and their typical applications.
TABLE K.  System Printers
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Printer Description Applicationbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
d132 Columns
dMatrix printer
dTractor feed
d30 characters per second (cps)
dDraft quality output
dSSI InterfaceProvides hard copy of data received
under the direction of a data communi -
cations processor or controller. 443
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
d132 Columns
dLine printer with tractor feed
d55 cps
dDraft quality output
d3 Interface options:
± EIA
± IBM computer
± CentronicsÒ
d96 Upper/Lower Case CharactersPrinting messages received on-line
from a Message Server or controller. 445
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
d10, 12, 15 char. per inch (variable)
dVertical line spacing 3/6/8 lines per inch
(variable)
dFull font printer
dDocument quality output
d5000 feet maximum distance from host
dSSI Interface
d45 cpsAuxiliary printer where document quality
is the primary consideration.  A slave
device (auxiliary only) to an applications
processor via an SSI data link. 450
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
460
and 572dMedium speed
dBidirectional
dDraft quality
dMatrix printer
dInterface options:
± EIA
± SSI
± IBM computer
dUp to 240 cps
d5000 feet maximum distance from hostPrints data received under direction of a
communications processor or controller
when copy quality is essential.
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb c c c c
c
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(continued on next page)
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TABLE K (continued).
System Printers
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Printer Description Applicationbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
dDesktop Dot Matrix
dDraft quality
d120 cps or 10 cps
dInterface Options:
± IBM computer
± CentronicsPrints data received under direction of a
communications processor or controller. 470
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
475
and 573dLetter quality matrix printer
d120 cps or 10 cps
dBidirectional
dEIA Interface
d50 feet maximum distance from hostInterface to a printer system.  Prints
under the direction of a communications
processor or controller.  May be used
as the System Printer in support of the
Report Scheduler feature.
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Distributed Communications System (DCS)
Distributed Communications System (DCS) allows two or more switches to provide transparency
for certain attendant and voice terminal features as if the cluster were a single large switch.  DCS
simplifies dialing procedures between locations and allows the use of some of the systems
features between locations.  To clarify this further, if you have two switches in the same company
that are networked together but do not have DCS, if a call from one display terminal is made to
another display terminal, the terminal receiving the call displays only the trunk line over which the
call was placed.  If the switches have DCS, however, the extension from which the call is made
appears.  Another example is that the Leave Word Calling button can be used where two
switches have DCS.  Figure 4 shows how the DCS can be connected to the system.
For detailed information on how to add DCS to a system,  see 
DEFINITYÒCommunications Sys-
tem Generic 1 and Generic 3iÐUpgrades and Additions, 
555-204-106 or DEFINITYÒCommuni-
cations System Generic 3rÐUpgrades and Additions, 
555-230-106.
65