AT&T DEFINITY 555-230-223 - Manual (Page 40)

Installation
Task 7B: Install a Terminal via Modems
This task describes how to connect a terminal via a modem to Admin/Port B of
the MFB. (This task can also be used for remote connection to the TN2170
RS-232 connector.)
To make sure the modems that you are installing are on the list of supported
peripherals, see Appendix B, ‘‘Supported Terminals and Modems/Option
Settings.’’
Refer to Figure 2-10, Connecting a Terminal to the MFB via Modem, when
performing this task.
GROUP 311
CABLE
SWITCH
ALARM
BOARD
MFB
Y-CABLE
ADMIN/
MAIN/
MULTI-
BOARD
FUNCTION
ALB
CABLE
MODEM
(SEE NOTE)
NOTE: NULL MODEM IS REQUIRED WHEN
DIAL-UP
TERMINAL
MODEM
TIP/
RING
PORT B
PORT A
CONNECTING TO 715 BCT DCE PORT
OPTIONAL
PRINTER
RS232
TN2170
RS-232 CONNECTOR
Figure 2-10. Connecting a Terminal to the MFB via Modem
1. In the room where the switch and DEFINITY LAN Gateway system are
located, place one modem between the DEFINITY LAN Gateway system
and a telephone jack, close enough to each that the cables can easily
reach. Also make sure the modem is within reach of a power outlet.
2. Connect the modem to Admin/Port B of the DEFINITY LAN Gateway
system Multi-Function Board.
a. Attach one end of one of the ED-1E434 Group 311 cables to the
RS-232 connector labeled Admin/Port B on the MFB Y-cable (the
one connected to the fourth slot of the five system slots). Attach the
other end to the female 25-pin connector on the modem.
b. Attach the connector on one end of a modular cord to the modem,
and attach the other connector to a telephone outlet.
Issue 1 January 1996 2-21