Communication Server Large System Installation and Commissioning

Connecting a system terminal or modem Page 183 of 456
Communication Server 1000M and Meridian 1 Large System Installation and Commissioning
Figure 72
Modem to SDI port
Connecting a modem to switch box, COM2 ports, SDI ports
Use Procedure 23 to connect SDI and COM2 ports to a switch box and a
modem (see Figure 73 on page 185 and Figure 74 on page 186).
Procedure 23
Connecting a modem to a switch box, COM2 and SDI ports
1 At the remote end, connect an RS-232 cable to the terminal and to the
modem.
2 At the remote end, connect the cable from the modem to an RJ11
telephone jack. If a cable is required, connect an NT8D46 cable to the
modem and to the RJ11 jack.
Rear View
553-A0136
Dumb mode
modem
NT8D95
cable
Remote end
SDI port on
I/O panel
RJ11
jack
Smart mode
modem
RJ11
jack
RS-232
cable
Modem cable
(or NT8D46)
Modem cable
(or NT8D46)
Note: The A0381391 modem can be used in this configuration.
Terminal
Network module
Public phone
network