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Connecting a modem to switch box, COM2 ports, SDI ports
Connecting a system terminal or modem
Figure 73
Modem to SDI port
Smart mode
RJ11
jack
Modem cable
(or NT8D46)
Public phone
network
RJ11
Dumb mode
jack
Modem cable
(or NT8D46)
Note: The A0381391 modem can be used in this configuration.
Use Procedure 23 to connect SDI and COM2 ports to a switch box and a
modem (see Figure 74 on
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.
modem
RS-232
Remote end
cable
SDI port on
modem
I/O panel
Network module
NT8D95
cable
page 189
and Figure 75 on
Large System Installation and Commissioning
Page 187 of 436
Terminal
Rear View
553-A0136
page
190).
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