Download File - Performance Communications

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Connecting a system terminal or modem
Page 189 of 436
Figure 74
Modem to a switch box and SDI and COM2 ports (dual-column systems)
RJ11
jack
Smart mode
modem
Modem cable
(or NT8D46)
Public phone
network
Terminal
RS-232
cable
Remote end
SDI port on
I/O panel
Network module
J21 on
I/O panel
J21 on
I/O panel
Core/Net 1
Core/Net 0
NT8D95
cables
Rear View
Switch box
RJ11
jack
Modem cable
(or NT8D46)
NT8D95
cable
NT8D95 cable
Dumb mode modem
Note: The A0377992 switch box and A0381391 modem can be used in this configuration.
553-A0137
Large System Installation and Commissioning