
Installing plug-in modules
9.8 Installing plug-in modules
2 modems (PSTN or GSM) may be installed on the controller board to increase
functionality. The picture below shows the 2 slots available for each modem, the
primary (left) slot and the back-up (right) slot.
If both modem slots are available, always install the plug-in module in the primary
slot; the system always attempts to make PSTN or GSM calls on a modem
installed on the primary slot before attempting to use the back-up slot.
Plug-in modules
For installation please refer to the corresponding Installation Instruction.
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