We are terminating analog 1FB lines into a 2821 router with a 4-port FXO module at our remote sites. Our previous standard practice was to have these 1FB lines dedicated for our fax machines and dial-up modems. We are starting to implement SRST at our remote sites and would like to also utilize these 1FB lines for fallback for our Cisco IP phones. We have successfully configured SRST using the FXO ports to place outgoing calls via the 1FB lines when we lose WAN connectivity.
We are now trying to terminate the fax and dial-up modem devices in the FXS module on the 2821 router. Our problem is how to configure dial peers for incoming calls for these analog devices. (We also will need to set up dial peers for the outgoing fax calls, too).
We are assuming we need to set up incoming dial peers that take the calls in from the 1FB's (PSTN) and have outgoing dial peers destined for a specific analog device (fax or modem).
This is an example of a config we have tried:
dial-peer voice 102 pots
incoming called-number 3996156
port 0/1/0
dial-peer voice 202 pots
destination-pattern 3996156
port 0/2/0
where 3996156 is the local number called (less the area code) for the 1FB line, port 0/1/0 is the FXO port (1FB) and port 0/2/0 is the FXS port (modem).
All we get is a single ring and then a disconnect.
