ok - now we are making progress.
One critical question here - when you call inside - one IP phone to another IP phone, do you dial 6 digits?
If the answer is yes
for incoming calls create a dial peer on the GW that looks something like this:
dial-peer voice 1111 pots
destination-pattern
port 0/1/0
That should be all you need to catch the incoming calls to the fax
If the answer is no:
for incoming calls create the same dial peer on the GW that looks something like this but with the shorter DN:
dial-peer voice 1111 pots
destination-pattern
port 0/1/0
Additrionally create a route pattern in CCM for that DN pointing to the route list that handles your PSTN calls so that calls to the fax will go back to the GW and the GW will handle it from there.
For your outbound calls from the fax you can go one of two ways.
You already have all the dial peers you need to route the call out on the GW, so if staff dials the number 82123456 the gateway should match DP 4 and send the call out without involving CCM.
If you must have the outbound fax calls go through the CCM, say for CDR, you will need to prefix the outbound numbers and ship them to CCM, which will remove the prefix and then send them back to the gateway as a normal PSTN call. So you need to add another "special" DP pointed to CCM, then a route pattern in CCM that matches that number to strip the prefix and send it back out to the GW.
If you must do the second, be careful - there is potential for a loop here, and although CCM has the capabilities to detect and shut one down you don't want to go there.
HTH,
Art
