Hi,
I have below setup.
ISP PRI >> Cisco Voice Router >> CUCM >> FreePBX.
All my did are on Cisco voice router and cucm is connected to voice router via h323. my cucm is using 4 digit dialing. All calls to the pstn are passed by cucm to voice router and user has to use 9 as access code for outside line and the voice router manipulates it to did as per isp requirments. similarly on incoming calls from pstn 4 digit number is passed to cucm which matches last 4 digits of dialed number.
Now i have Freepbx at remote site and it has its own set of 3 digit dialing.A sip trunk is in place between cucm and freepbx and calling is working fine between these sites.
Now i want to map a DID to those 3 digit numbers registered on phones behind Freepbx for incoming and outgoing calling. that remtoe site has access code of 4 when reaching it from cucm registered phone. and that site is not using any access code to reach the extensions behind cucm.
For incoming calls form PSTN i have translation pattern which translates the called number to 4.xxx where xxx is specific extension and rmeote site behind freepbx. this is working fine. and for each DID i have to put a translation pattern as the numbers at freepbx site are not in sequnce and not all numbers behind freepbx are assigned a DID.
I am trying to figure out how to make all outgoing calls from freepbx to the pstn via the cucm route correctly using proper outgoing DID ?
What can i use in cucm that when i recive a call to pstn from 3 digit ext behind freepbx being translated to a 4 digit number as my router will do remaining pstn formating. I just need to convert the 3 digit number behind the freepbx to a 4 digit number in the numbers range assinged to us by isp.
Thanks a lot for guidance.
