PSTN (xx1000-xx2999 DID)->E1 R2-> PBX-> extensions (1000-2999)
PSTN (xx1000-xx2999 DID)->E1 R2 -> C3845->E1 R2-> PBX -> extensions (1000-2000)
PSTN (xx1000-xx2999 DID)->E1 R2 ->C3845->GigabitEthernet->CUCM 7.0->extensions (2000-2999)
I want to migrate extensions 2000 to 2999 from PBX to IP Telephony.The PBX knows just E1 CAS R2 signalling.I put the router C3845 between PSTN and PBX but i know that CUCM 7.0 not support E1 CAS R2 signalling and is not possible to control E1 R2 interfaces on router C3845.
How i can make this migration?
Any suggestions? Any configuration example?