I have the following setup, both routers are Cisco 2811, I am trying to simulate PSTN on one routerB running CME and routerA is an MGCP GW controller by CUCM5. When placing a call from RouterA to RouterB the call goes through fine but when a call is placed from Router B to routerA the call doesn't go through, basically as soon as I dial the number the phone hangs up. I have done debug isdn q931 and getting the disconnect message not sure why.
RouterA ===== Fractional PRI ====RouterB "PSTN SIMULATOR"
*Aug 28 12:46:41.830: ISDN Se0/1/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x1, Calling num 14085556666
*Aug 28 12:46:41.834: ISDN Se0/1/0:15 Q931: Applying typeplan for sw-type 0x12 is 0x0 0x1, Called num 4085551001
*Aug 28 12:46:41.834: ISDN Se0/1/0:15 Q931: TX -> SETUP pd = 8 callref = 0x0094
Bearer Capability i = 0x8090A3
Standard = CCITT
Transfer Capability = Speech
Transfer Mode = Circuit
Transfer Rate = 64 kbit/s
Channel ID i = 0xA98381
Exclusive, Channel 1
Progress Ind i = 0x8183 - Origination address is non-ISDN
Calling Party Number i = 0x0180, '14085556666'
Called Party Number i = 0x81, '4085551001'
*Aug 28 12:46:41.854: ISDN Se0/1/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x8094
Cause i = 0x8080 - Unknown cause value