[cisco-voip] Routing calls from PRI inbound MGCP to outbound MGCP T1 CAS

[Wydra, Jason]

Hello - I am trying to place an inbound call into a 2851 using a MGCP controlled PRI. When this call gets to CCM, I have a translation pattern that translates the called number to a 4 digit extension on my legacy IVR. The 4 digit extension is then sent out a H323 controlled T1 CAS trunk on the same 2851. I can see the call go through when I call the number from my cell phone. It seizes a PRI channel and a CAS channel. I hear 1 ring from the IVR and then the call disconnects. I can see on the IVR GUI that a channel is also seized and it starts to play a greeting. I don't believe the IVR is hanging up because I lose my connection while I still see the IVR playing a greeting. Any thoughts on how I can fix this?
 
Thanks,
Jason