Having issue with H.323 Voice gateway. Incoming calls on PRI are not transfered to Auto-Attendant. This happens randomly but I have noticed that the frequency is higher when there are no incoming call no PRI lines. Please check Q921 and Q931 debugs in attachments. The calls seems to be answered by gateway but ISDN-Connect message is never displayed. I tried to call from my IP Phone to PRI but no ISDN-Connect message for this call but the call is landed on gateway. Running CCM 4.2(3), IPCC Express 4.0(4), IOS adv ip sevices 12.4(8).
I also tried from an outside number as well but the results are same.
Another questions is that: we can run both MGCP and H.323 on voice gateway but how will it register with CallManager. I guess we can use some loopback technique for this purpose.
Anyone expreienced something like this before. Need suggestions/comments!