Interesting situation I'm running into. I have a SIP trunk from bandwidth.com coming into a CUBE and then from there to CUCM 8 via h.323. I also have FXO on the same h.323 gateway and those calls are all working perfectly. When a call comes into the SIP DID, it goes to CCM just fine and the call quality is decent. However, when I put the call on hold from the IP Phone (7970, SCCP), the PSTN caller hears MoH and that's fine. When I take the call off hold, the call still shows as being "connected" on the IP Phone display but there is no audio. After a few seconds the call disconnects. Any ideas why this would happen? I'm stymied. Thanks in advance. Also, any ccsip debugging or diag info that would assist, please let me know what would help and I'll supply it as attachments. Thanks again.
midcall-signaling passthru was integrated in 12.4(20)T, so you will need to upgrade to use this command.
Please upgrade and add the command and test. If the issue persists, it would tell us more if you could grab 'debug ccsip mess' during the issue.
Can you please add this line to the Configuration on the Cube
voice service voip
allow-connections h323 to h323
allow-connections h323 to sip
allow-connections sip to h323
allow-connections sip to sip
no h225 timeout keepalive
no call service stop
Please test the call and let me know.