I'm working on getting a SIP trunk with an ITSP fully functional. I can get basic calls ok but Unicast MOH is not working out - no audio. Going off-hold i get the call audio back.
Quick packet cap on the CUBE confirms i'm getting MOH packets from CUCM but they don't make it across CUBE out to the SP. For the re-INVITE to get the music audio, CUCM is sending SDP with: m=audio 4000 RTP/AVP 0 >From the packet cap, the audio packets are not being sourced from port 4000 - they are coming in from ephemeral ports. Could this be causing an issue with CUBE not translating the streams? The reason I ask is that I noticed a bug out there CSCtb32219 <https://www.cisco.com/cisco/psn/bssprt/bss?searchType=bstbugidsearch&page=bstBugDetail&BugID=CSCtb32219> for ASR1K which seems close, in my case this is a 4431 (Also ios-xe) running 15.5(1)S. Anyone run into that? The workaround is to enable duplex streaming in CUCM, which seems a little goofy. I dont feel like I have anything special configured on CUBE: voice service voip ip address trusted list ipv4 blahblahblah address-hiding allow-connections sip to sip no supplementary-service sip refer fax protocol pass-through g711ulaw sip pass-thru content sdp sip-profiles 100 ! dialpeers all have ! dtmf-relay rtp-nte codec g711ulaw no vad Thanks! -- Ed Leatherman
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