CME on 2951 and Avaya IP Office. PRI stream. Problems with RTP.
Schama is: [ГТС] --PRI-- [Cisco2951,CME] --GRE Tunnel-- [Cisco 891] --LAN-- [Avaya IPO] There is a SIP Trunk Between CME and Avaya
dial-peer voice 1000 voip description -= PSTN to Call Center | HQ CUCM1 =- translation-profile incoming CCToPSTN_tp translation-profile outgoing PSTNtoCC_tp destination-pattern 0*******80 session protocol sipv2 session target ipv4:192.168.100.54 voice-class codec 2 voice-class sip bind control source-interface Loopback0 voice-class sip bind media source-interface Loopback0
Beyond Avaya are Twinkle softphones.
Call to the PSTN number received from PRI goes to Avaya IP office through the SIP Trunnk and then to the huntgroup of softphones. Problem is that aperodically voice is missed sometimes to one side sometimes to another one.
I haven't access to Avaya, but we can ask admin for some information if needed.
Debug on Cisco permanently floods following:
deb voice rtp error Dec 5 14:29:33.461: voip_rtp_get_gccb:Error, no gccb for callID:11828 Dec 5 14:29:33.461: voip_rtp_get_gccb:Error, no gccb for callID:11828 Dec 5 14:29:33.461: voip_rtp_get_gccb:Error, no gccb for callID:11828 Dec 5 14:29:33.461: voip_rtp_get_gccb:Error, no gccb for callID:11828 Dec 5 14:29:33.461: voip_rtp_get_gccb:Error, no gccb for callID:11828 Dec 5 14:29:33.461: voip_rtp_get_gccb:Error, invalid callID:-1
Dec 5 14:29:35.453: voip_rtp_set_non_rtp_call: ERROR - already in required mode; returning
And sometimes this (probably these are those calls without voice)
deb voice call trap Dec 5 14:38:03.005: Potential Mute Call: Dec 5 14:38:03.005: CallID1=12006; CallID2=12007; ConfID=5278 Dec 5 14:38:03.005: Leg 1: CallID=12006; TX packets: 97; RX packets: 0 Dec 5 14:38:03.005: Leg 2: CallID=12007; TX packets: 0; RX packets: 98
During packet analyse on a softphone I disovered, that ICMP-message from Avaya comes about udp-port unreachable (and then no voice).
Then I looked to CME and saw that such messages CME sends to Avaya
Dec 5 14:41:16.778: ICMP: dst (10.38.255.255) port unreachable sent to 192.168.100.54
I set codec 711alaw hardly to avoid transcoding
Where to dig? What to debug? And what in fact it could be?
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The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.