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Cisco Bug: CSCvs25172 - Nortel Phones are unable to hear full greeting due to RTP port change.

Last Modified

Aug 26, 2020

Products (1)

  • Cisco Unity Connection

Known Affected Releases

11.5

Description (partial)

Symptom:
Nortel Phones are unable to hear full greeting. user will hear greeting only for 1-2 seconds .

Conditions:
Issue happens due to re-invite sent by Nortel phones to change RTP port after the call is established.

============================================================

>>In First INVITE, CUCM sends nortal Endpoint IP c=IN IP4 10.67.0.134  & RTP port 30606 RTP/AVP 0 8 101
 
>>In re-invite The CUCM send endpoint IP as 0.0.0.0 for holding the Media
 
>>In 200Ok Outgoing SIP , Unity Connection sends IP 0.0.0.0 to make audio on hold .
 
>>In Third Invite CUCM send another Invite adding valid endpoint IP ( i.e 10.67.0.134 ) with change in RTP audioport i.e (31884) .

22:18:38.511 |32016,,,MiuSIPStack,10,Received from source addr-10.25.34.21 on TCP
22:18:38.511 |32016,,,MiuSIPStack,11,Incoming Sip Message<-- INVITE sip:3584800@10.26.34.70:5060;transport=tcp SIP/2.0
22:18:38.511 |32016,,,MiuSIPStack,11,                        Via: SIP/2.0/TCP 10.25.34.21:5060;branch=z9hG4bK8c4b217aabdc0
22:18:38.511 |32016,,,MiuSIPStack,11,                        From: <sip:6106842963@10.25.34.21>;tag=548614~5ff0c42d-8b65-4834-bd27-7efebf6d1698-57973823
22:18:38.511 |32016,,,MiuSIPStack,11,                        To: <sip:3584800@10.26.34.70>;tag=74a0fdc718cb43d2b0c5309eb2a76e3b
22:18:38.511 |32016,,,MiuSIPStack,11,                        Date: Tue, 15 Oct 2019 02:18:38 GMT
22:18:38.511 |32016,,,MiuSIPStack,11,                        Call-ID: 1728c200-da512c7d-442f0-1522190a@10.25.34.21
22:18:38.511 |32016,,,MiuSIPStack,11,                        Supported: timer,resource-priority,replaces
22:18:38.511 |32016,,,MiuSIPStack,11,                        User-Agent: Cisco-CUCM11.5
22:18:38.511 |32016,,,MiuSIPStack,11,                        Allow: INVITE, OPTIONS, INFO, BYE, CANCEL, ACK, PRACK, UPDATE, REFER, SUBSCRIBE, NOTIFY
22:18:38.511 |32016,,,MiuSIPStack,11,                        CSeq: 103 INVITE
22:18:38.511 |32016,,,MiuSIPStack,11,                        Max-Forwards: 70
22:18:38.511 |32016,,,MiuSIPStack,11,                        Expires: 180
22:18:38.511 |32016,,,MiuSIPStack,11,                        Allow-Events: presence
22:18:38.512 |32016,,,MiuSIPStack,11,                        Session-ID: a69ec935ebd3e21f38043ceeab427768;remote=3fd25ed0470c2d4a8683cdcaab548614
22:18:38.512 |32016,,,MiuSIPStack,11,                        Call-Info: <urn:x-cisco-remotecc:callinfo>;x-cisco-loc-id=7ee5e7e6-db95-2c6a-a7fb-f73de90854d8;x-cisco-loc-name=4002-Wanamaker_L;x-cisco-fateshare-id=CHOP-Enterprise-9.x:101315194;x-cisco-video-traffic-class=MIXED
22:18:38.512 |32016,,,MiuSIPStack,11,                        Supported: X-cisco-srtp-fallback
22:18:38.512 |32016,,,MiuSIPStack,11,                        Supported: Geolocation
22:18:38.512 |32016,,,MiuSIPStack,11,                        Min-SE:  1800
22:18:38.512 |32016,,,MiuSIPStack,11,                        P-Asserted-Identity: <sip:6106842963@10.25.34.21>
22:18:38.512 |32016,,,MiuSIPStack,11,                        Remote-Party-ID: <sip:6106842963@10.25.34.21>;party=calling;screen=yes;privacy=off
22:18:38.512 |32016,,,MiuSIPStack,11,                        Contact: <sip:6106842963@10.25.34.21:5060;transport=tcp>
22:18:38.512 |32016,,,MiuSIPStack,11,                        Content-Type: application/sdp
22:18:38.512 |32016,,,MiuSIPStack,11,                        Content-Length: 247
22:18:38.512 |32016,,,MiuSIPStack,11,                        v=0
22:18:38.512 |32016,,,MiuSIPStack,11,                        o=CiscoSystemsCCM-SIP 548614 3 IN IP4 10.25.34.21
22:18:38.512 |32016,,,MiuSIPStack,11,                        s=SIP Call
22:18:38.512 |32016,,,MiuSIPStack,11,                        c=IN IP4 10.67.0.134  >>> CUCM sending valid  endpoint IP
22:18:38.512 |32016,,,MiuSIPStack,11,                        b=TIAS:64000
22:18:38.512 |32016,,,MiuSIPStack,11,                        b=AS:64
22:18:38.512 |32016,,,MiuSIPStack,11,                        t=0 0
22:18:38.512 |32016,,,MiuSIPStack,11,                        m=audio 31884 RTP/AVP 0 8 101  >> But change in audio port of end-point
22:18:38.512 |32016,,,MiuSIPStack,11,                        a=rtpmap:0 PCMU/8000
22:18:38.512 |32016,,,MiuSIPStack,11,                        a=rtpmap:8 PCMA/8000
22:18:38.512 |32016,,,MiuSIPStack,11,                        a=rtpmap:101 telephone-event/8000
22:18:38.512 |32016,,,MiuSIPStack,11,                        a=fmtp:101 0-15
22:18:38.513 |32016,,,MiuSIPStack,10,CSipMessage::AddSupported(timer) ? added
 

>>But Unity Connection sending invalid IP at Conversation level ( sending Its IP as 0.0.0.0 ) in the part of 200OK Outgoing SIP , due to which it is not playing greeting on Endpoint (i.e Nortel phone ) .
 
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,Outgoing Sip Message--> SIP/2.0 200 OK
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        From: <sip:6106842963@10.25.34.21>;tag=548614~5ff0c42d-8b65-4834-bd27-7efebf6d1698-57973823
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        To: <sip:3584800@10.26.34.70>;tag=74a0fdc718cb43d2b0c5309eb2a76e3b
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Via: SIP/2.0/TCP 10.25.34.21:5060;branch=z9hG4bK8c4b217aabdc0
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Contact: <sip:3584800@10.26.34.70:5060;transport=tcp>;automata
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Expires: 180
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Call-ID: 1728c200-da512c7d-442f0-1522190a@10.25.34.21
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        CSeq: 103 INVITE
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Allow-Events: kpml
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Allow: ACK,BYE,CANCEL,INVITE,NOTIFY,OPTIONS,REFER,REGISTER,SUBSCRIBE
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Content-Length: 232
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        Content-Type: application/sdp
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        v=0
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        o=CiscoSystemsUCXN 3442854673 3442854676 IN IP4 10.26.34.70
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        s=No Subject
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        c=IN IP4 0.0.0.0  >> Unity Connection sending Invalid IP
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        t=0 0
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        m=audio 18548 RTP/AVP 0 101  >>>> Unity connection didn't change its audio Port
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        a=rtpmap:0 PCMU/8000
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        a=ptime:0
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        a=rtpmap:101 telephone-event/8000
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        a=fmtp:101 0-15
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,11,                        a=sendrecv
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,10,GetSocket: Searching for Socket Pair (10.25.34.21:4237).
22:18:38.515 |21782,CHOP-SME-2-049,84118349FEC74FC18C11983398E20C21,MiuSIPStack,10,GetSocket: Success!! Key 10.25.34.21:4237. Data 0xb89cb60
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