CME to CCM CTI RP (IPCC) CFNA/CFB to Unity VM call failure

Unanswered Question
Dec 7th, 2009

We have a remote CME (172.30.30.1) using a SIP Trunk to a CCM4.1 (192.168.12.10). We are not aware of anything which has recently changed however we are now experiencing call failures when dialling a CTI RP (IPCC Queue) from CME over a SIP Trunk. When the IPCC queue is busy or no agents are available the queue forwards the call to unity VM, we believe that the call is failing at this point.

ccsip debugging on the CME shows the call flow detailed below. Basically the CCM keeps sending INVITE’s back to the CME but these are not acknowledged.

Have any experienced this issue before, do you know how it can be resolved?

Any information would could help resolve this issue would be greatly appreciated.

Regards,
Chris


********* Failed Call from UK (2204) to US (7100) *********


Sent:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71B26BF
Remote-Party-ID: "Alvaro" ;party=calling;screen=no;privacy=off
From: "Alvaro" ;tag=61FE6E54-1CB6
To:
Date: Tue, 01 Dec 2009 11:02:59 GMT

Received:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71B26BF
From: "Alvaro" ;tag=61FE6E54-1CB6
To: ;tag=16983032
Date: Tue, 01 Dec 2009 10:02:50 GMT

Received:
SIP/2.0 180 Ringing
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71B26BF
From: "Alvaro" ;tag=61FE6E54-1CB6
To: ;tag=16983032
Date: Tue, 01 Dec 2009 10:02:50 GMT

Received:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71B26BF
From: "Alvaro" ;tag=61FE6E54-1CB6
To: ;tag=16983032
Date: Tue, 01 Dec 2009 10:02:50 GMT


Two Way Active call

The Call Setup Information is:
Call Control Block (CCB) : 0x6697A88C
State of The Call : STATE_ACTIVE
TCP Sockets Used : NO
Calling Number : 02222132204
Called Number : 7100
Source IP Address (Sig ): 172.30.30.1
Destn SIP Req Addr:Port : 192.168.12.10:5060
Destn SIP Resp Addr:Port : 192.168.12.10:5060
Destination Name : 192.168.12.10

009937: Dec 1 11:02:59.594 GMT: //4714/E7B00D23B52D/SIP/Call/sipSPIMediaCallInfo:
Number of Media Streams: 1
Media Stream : 1
Negotiated Codec : g711ulaw
Negotiated Codec Bytes : 160
Negotiated Dtmf-relay : 6
Dtmf-relay Payload : 101
Source IP Address (Media): 172.30.30.1
Source IP Port (Media): 17494
Destn IP Address (Media): 192.168.12.11
Destn IP Port (Media): 28442
Orig Destn IP Address:Port (Media): 0.0.0.0:0


Sent:
ACK sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71CA7
From: "Alvaro" ;tag=61FE6E54-1CB6
To: ;tag=16983032
Date: Tue, 01 Dec 2009 11:02:59 GMT

Received:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 10:02:57 GMT

Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:07 GMT

SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:07 GMT

Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:07 GMT

Received:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 10:02:58 GMT

Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:07 GMT

Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:07 GMT

Received:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 10:02:59 GMT

Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:08 GMT

Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:08 GMT

Received:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 10:03:01 GMT

Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:10 GMT

Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:10 GMT

Received:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 10:03:05 GMT

SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:14 GMT

Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:14 GMT

Sent:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:14 GMT

Received:
INVITE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 10:03:13 GMT

Sent:
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.12.10:5060;branch=z9hG4bK50fba1f6
From: ;tag=16983032
To: "Alvaro" ;tag=61FE6E54-1CB6
Date: Tue, 01 Dec 2009 11:03:22 GMT

Sent:
BYE sip:[email protected]:5060 SIP/2.0
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71D1511
From: "Alvaro" ;tag=61FE6E54-1CB6
To: ;tag=16983032
Date: Tue, 01 Dec 2009 11:03:22 GMT

Received:
SIP/2.0 200 OK
Via: SIP/2.0/UDP 172.30.30.1:5060;branch=z9hG4bK71D1511
From: "Alvaro" ;tag=61FE6E54-1CB6
To: ;tag=16983032
Date: Tue, 01 Dec 2009 10:03:17 GMT

I have this problem too.
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