[SIP Beyond VoIP] Another case where Sylk would reject Notifications

Adrian Georgescu ag at ag-projects.com
Fri Nov 16 16:01:30 CET 2012


The answer is in the line:

SIP/2.0 481 Call/Transaction Does Not Exist

The Notify received by SylkServer from IMS server does not match any subscription. SylkServer started a subscription with Call-ID: JA7JhBheIYEBluQMcw2-RQ2.lh35CntV and got 202 OK. Subsequent NOTIFY must have same call id, but it does not, it uses Call-ID: cwL-bWBXrIVO2VDXdhneNgOluVudateT instead.

Adrian

On Nov 16, 2012, at 3:33 PM, Hadzhiev, Tihomir wrote:

> ==> sip_trace.txt <==
> 2012-11-16 14:53:40.611456 [sylk-server 30934]: SENDING: Packet 1, +0:00:00
> 10.226.20.56:6060 -(SIP over UDP)-> 10.226.20.240:5060
> SUBSCRIBE sip:alice at open-ims.test SIP/2.0
> Via: SIP/2.0/UDP 10.226.20.56:6060;rport;branch=z9hG4bKPjAJwSi5xicEf5AurgbBADneVBfgqOAkTL
> Max-Forwards: 70
> From: <sip:tihoparvi at testing.com>;tag=BNdJ7hoAPdRZGMX.ehk3x80KWzp0946f
> To: <sip:alice at open-ims.test>
> Contact: <sip:clnheraz at 10.226.20.56:6060>
> Call-ID: JA7JhBheIYEBluQMcw2-RQ2.lh35CntV
>  
> 
> ==> sip_trace.txt <==
> 2012-11-16 14:53:40.612043 [sylk-server 30934]: RECEIVED: Packet 2, +0:00:00.000587
> 10.226.20.240:5060 -(SIP over UDP)-> 10.226.20.56:6060
> SIP/2.0 202 OK
>   
> 
> ==> sip_trace.txt <==
> 2012-11-16 14:54:37.258218 [sylk-server 30934]: RECEIVED: Packet 7, +0:00:56.646762
> 10.226.20.240:6060 -(SIP over UDP)-> 10.226.20.56:6060
> NOTIFY sip:wbfhcopd at 10.226.20.56:6060 SIP/2.0
> Via: SIP/2.0/UDP 10.226.20.240:6060;branch=z9hG4bKd0b2.89150127.0
> Via: SIP/2.0/UDP 10.226.20.56:5080;branch=z9hG4bKd0b2.62b4a8f4.0
> To: sip:admin at testing.com;tag=MdlzJqoJndrpldssDBZ-77gVVv87J0fI
> From: sip:alice at open-ims.test;tag=48b5b8952e8d0bca6256941910840e90-ce98
> CSeq: 4 NOTIFY
> Call-ID: cwL-bWBXrIVO2VDXdhneNgOluVudateT
> 
>  
> ==> sip_trace.txt <==
> 2012-11-16 14:54:37.258624 [sylk-server 30934]: SENDING: Packet 8, +0:00:56.647168
> 10.226.20.56:6060 -(SIP over UDP)-> 10.226.20.240:6060
> SIP/2.0 481 Call/Transaction Does Not Exist
> Via: SIP/2.0/UDP 10.226.20.240:6060;received=10.226.20.240;branch=z9hG4bKd0b2.89150127.0
> Via: SIP/2.0/UDP 10.226.20.56:5080;branch=z9hG4bKd0b2.62b4a8f4.0
> Call-ID: cwL-bWBXrIVO2VDXdhneNgOluVudateT
> From: <sip:alice at open-ims.test>;tag=48b5b8952e8d0bca6256941910840e90-ce98
> To: <sip:admin at testing.com>;tag=MdlzJqoJndrpldssDBZ-77gVVv87J0fI
> CSeq: 4 NOTIFY
> Server: SylkServer-2.2.1
> Content-Length:  0
>  
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