11-23-2009 03:25 AM - edited 03-15-2019 08:33 PM
Dear All,
I have a cluster of three 7.1.3 CUCM. I have created a SIP trunk to service provider. I am able to make and receive calls. The issue I am facing is that the call gets disconnected every 15 mins.After seeing the capture I see that after 15 mins CUCM doesnot respond to the update messages and after 10th unsucessful message the Service provider sends BYE message and the call disconnects. I am not sure why is our CUCM not responding to UPDATE messages from Service Provider SIP server.
Please help on this.
Thanks,
Vinay
11-26-2009 05:02 PM
Hi Vinay,
Take a look at:
http://www.packetizer.com/rfc/rfc3311/
5.1 Sending an UPDATE
The UPDATE request is constructed as would any other request within
an existing dialog, as described in Section 12.2.1 of RFC 3261. It
MAY be sent for both early and confirmed dialogs, and MAY be sent by
either caller or callee. Although UPDATE can be used on confirmed
dialogs, it is RECOMMENDED that a re-INVITE be used instead. This is
because an UPDATE needs to be answered immediately, ruling out the
possibility of user approval. Such approval will frequently be
needed, and is possible with a re-INVITE.
RE-INVITE is recommended,
In our documentation we state:
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_1_2/ccmsys/a08sip.html#wp1157367
Support for 3311 UPDATE method.
1. I understand CUCM is connected directly to Provider, please confirm,
2. We can try to change the refresh interval in Service Parameters to defaultvalue 1800 (30 minutes) we use half = 15 min to maximum and test.
3. You can also talk to your provider to change to Re-INVITE, but definetly parameter may need to be changed?
HTH
11-26-2009 10:10 PM
The reason could be the SIP refresh timer was not being received
Try using the following command on the gateway
request INVITE sip-header Allow-Header modify ", UPDATE" ""
request REINVITE sip-header Allow-Header modify ", UPDATE" ""
response 180 sip-header Allow-Header modify ", UPDATE" ""
response 200 sip-header Allow-Header modify ", UPDATE" ""
Please let me know the results
HTH
>>Vivek Kalra
11-30-2009 01:40 AM
Hi,
Where was the capture taken from (CUCM or provider-side)?
Did you rule out a firewall or App Layer gw inspection issue?
If not, please exclude SIP inspection on PIX/ASA/L7FW devices existing between CUCM and provider.
11-30-2009 12:07 PM
We had the same problem here exactly. We tore our hair out for days trying to figure this out. We resolved this issue by updating the IOS on our Router. We went to version > Release: 12.4.20T2 ( ED - Early Deployment ).
Hope this helps.
Liam
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