Subject: RE: CUCM sends INVITE after 900 sec Replied by: Dan-Anders Hook on 19-01-2012 08:23:14 AM Hi,
Sounds like interop problems with session refresh. Try changing the CUCM Service parameter "SIP Session Expires Timer". A refresh is sent after half this time, and the default is 1800 sec. I have changed this to 86400 (max) for some customers due to the same reason.
//Dan This document was generated from CDN thread
Created by: Sascha Monteiro on 18-01-2012 11:27:03 PM Hi, We have built a Recorder that receives calls via a SIP trunk (recording profile) through the IPPhone's built in bridge It works fine until the call gets to 900 seconds, we receive another INVITE and it looks like our app sends a Trying, then CUCM sends BYE I could not find this behaviour in SIP docs, is it a keep-alive? Should CUCM send this? What should happen? This is a wireshark trace from our server, appreciate any feedback!
Subject: RE: CUCM sends INVITE after 900 sec Replied by: Abdul Rasheed on 19-01-2012 12:38:44 AM Hello, which is the version of your call manager? what is the reason of BYE in wireshark?
Best regards Rasheed
Subject: RE: CUCM sends INVITE after 900 sec Replied by: Sascha Monteiro on 19-01-2012 07:34:26 PM cucm7.1
this is from wireshark; BYE sip:18.104.22.168:5060;transport=tcp SIP/2.0 Route: <sip:22.214.171.124:5060;transport=tcp;appname=CiscoStreamingRecorder;final_response=true;lr> Reason: Q.850;cause=86 Date: Wed, 18 Jan 2012 21:23:04 GMT From: "TK" <sip:firstname.lastname@example.org;x-nearend;x-refci=17435925;x-nearenddevice=SEP002584179241>;tag=ea21c2f9-ce2a-413c-a933-cb6751cb8e6c-17435930 Content-Length: 0 User-Agent: Cisco-CUCM7.1 To: <sip:email@example.com>;tag=3585576 Call-ID: firstname.lastname@example.org Via: SIP/2.0/TCP 126.96.36.199:5060;branch=z9hG4bK9c6c5c46eb4d P-Preferred-Identity: "TK" <sip:email@example.com> CSeq: 103 BYE Max-Forwards: 70
Subject: RE: CUCM sends INVITE after 900 sec Replied by: David Staudt on 20-01-2012 06:20:48 PM cause=86 looks to be Network Timeout, so I agree the SIP session refresh mechanim mentioned above is likely the root cause. I guess you can either modify the recorder side to interop with the way UCM does this refresh, or modify the timer so that in practice it never occurs (as above.)
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