[SIPForum-discussion] Require Header Field In SIP

[Vivek Batra]

Please refer RFC 4028 (Session Timers in Session Initiation Protocol)

 

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From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Bilal Ahmed
Sent: Monday, December 22, 2008 1:34 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Require Header Field In SIP

 

 

Hi,

 

1.I am having a problem with my SIP server which is continuously sending the
value of Timer in Require header field as Require:Timer; in 200 OK messages
after call establishment. Is there any way we can figure out which timer is
exactly required by the SIP server(Any relevant RFCs?) I have attached the
wireshark dump(Kindly enable a filter on SIP messages)

 

2.Moreover its a breakout SIP call from an IMS network to GSM subscriber via
a third party MGCF(our SIP server), call continues for 14 secs exaclty and
then drops by reception of CANCEL message from IMS BGCF to our SIP server
and what i am suspecting is that IMS BCGF issues CANCEL when it cannot
fulfull Require:Timer from SIP server. Can anyone confirm this as well in
attached wireshark dump?

 

Thanks in advance,

-- 
Regards,
Bilal Ahmed
 

 


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