[SIPForum-discussion] How can we Handle Glare/Race Condition at SIP

Underwood, Rosa rosa.m.underwood at verizon.com
Thu May 7 20:15:36 UTC 2009



Adjustment of session timers can reduce the occurrence of glare
conditions during established calls. 




From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Manoj Singh
Sent: Wednesday, May 06, 2009 1:28 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] How can we Handle Glare/Race Condition at


My Scenario is like this.


There User A and User B.

Both  of these Users are Register through One Common Proxy.


What will happen If Both User try to call each other at same timie


in other word 


"User A tried to make a call to User B and at the same time User B also
tried to call User A".

I guess when User A tied to Call B and Server give the 4xx response that
USer B is Busy.

But Actually User B also tried to make a Call to User A.

 So Do we have any procedure to Handle the this Race/ Glare Control in
SIP ??

Manoj Singh


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