[SIPForum-discussion] LOOP CALL

[Mishra2, Abhishek (NSN - IN/Bangalore)]

Hi Nitin

 The  Requests that arrive at a proxy, is forwarded  and later arrives
back at the same proxy are treated as loop requests provided:
(a) Via header branch parameter value matches to previous requests by
the proxy
 
SIP provides following mechanism for loop detection and prevention:
MAX-Forwards
========
(i) Counter decremented by 1 on every hop
(II) Discard request when it is zero
 
VIA
===
(i)  Every proxy inserts an address
(ii) Check for my address (proxy address) when the request comes
 
 
Loop requests are errors
 
Hope that this helps
 
Bye
Abhishek 

-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of ext nitin kapoor
Sent: Wednesday, August 20, 2008 3:44 AM
To: discussion at sipforum.com
Subject: [SIPForum-discussion] LOOP CALL

Hello Everyone

I just wants to know  about the LOOP CALL. what does it mean. Why we are
using this.

Please let me know because i wants to know ASAP.

Regards
Nitin Kapoor
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