[SIPForum-discussion] Regarding sequence of 1XX response

Sharanagoud BD. sharanagoud_bd at spanservices.com
Fri May 23 11:50:07 UTC 2008


User can send 183 before 180 and also no need to maintain 1xx sequence
ordering here.

For better understanding with examples please refer 
RFC 3262 - Reliability of Provisional Responses in Session Initiation
Protocol (SIP)

I hope this will help you.


-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Roy, Nishant
Sent: Friday, May 23, 2008 4:03 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Regarding sequence of 1XX response

Hi all,

I have one call flow like ...

 A               B
 <--some announcement will be played here ----->  ------PRACK------>
<------200 ok for PRACK--- <-----180 ringing -----

Mu doubt comes over here can a party B send a 183 before 180 ..... I
mean the 1xx response has to maintain in some sequence ?


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