[SIPForum-discussion] Regarding sequence of 1XX response

[Sharanagoud BD.]

Hello,

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.


Thanks,
--Sharan
Bangalore
    



-----Original Message-----
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Roy, Nishant
Kishore
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
 ----------INVITE-->
 <---------183-----
 <--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 ?




Regards
Nishant


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