[SIPForum-discussion] Query Regarding Retransmission of 405 and 501responses

sunilkumar.verma at wipro.com sunilkumar.verma at wipro.com
Tue Dec 15 04:02:19 UTC 2009

Hi Sumeet,


It is only done for any retransmission of NON Invite Request. 

I don't think there is any difference in Retransmission based on type of

You can refer to NON INVITE server transaction State machine for the
same. Section 17.2.2 in RFC 3261.




Sunil Verma



From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Sumeet Bhardwaj
Sent: Monday, December 14, 2009 12:07 PM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] Query Regarding Retransmission of 405 and


Hello All,


Are retransmissions of 405 and 501 responses happened in UDP mode, like
for final responses?


Note:  405 and 501 responses are sent when component receives Non-Invite
requests which are not implemented or supported by the component





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