[SIPForum-discussion] no 180 and 183 message

[Maulik Shah (maushah)]

Do not think its wrong behavior that the proxy did not sent back the 18x
messages - those are provisional messages to indicate status of the call
has moved to alerting or ringing and are optional on a SIP call. If the
proxy wants to auto connect (like an IVR) - then its perfectly fine to
send back a 200 OK without a 18x - note the calling party may hear dead
air till the 200 OK is received.
 
Thanks
Maulik

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of Jing Jiang
Sent: Monday, July 13, 2009 10:44 AM
To: discussion at sipforum.org
Subject: [SIPForum-discussion] no 180 and 183 message



I saw a situation:

UA1 makes a call to a PSTN number, but the proxy just send back 100 and
then follows 200 message.  I though the proxy should send back 180 or
183 before 200 response.

 

Does the proxy do anything wrong?

 

Regards,

Jing

 

 



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