[SIPForum-discussion] what is the sip proxy behaviour in case callee is not registered

[Karthikeyan Selvaraj]

Hi below one is correct.

 Subbose the callee is currently not available, then it possible the callee did call forwarding to others..
if there is no call forwarding the below one is correct.







Regards,
Karthikeyan S


From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of tester voip
Sent: Sunday, July 31, 2011 3:54 PM
To: HM Kias
Cc: discussion at sipforum.org; nitisha gupta
Subject: Re: [SIPForum-discussion] what is the sip proxy behaviour in case callee is not registered

Not exactly HM........the inbound proxy at callee will search the location server to get the address of the UAS..........so if the UAS isnt registered it wont get the address and hence will reply -

1.If the UA as never registered,In that case since it doesnt find the UA,so it'll send 404.
2. If UA had registered before but currently not available, then 480.



On Sun, Jul 31, 2011 at 12:28 AM, HM Kias <hmkias at gmail.com<mailto:hmkias at gmail.com>> wrote:
The  proxy server starts a timer when a request is forwarded, if no response to the request is received within the timer period, the proxy will retransmit the request, relieving the user agent of this task.

On Sat, Jul 30, 2011 at 1:59 AM, tester voip <tester.voip1 at gmail.com<mailto:tester.voip1 at gmail.com>> wrote:
two scenarios----

1.If the UA as never registered,In that case since it doesnt find the UA,so it'll send 404.
2. If UA had registered before but currently not available, then 480.

On Thu, Jul 28, 2011 at 4:16 PM, nitisha gupta <nitisha.gupta06 at gmail.com<mailto:nitisha.gupta06 at gmail.com>> wrote:
Hi

Can anyone please explain :

what is the sip proxy behaviour in case callee is not registered?

Thanks
Nitisha
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