[SIPForum-discussion] Reliable provisional response

[HM Kias]

One of the scenario is when  a proxy receives an invite from client A and
forks to multiple Clients  eg. B & C. In this case the client B & C begins
alerting client A by sending 2 provisional responses.

The 2 provisional responses are identical except for having different TO
tags & contact URIs.

The PRACK method is used to acknowlegde receipt of reliably transported
provisional responses. The UAC generates the PRACK when a provisional
response is received containing Rseq & 100Rel headers.




On Mon, Jul 4, 2011 at 10:37 PM, K Satyadarshi <satyadarshi28 at gmail.com>wrote:

>  Hi Forum,
>
> Can someone pls tell about scenarios where a proxy can send reliable
> provisional responses ?
>
> --
>  K Satyadarshi
>  <satyadarshi28 at gmail.com>
>
>
>
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-- 
HM Kias
91-9443467600
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