[SIPForum-discussion] 183 Session Progress

[Bessem BEN JEMAA]

Hi,

I think that we receive this response when we have 2 signaling protocol
between end to end.

For example when we have a voip to PSTN call:

 SIP and SS7




2010/1/20 SIP Babie <sipbabie at gmail.com>

> Hi All,
>
> Please let me know when the provisional response  "183 Session Progress" is
> been sent as a reply of INVITE.
> Does Outbound Proxy looks for some header in INVITE on the basis of which
> it sends "183 Session Progress" provisional response, like 100rel support in
> INVITE.
>
> Regards
> SIP Babie
>
>
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