[SIPForum-discussion] no 180 and 183 message

[Tomasz Zieleniewski]

Hi,

Although not very often meet, such situation is correct.
Any non "100 trying" provisional responses are optional.

Kind regards,
- Tomasz Zieleniewski

2009/7/13 Jing Jiang <jjiang at biamp.com>

>  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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