Re: [Partysip-dev] ACk always be regarded as late ACK and be discarded.

[Aymeric Moizard]

Would be great to have a call flow so that I can answer.

I guess the Pingtel is not configured properly.

Phones often show 2 options for specifying a proxy.
 use outbound proxy.
 or use proxy.

In the first case, partysip will not understood ACK sent
by the phone as this message MUST not come there if the
UA is compliant.

Specifying outbound proxy make them non compliant. The only
way to specify that messages should be routed through the
server is by using record-route and this is always decided
by the proxy.

Aymeric

On Fri, 7 Mar 2003, Roland Zheng wrote:

> Hi,
>      I use "record-route off" configuration.
>      WHen I use Pingtel to make a call through partysip server to another UA,
>      it establish the connection, and after 30 seconds, it auomatically lost 
> the connection.
>      I found that, when Pingtel send ACK to partysip, the partysip always 
> regard it as late ACK and
>      discard it ( in code 
> psp_core_handle_incoming_message_as_statefull_only())
>      and the partysip keep sending 200 OK to Pintel, because partysip lost 
> the ACK.
>      then Pingtel keep receiving 200 OK, and it think its ACK lost somewhere, 
> so Pingtel
>      disconnect the call.
>      Is it a bug or I have to turn record-route on?
>      Most of UAs  sends ACK to  proxy server instead of contact regardless 
> whether it have record-route.
>
> Thank you,
>
> Roland
>
>