[OpenSIPS-Users] FAX with rtpproxy

Bogdan-Andrei Iancu bogdan at voice-system.ro
Thu Feb 5 10:08:18 CET 2009


Hi Michel,

The re-INVITE should be made by one of the parties (caller or callee) - 
make a trace (use ngrep) in order to see if there is a re-INVITE that 
may break your media.

Regards,
Bogdan

michel freiha wrote:
> Dear Bogdan,
>
> You are right...I should make a reinvite...Can you please send me the 
> method how to use it for FAX calls in order to configure it in my 
> opensips.cfg file?
>
> regards
>
> On Tue, Feb 3, 2009 at 12:49 PM, Bogdan-Andrei Iancu 
> <bogdan at voice-system.ro <mailto:bogdan at voice-system.ro>> wrote:
>
>     Hi Michel,
>
>     FAX is transparent for RTPProxy - rtpproxy deals at IP level, so
>     it doesn't care about RTP and about the codecs, etc... So, if it
>     is fax or voice, it is the same.
>
>     Maybe the problem is when you have a re-INVITE for changing the
>     codecs (from voice to FAX)...do you have a re-INVITE in your fax call?
>
>     Regards,
>     Bogdan
>
>     michel freiha wrote:
>
>         Hi all,
>         I have a problem with RTPProxy and FAX..the rtpproxy is not
>         sending back rtp packets to the source endpoint...Does anyone
>         faced this issue before?
>
>         Thanks a lot
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