[Freeswitch-users] Issue when receiving INVITE with both audio and image (T38)

[François]

There you go:

http://jira.freeswitch.org/browse/FS-5714

Thanks,
François.

On Fri, 2013-08-16 at 13:01 -0500, Anthony Minessale wrote:

> Sure
> 
> 
> On Aug 16, 2013 11:14 AM, "François" <fdelawarde at wirelessmundi.com>
> wrote:
> 
>         Thanks for the tip. Should I add a JIRA ticket?
>         
>         François.
>         
>         On Fri, 2013-08-16 at 10:00 -0500, Anthony Minessale wrote:
>         > We can investigate that,  Meanwhile you could use regex in
>         your
>         > dialplan for this situation and set
>         "sip_ignore_reinvites=true" to
>         > mitigate.
>         >
>         >
>         >
>         >
>         > On Fri, Aug 16, 2013 at 8:56 AM, François
>         > <fdelawarde at wirelessmundi.com> wrote:
>         >         Hello list,
>         >
>         >         I've seen several gateways (Patton, Audiocodes,
>         Nortel CS2K),
>         >         sending
>         >         both audio+image (T38) in the initial INVITE. In a
>         simple
>         >         bridge
>         >         scenario, FS will just ignore the T38 part and setup
>         an audio
>         >         connection
>         >         only with b-leg.
>         >
>         >         My issue is later on if/when we receive a re-INVITE
>         (ex: SIP
>         >         timers
>         >         refresh) with the same SDP (audio+T38), FS now
>         considers it as
>         >         FAX and
>         >         sends a re-INVITE to b-leg with T38 only! In case
>         the
>         >         destination is
>         >         voice only, the call hangs up.
>         >
>         >         ---
>         >
>         >         Asterisk apparently had the same issue, they solved
>         it by
>         >         setting up
>         >         both streams on a-leg (RTP + UDPTL). If they receive
>         packets
>         >         on UDPTL
>         >         they just re-INVITE b-leg with T38.
>         >
>         >         See: https://reviewboard.asterisk.org/r/208/
>         >         Also:
>         https://issues.asterisk.org/jira/browse/ASTERISK-11843
>         >
>         >         Is this the right way to go? (Also is it feasible in
>         >         FreeSwitch)? I can
>         >         add a JIRA if necessary.
>         >
>         >         Thanks,
>         >         François.
>         >
>         >
>         >
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