[Freeswitch-users] How to overcome 415 Unsupported Media Type

[Peter P GMX]

I try to attach Bravis video conference clients to Freeswitch. Those
video conference clients are really working good (Multilingual clients
for testing ca be downloaded here: http://www.bravis.eu/). Some big
companies here in Germany use them in large installations. They are
based on SIP, but do not use any publicly known codecs. Normally they
are maintained and routed via our OpenSIPS server, but I would like to
integrate them into our Freeswitch system. That way I do not have to
manage 2 SIP servers for phone calls and video conferencing calls.

However the SIP message does not provide
     Content-Type: application/sdp.
Instead it provides
    Content-Type: application/BRAVIS.
The clients register successfully but they do not invite. Freeswitch
answers "SIP/2.0 415 Unsupported Media Type."
I have added
   bypass_media=true into the dialplan
and
  inbound-late-negotiation true in the internal profile
but this didn't help. I think Freeswitch complains about the content-type.

Is there any way how I may overcome this?

Here is a sample Invite
INVITE sip:835352 at sip5.mydomain.com SIP/2.0.
From: myname
<sip:835351 at sip5.mydomain.com>;tag=5c5c3ef6bbe9de119f1aa11f7ca41a5f.
To: sip:835352 at sip5.mydomain.com.
Via: SIP/2.0/UDP
217.xxx.xxx.xx6:5530;iid=9931;branch=z9hG4bKc4583ef6bbe9de119f1aa11f7ca41a5f;uas-addr=217.24.11.190;rport.
CSeq: 4711 INVITE.
Call-ID: 2-ee3d3ef6-bbe9-de11-9fa1-a11f7ca41a5f.
Contact: "myname" <sip:835351 at 217.xxx.xxx.xx6:5530>.
User-Agent: BRAVIS/1.5.20.27.4585 (Linux 2.6.31-16-generic; generic;
Ubuntu 9.10; i686; de; 8).
Max-Forwards: 70.
Allow: INVITE, BYE, ACK, REFER, MESSAGE, INFO, NOTIFY, OPTIONS.
Supported: 100rel.
Content-Type: application/BRAVIS.
Content-Length: 174.
ACAABAAAFDAAABAAMEFBHCGLACAACAAACPKNBHGOAPLDABAAFAAADBABAAPPAAAAELAFAACAAAHDHCGGGMHIPPUPPPPPOPBEKHHHAPLDOPBEKHHHAPLDABAAAAAADCABAAADFBMDHOAEAAAAAAGIGPHDHEAAPPPPPPJFKGAPLHHNKF.

Best regards
Peter