[Asterisk-video] h264 with Polycom HDX series

[Joseph Baltes]

Hi,

I found this same issue with all H.264 devices in the 1.4.x. The problem is
that the main branch (correct term?) of Asterisk isn¹t supporting FMTP for
the RTP payload in H.264. This is used to declare the H.264 profiles/levels
and other options in the call SDP, and without it, the SIP device hears
strange voices about H.264, is confused, and does nothing ;-)

Follow this old thread
(http://www.mail-archive.com/asterisk-video@lists.digium.com/msg00101.html),
it¹s worked well for me using Polycom PVX and other SIP H.264 devices.

Regards,

Joe Baltes
RADVISION, Inc.


On 2/10/10 6:05 PM, "Borja SIXTO" <borja.sixto at i6net.com> wrote:

> Have you try the echo test with each phone ?
> 
> 
> Le 10/02/2010 18:47, Loïc a écrit :
>> > Hi,
>> >
>> > I'm trying to use Asterisk 1.4.29 to connect two Polycom HDX in High
>> > Definition h264 format with SIP.
>> > When I use h263 , no problem. However, when I try to use h264 I can not
>> > have the video streams. The communication is well established : I have a
>> > G711 audio stream but no video.
>> >
>> > If I use a SIP h264 videophone with a Polycom HDX, the Polycom well
>> > receives the video stream but no video on the SIP videophone.
>> >
>> > Any ideas what is the problem ?
>> >
>> > sip.conf
>> > [general]
>> > context=default
>> > bindport=5060
>> > bindaddr=0.0.0.0
>> > srvlookup=yes
>> > notifymimetype=text/plain
>> > videosupport=yes
>> > maxcallbitrate=1920
>> > nat=no
>> > canreinvite=no
>> >
>> > [100]
>> > type=friend
>> > username=100
>> > secret=XXX
>> > host=dynamic
>> > context=default
>> > callerid=XXX<100>
>> > disallow=all
>> > allow=ulaw
>> > allow=alaw
>> > allow=h264
>> > qualify=yes
>> >
>> >
>> > [200]
>> > type=friend
>> > username=200
>> > secret=XXX
>> > host=dynamic
>> > context=default
>> > callerid=XXX<200>
>> > disallow=all
>> > allow=ulaw
>> > allow=alaw
>> > allow=h264
>> > qualify=yes
>> >
>> >
>> > Thanks in advance...
>> >
>> >
>> > Loïc
>> >
>> >   
> 
> --
> Borja Sixto, Research&  Innovation - http://www.i6net.com
> Office: +34 911877477 | Gtalk: bsixto at gmail.com | Skype: borja.sixto
> 
> 
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