Re: [Ekiga-list] Ekiga 3.0.2 with IPP codecs doesn't connect using SIP protocol

[yannick <sevmek free fr>]

Eugen Dedu a écrit :
> Evan R. Murphy wrote:
>> 2009/5/7 chaitanya mehandru <chinku linux gmail com>:
>>> Hi,
>>> I am trying to make video call(H264 codec) using IPP codecs with
>>> Ekiga. When
>>> I use the SIP protocol, the remote user gets the invitation and on
>>> accepting
>>> the invitation, the call terminates. In the status bar at the bottom,
>>> I see
>>> the 'Missed Call' message.
>>> If I use the H323 protocol, then the call gets connected but remote
>>> video is
>>> not available.
>>> I am using H264 video codec and the image size for video is QCIF.
>>> Please suggest me what to do.
>>> Thanks,
>>> Chaitanya
>>
>> Hi Chaitanya,
>>
>> Are you sure the remote user has H.264? Mismatched codecs can create
>> the kind of video passage issue you seem to be having on the H.323
>> protocol. (Can you see the remote user's video in this case?) Also,
>> which version of Ekiga are you running, and on which OS?
> 
> With H323, only H.261 is available.  So no video should be seen on
> *both* parties.  (Please someone correct me if I am wrong.)
> 
> As for SIP case, could you send the -d 4 output?
> 

AFAIK, using H.323, if the other end supports video, it *must* support
H.261 codec.

see e.g. "While video capabilities are optional, any video-enabled H.323
terminal must support the H.261 codec; support for H.263 is optional."
source: http://www.packetizer.com/ipmc/h323/papers/primer/

As Ekiga only support H.261 video codec for the H.323 protocol, it seems
there is an issue with the other end, or a bug in ekiga which is
unlikely as it supports this feature since a long time now.

Best regards,
Yannick