[asterisk-dev] AST_FRAME_DIGITAL

[Mikael Magnusson]

Klaus Darilion wrote:
> 
> Kevin P. Fleming schrieb:
>> Klaus Darilion wrote:
>>
>>> What about adding AST_FORMAT_H223 to rtp.c too? This way we could 
>>> forward H223 to other Asterisk Boxes doing the demux and video stuff.
>> This is not useful unless a channel driver that uses RTP can
>> send/receive H.223 (which means there must be a means of negotiating
>> this format with other endpoints, in the case of SIP that means there
>> must be support in SDP for H.223 media stream negotiation).
> 
> 
> I thought this is rather simple - just adding AST_FORMAT_H223 to rtp.c. 
> We only have to agree on the name in the a=rtmap line.
> 
> klaus
> 

Have you considered CLEARMODE as defined in RFC 4040?
I found a pcap sample in Wireshark wikipedia:

     A sample of H.223 running over RTP, following negotiation over SIP.
     http://wiki.wireshark.org/SampleCaptures

Mikael