[asterisk-dev] AST_FRAME_DIGITAL

[Sergio Garcia]

---------- Original Message ----------------------------------
From: Mikael Magnusson <mikma264 at gmail.com>
Reply-To: Asterisk Developers Mailing List <asterisk-dev at lists.digium.com>
Date:  Mon, 17 Sep 2007 11:46:58 +0200

>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


By the way... very interesting.. 

H.223
h223-over-iax.pcap.gz (libpcap) A sample of H.223 running over IAX.
h223-over-tcp.pcap.gz (libpcap) A sample of H.223 running over TCP. You'll need to select 'Decode as... H.223'.
h223-over-rtp.pcap.gz (libpcap) A sample of H.223 running over RTP, following negotiation over SIP.


Best regards
Sergio