[Asterisk-video] H320

Christian Richter christian.richter at beronet.com
Fri Jun 9 03:45:21 MST 2006


Hi H320 guys :)

I have some customers that do video passthrough with chan_misdn, which
works quite OK for them. So as mentioned before H320 is in the
bchannels, and is therefore neither very interesting for chan_zap nor
for chan_misdn.

Things that happen in the voice path are only intersting for apps.

What you want to do happens already with audio data, lets say you have a
sip phone which uses codec g729 and call over chan_misdn to the pstn
which knows only alaw/ulaw.

In the audio case we call the thing codec that does the magic, why
shouldn't we have codecs that transcode between h.320 and the sip/h323
standards ?

The only problem here is that the codecs work only on single voicepaths,
we would need to tell the codecs that there might be other voicepaths
which are used for bonding, but the channeldrivers like chan_misdn and
chan_zap know which number and which type of calls are involved and
could tell the codecs which voice-paths might be used for bonding.


/crich



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