Eric Wieling wrote:
[EMAIL PROTECTED] wrote:
Hi,
How can i implement VAD/DTX using zaptel with asterisk towards PSTN.
TDM (PSTN/telcos) do not support VAD. The entire idea of VAD is not even a valid idea.
Doing VAD on audio coming _from_ the TDM world certainly is something you might want to do, to dramatically reduce the bandwidth you consume when sending the audio via VoIP channels.
This kind of thing is not presently implemented in *, though, but it could be. (note: doing it well will require a bunch of CPU, though. I wonder if it could be done in the same DSP that is doing echo-cancellation on the new TE4xxP boards?
-SteveK
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