Martin Joseph wrote:
Transcoding is a bigger hit then mixing as i understand it.
If all the conference members are using ulaw for example, then having
the playback material encoded in ulaw is the big winner. If there are
different codecs connecting, then there is a lot of
decoding/mixing/recoding that will need to occur.
There is a misunderstanding here. The only time transcoding is not
required is when data is just being "passed through", either from a data
file (recording, Music on Hold, Voicemail, etc.) or from one channel to
another, AND the format is the same.
However, once mixing is required, i.e. for a conference, transcoding
will always be required because you can't mix compressed data. All
channels have to be decoded to sLinear, mixed, and then reencoded.
John
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