g729 and transcoding

[Op3r]

I found out that g729 if you use it for agent and gateway there will be no transcoding that going to happen.

is this true?

[ramindia]

Hi

i found some notes for you from meetme document

Some additional notes on Meetme conferences

The conference bridge runs ulaw codec by default. If you let people connect with GSM or other codecs, Asterisk will use CPU power to convert audio between codecs

ram

[mflorell]

Meetme actually translates everything to slin. Everything is transcoded in meetme to that, it is essentially raw ULAW so you don't see a performance hit when using ULAW like you do when using G729. If you do use G729 for agent and trunks, it will have to transcode both sides.

[Op3r]

is there a way to have it use g729 codec?

[mflorell]

Nope, app_conference can do it, but it is unstable, and noone has been able to fix the random double-free crash bug in it's code.

[gardo]

a good solution is to implement a transcoding gateway. that would reduce load from the vicidial server.