[Freeswitch-users] Recording G729

[Kees Varekamp]

Hi all,

I'm suffering from poor sound quality on my setup, using GSM on the a-leg
and PCMU on the b-leg. I'm thinking it's mostly bandwidth/network related,
so I'm considering switching to G729 on both legs, as that is the only
compressed codec that the b-leg supports (it's a sip gateway).

But a complicating factor is that the calls need to be recorded in mp3.

So I have some questions that I hope someone here can answer:


   - Does transcoding (for example GSM<>PCMU) negatively affect the sound
   quality, even when the CPU seems to be ok with it?
   - If yes, does recording 2 legs using the same codec (say G729) to a
   different sound format (say mp3) have the same (negative) effect?
   - When you use G729 on both legs (using mod_com_g729), it is even
   possible to record to mp3?


Thank you,

Kees
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