in some hybrid codec scenarios, Ive seen people suggest Signed Linear..
this saves transcoding from PCMA to SLIN then to G729 for instance..


On 27 February 2012 11:09, Steve Underwood <steveu@coppice.org> wrote:
On 02/27/2012 06:15 AM, Anita Hall wrote:
> Yesterday, I saw someone storing his audio prompt files in 44.1 kHz
> mp3 for playback !!! I am still recovering from the shock!
>
> What will be the correct format to keep prompts in if we are connected
> via FreeTDM to an E1:
>
> GSM or PCMA?
>
> regards,
> Anita
I'm shocked. You don't want to store your prompts in a wideband format,
and be prepared for the future? :-)

If you have a pure E1 system, use PCMA. That is the codec for E1s. GSM
will give poorer quality and require transcoding.

Steve


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--
Sincerely

Jay