[Asterisk-Users] TDM FXO or TE410P codec translation problem

[JackyChen]

Hi, All,

I run Asterisk with Digium hardware TDM 4 FXO & TE410P(E1).
When i dial PSTN to FXO or E1 PRI and softswich to SIP agent, the codec
always use
ulaw(TDM 4FXO) or alaw(TE410P).

Is it possible to change the default codec type to ILBC/GSM/G.729 when
PSTN -> SIP softswitch?

Thanks,