[Asterisk-Users] "chan_iax2.c: Ooh, voice format changed to ..."

[Mimmus]

Can someone explain me this message:
 "chan_iax2.c: Ooh, voice format changed to ..."

Where can I find a list of numeric codes used to identify voice format?

Then, sometime I get an infinite loop of messages like these:
 DEBUG[15015] chan_iax2.c: Ooh, voice format changed to 1
 WARNING[15015] channel.c: Unable to find a codec translation path from g723
to alaw
 DEBUG[15015] chan_iax2.c: Ooh, voice format changed to 8
 DEBUG[15015] chan_iax2.c: Ooh, voice format changed to 1
 WARNING[15015] channel.c: Unable to find a codec translation path from g723
to alaw
 DEBUG[15015] chan_iax2.c: Ooh, voice format changed to 8
 DEBUG[15015] chan_iax2.c: Ooh, voice format changed to 1
 ...

What's happen?


Thanks
-- 
Domenico Viggiani