[Asterisk-Users] Codec Voodoo

[Brian Capouch]

Andres wrote:
> Are you making calls out to Nufone or simply from one of your servers to 
> another?  We noticed this problem when we upgraded one of our servers to 
> the latest CVS and left another one with an older version.  Seems that 
> the latest changes with rtp.c need to be applied everywhere. When we 
> upgraded all servers then the audio returned to normal but the 
> connection with Nufone started sounding horrible.
> 
> We had to roll back to the older version of rtp.c to get back the good 
> audio with Nufone.
> 

What codec are you using to talk to Nufone?

I have noticed that there are some serious problems with newer versions 
of Speex--or at least there were just a couple of weeks ago, when used 
with the older versions, such as are installed on many asterisk 
instances out there.

Codec stuff sure does feel like voodoo sometime.  I'd love it if someone 
with a handle on this (particularly the "why would a changed RTP stack 
cause some ITSP connections to go down the shi**er" deal) could 
enlighten us all.

Thx.

B.