[Serusers] codec question

Andreas Granig andreas.granig at inode.info
Mon Aug 1 20:01:19 CEST 2005

Innocent Evil wrote:
> IP Phone       --> SIP Server   -->    Asterisk -->    (Voice Mailbox)
> (G723.1, G729)   ->  (GSM)      ->    (GSM, G729)      GSM coded file

The SIP server (if it's a proxy like SER) doesn't matter for codec 
negotiation, because it just does the SIP signalling.

So if your phone supports G.723.1 and G.729, then Asterisk has to 
support one of these (for G.729 you need a license from Digium, G.723.1 
is only supported in pass-thru-mode AFAIK, so not usabe here).


More information about the sr-users mailing list