Thanks for answering, Andy.
So the key point is, both end need to have same codec supported. It doesn't matter how many system/server/broker are between those two end, right?
Thanks again..
-----Original Message----- From: andreas.granig@inode.info Sent: Mon, 01 Aug 2005 20:01:19 +0200 To: innocent.evil@inbox.com Subject: Re: [Serusers] codec question
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).
Andy