[asterisk-users] Different codecs for reading and writing

[Alex Balashov]

Elliot Murdock wrote:

> I am wondering how to configure Asterisk and devices so I can use
> different codecs for upstream and downstream packets.

You can't. With SIP as the channel technology, at least, the SDP 
negotiation model demands a uniform codec from both sides.

I guess there's nothing to stop two endpoints that both have multi-codec 
capabilities from using different codecs for send and receive in 
*principle*, but it would fall outside the standard implementational 
behaviour of SIP endpoints.

-- 
Alex Balashov
Evariste Systems
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