[asterisk-users] which codec over iax => pstn

[sean darcy]

using asterisk(A) over iax to another asterisk server(B) which connects 
to pstn over pri.

Doesn't B have translate to ulaw whatever goes out to the pstn, so 
therefore shouldn't A choose ulaw as the iax codec to B? That way 
there's no loss translating from {gsm, ildc, etc} to ulaw on the B server.

My partner thinks I'm nuts, and that gsm is much more "efficient" as the 
iax codec.

BTW, we have 512kbs over the iax connection.

Whom do you support?

sean