I'm communicating a softphone (SJPhone) to a Grandstream phone GXP-2000.
The codec order on each one is the next:
SJPhone: GSM - iLBC - PCMA - PCMU
GXP2000: G729 - GSM - PCMA - PCMU
(I have a G729 license, so there's no problem with transcoding G729)
In my sip.conf, I've defined the following
Álvaro Palma wrote:
But, if I initiate a call from the softphone to GXP-2000, Asterisk
always to the GXP phone GSM as the first codec choice, instead of G729,
as I could check with ethereal running in the same server than Asterisk.
The SIP INVITE from Asterisk to GXP looks like
This is
hi Palma,
as the SJ initiate the call, it will allways go with GSM Codec as the codec should be identical used on both sides. as you do not have G729 on the SJ, it will never use G729.
furthermore, i think that if the GSM will not work, then the second option choosed would be PCMA
i hope i gave
