[asterisk-users] Asterisk 18.0.0 Now Available

[Michael Maier]

Hello!

On 20.10.20 at 14:00 Asterisk Development Team wrote:
> The Asterisk Development Team would like to announce the release of Asterisk 18.0.0.
> This release is available for immediate download at
> https://downloads.asterisk.org/pub/telephony/asterisk

I just tested the new codec negotiation feature and unfortunately wasn't able to get it working as expected. I tried several configurations - but none has been working - the result
has always been the same.

Use case:
Alice calls Bob - sends INVITE 			G722 / alaw / ulaw

Configured in Asterisk for this device: 	G722 / alaw / ulaw / gsm
A:
codec_prefs_incoming_offer = prefer: configured, operation: intersect, keep: all, transcode: prevent


Bob:
Configured in Asterisk for this device:		alaw / ulaw
B:
codec_prefs_outgoing_offer = prefer: configured or pending, operation: intersect, keep: first or all, transcode: prevent
Asterisk sends INVITE to Bob			alaw / ulaw


Asterisk receives OK from Bob			alaw
B:
codec_prefs_incoming_answer = prefer: configured or pending, operation: intersect, keep: first or all, transcode: prevent

Asterisk sends OK to Alice			G722 / alaw / ulaw
A:
codec_prefs_outgoing_answer = prefer: pending, operation: intersect, keep: first or all, transcode: prevent

=> I would have expected alaw to be sent to A - but G722 / alaw / ulaw is sent and transcoding is active!


What did I do wrong?
Could you please add the correct configuration you expect to get the expected result alaw?



Thanks
Kind regards
Michael