[asterisk-users] codec not in channel variables

[Stanisław Pitucha]

Hi,
I'm trying to access audionativeformat / other codec variables in the hangup handler of a call (with ${CHANNEL(audioreadformat)}), but I get no response. Also 'core show channel ...' doesn't list those variables. Are they always set by asterisk, or only in some scenarios? It's a simple SIP-SIP call with audio passing through asterisk, same codecs on both sides.
I see that with ast-1.4.11.

Thanks for ideas,
Stan