[Asterisk-Dev] pass through g.723/g.729 as a b2b ua

[Ma Zhiyong]

Hi, Can I pass through all codecs including g.723/g.729 when I use *
as a b2b ua? Meanwhile I also want voicemail works.
My idea is that when * behave as a b2b ua, it use g.723/g.729
passthrough codec, when calls invoke into voicemail, swith the codec
to g.711.
So can I do that?