Does mIsdn or vISDN allow for bearer capability of audio 3.1


As subject states. Normal ISDN bearer capability is SPEECH but I have an app which outputs AUDIO 3.1K bearer capability and zaptel or libpri rejects the call before * sees it or at least I presume so because pri intense debug span 1 does not produce output.

I guess a different way of putting it is: where is the bearer capability set, zaptel or libpri or bristuff or misdn or visdn?