[Asterisk-Dev] LIBPRI/Zaptel

[moritz winterberg]

Hi,

I would like to provide more PRI information such as TON/NPI and PRI
hangupcause within the * Variables. To use them in extensions.conf.

Now my C knowledge is just starting to grow and it turns out to be very
tough to find out the way those kind of information could take from
libpri (q931.c/libpri.h) over channel (chan_zap.c/channels.h) to
extensions.conf-ready ${VARIABELS} which are set in pbx.c as far as I
could figure out. 
So I would be very glad if someone could give me any hint or insight
into this source code structure.

thanks

Moritz