# Fax;(

Hello

i think i have a simple issue, but still after 2 days hard reading
couldn’t get to solve it, pls help;
i have tdm400p (4 green channels -fxs) and fritz - isdn with chan_capi
(4 numbers) i need to have fax on it (i dunno if a Canon b820 it is
compatible?)… if i plug the fax in the channel (fxs-green) i don’t have tone
what is my ques is the formula of receiveng/sending faxes… …exten =>
fax…
let’s assume that the isdn number is 5555 and the zap extension for the
fax is 101… pls gimme a hint;

thanks

Lehel