this is to install asterisk2billing and to upgrade free pbx on an existing centos server running cpanel and fedora on a 64 bit machine and 2 zaptel voice cards.
asterisk and free pbx are already installed configured and working
Also as mentioned in IM chat. Setup fax to pickup from unconfigured zaptel voicemodem pstn card.
Caller will call in, system will play message to tell user to enter extension number, then it will ask user for optional pin. (2 voicemail/fax boses will not have pins) then it will play generic box message saying to leave message after tone or start fax... then fax or email will be routed to user.