I have an old Asterisk@Home installation that I want to upgrade, possibly to Elastix. As it is now, I use a SPA3000 for PSTN inbound calls, for emergency (911) calls, and for backup outbound calls (normally outbound calls go through a VoIP provider). What I would like to do is use Elastix to receive faxes on the same POTS line that I use for inbound PSTN calls (keeping my SPA3000 basically as it is). So ideally when a call comes in on my POTS line, Elastix would quickly listen on the call to see if it is a fax. If it is a fax, Elastix answers. If it isn't a fax, Elastix ignores, and my SPA3000 sends the call to my auto-attendant. Do any of you know whether Elastix and my SPA3000 can share the POTS line that way?