Ricoh 1224c fax issue

[leo34staffs]

Hi Guys,
I have a problem with said machine at a customers where the machine is on a shared phone/fax line, the user does a manual receive, what happens is that when they press manual recieve, the machine does its handshaking up to the point where the csi is displayed on the screen (senders ID) it continues to communicate for about 30 secs then just diconnects the line.

I have tried disabling v34 protocol, upping the rx attenuator and turning off ecm plus increasing the error threshold and still it fails, it sends ok but not receives.

I have plugged in a new fax machine (Ricoh stella model) and it worked immediately.

I have also changed the ncu and the main fax board!!!
This setup did work until recently.

Any suggestions? apart from selling em a new machine??

[Fearless V K]

This may sound stupid, but is the fax line plugged into the 'line' jack, or the 'phone' jack on the machine?

[RicohPRO]

Just out of curiousity what is the fax line shared with? a credit card machine?