Hey guys,

Got a bit of an interesting problem, I hope you can help me out - we've been pulling our hair out trying to find a solution to this and Comdial tech support hasn't had much to say except for changing boards out.

Here's the setup:

FX-11 96
Release: 198 or later
Feature set :17F
Services board: Srv3-11

As for boards, we've got:
S1: FXLST08
S2: FXVOIP-l
S3: FXLDS-16
S4: FXLDS-16
S5: FXLDS-16
S6: FXISTM-c16

The system is forwarding calls through the voip-l board to a hosted mp5000 system, then goes out through a pri in the colo. Except for the IST ports, which grab onsite copper lines.

And the problem:

Whenever a fax is sent in this particular room, with 6 digital extensions around it, it silences the call on ports 5 and 41 - which are on either side of the fax machine.

We've done this much so far in troubleshooting:
Changed the cabinet (we had a shipment of crap equipment at one point) - the problem disappeared for about 3 days then popped back up.
Changes Services board
We moved 41 out of that room, and replaced it with one on the same board as pt 5. The problem disappeared for about 3 days. Changed out port 5 to another port - that port then started to show the same problems.
We have changed out the IST board, port, moved it to another physical cable, still remained on those same ports.
Changed out digital board those stations are on and the services board.
We've changed out the fax machine with no luck.

Any help with this problem is greatly appreciated.

Thanks,
Nathan