Re: Question about GE 2-9451 4-line phone w/intercom

"Dale Farmer" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]

>     Check to see if you have a pair flipped somewhere.

SOLUTION:  The customer had installed a DSL filter on the
line cord, even though neither of the CO lines has DSL on it.
Removing it fixed the problem.  The filter was blocking the
inter-station signaling.