I have a Stromberg Carlson 6 slot 1A2 key system that we were using to test 2564, 2565, 10 button and 20 button phones. We took it off the wall to add offices and put it back on the wall but now it doesn't work for the hold feature. Maybe we dropped it??? or we may not have it hooked up right??? Help we need to replace or fix it. Everthing else works fine on the unit. Please give us a quick reply

Vance