If your DSS button lights up when you hit intercom, you probably programmed the DSS button for your 'own' extension...ie the button calls your own extension. So it will light when your station is not idle. Lifting the handset and then pressing your 'own' DSS button results in an all-call page. Pressing it when idle just seizes the intercom. Of course, DSS buttons are most useful when programmed to intercom other stations...

The Class Of Service section of the manual looks a little greek because it is intended to supplement a certified Comdial tech in servicing the system. The system is old, but there are numerous techs like jwooten, Carl, myself, and pretty much all the other mods on this board who can help you program for a modest fee. Use the PM feature to contact a tech for assistance.

Hackbarth Communications, L.L.C. - Serving South Central Wisconsin's Telecom Needs