Hey Skip, thanks for getting back so quick.

I'm from the DC area and am sitting in a PA site looking over their system. The phones dont even HAVE a key marked ICM...but there is one marked SPK. I'm sure thats the intercom button as well, however anything i dial comes back with a busytone. I've powered down...powered up and did the Init. program with # * and hold button twice.
Is the conformation tone suppost to be steady or busysignil-like?

Thanks again, Dave

Constant motion