A:AnswerLinda - When you see INTERCOM TO, press 1 or 2 (which corresponds to Handsets 1 and 2); or, if you want to intercom the base from a handset, press 7.
A:AnswerThere is a handset tab, located in the cradle, which needs to be adjusted when the base is wall mounted. That is why your receiver is falling. Look above the plunger in the cradle for the handset tab.