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3. When a conversation is finished, press the ON/OFF switch to release it. Note that if both parties hang up before
the TPS4 is turned off, the red DISCONNECT LED will illuminate and the call-in tone will sound (returning the
switch to the OFF position will extinguish both). Return the room selector switch to OFF or intercom communica-
tion will resume.
Calling a Staff Location
1. Press the ON/OFF switch on the TPS4 and pick up the console handset. Select the station to be called by placing
the appropriate switch on the room selector panel in the “C” position.
2. Call the staff location by pressing the CALL button, which sends a call tone to the station loudspeaker. Wait for
the other party to respond by picking up the handset.
3. When the conversation is finished, follow step 3 under Receiving a Call From a Staff Station.
NOTE: Alternate Method - Call the station using the INTERCOM function of the MCP35A, then follow steps 2
and 3, under Receiving a Call From a Staff Station (page 6).
Calls Between Staff Stations
Two staff stations can communicate privately after being connected by the operator at the console (place each
room selector switch in the “C” position). The console operator may leave the conversation by hanging up the
handset. As long as the two staff handsets are off hook, the green IN-USE LED will illuminate. When the handsets
are returned to the switch hook, the DISCONNECT LED will illuminate, and the Call-In Tone will sound at the
MCP35A. At this point the operator resets both the room selector panel switches to OFF and presses the
ON/OFF switch on the TPS4 to release it.
Figure 3 - Wiring Diagram, CPP Handset Communication Feature
