AT&T Door Phone Controller - Manual (Page 69)

AT&T DOOR PHONE
CONTROLLER BACK PANEL
TO DOOR BELL BUTTON
TO C.O.
(TELEPHONE LINE)
TERMINAL BLOCK "HARD
WIRE" CONNECTOR
TO DOOR SPEAKER
TO DOOR AJAR SWITCH
TO REMOTE DOOR OPEN SWITCH
TO DOOR STRIKE PLATE DEVICE
TO AUXILIARY ALERT DEVICE (DOOR BELL/CHIME)
OPTIONAL
TELEPHONE SYSTEM
TRUNK PORT
(LOOP START) STATION
P O R T
TO C.O. TRUNK PORT STATION
PORT
Figure 6-2. Connecting the AT&T Door Phone Controller to a Telephone System
With Shared Trunk Port
6-4 Installation - No Dedicated Trunk/Station Port