AT&T Door Phone Controller Installation And Operation Manual page 51

NOT USED
NOTE: For Ground Start installations
see Figure 4-2b.
Figure 4-2a. Connecting Door Phone Controller to Standard Telephone Equipment
4-4 Installation - Dedicated Trunk Port
TO DOOR AJAR SWITCH
TO REMOTE DOOR OPEN SWITCH
TO DOOR STRIKE PLATE DEVICE
TO AUXILIARY ALERT DEVICE (DOOR BELL/CHIME)
TO C.O.
TO C.O.
AT&T DOOR PHONE
CONTROLLER BACK PANEL
TERMINAL BLOCK "HARD
WIRE" CONNECTOR
TO DOOR SPEAKER
TO DOOR BELL BUTTON
OPTIONAL
TELEPHONE SYSTEM
STATION
TRUNK PORT
PORT
TRUNK PORT
STATION
TRUNK PORT
PORT