AT&T Door Phone Controller - Manual (Page 26)

AT&T DOOR PHONE
CONTROLLER
(Secure Location)
MODULAR
PHONE
22-24 GAUGE
WIRE
CABLE
AUX. ALERT DEVICE
TELEPHONE EXTENSION
22-24 GAUGE
WIRE
DOOR AJAR
SWITCH
EXISTING
DOOR SPEAKER
PHONE
LINES
W/ PUSH BUTTON
SHIELDED TWISTED
PAIR SPEAKER
WIRES
TELEPHONE
EQUIP. 22-24 GAUGE
ATTENDENT
POSITION ELECTRIC
WIRE
DOOR STRIKE
PLATE DEVICE
Figure 2-2. Typical AT&T Door Phone Controller Installation
2-10 Installation Procedures