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Appendix C—Specifications
Electrical
Standards
The Door Answer Controller meets:
■ U.L. listing requirements
■ F.C.C. part 15, class B requirements
■ F.C.C. part 68 requirements
Electrostatic Discharge
Your AT&T Door Phone Controller complies with the ESD
requirements in BELL Pub 48002.
All user accessible connectors and controls have electrostatic
discharge protection.
Power Supply
The AT&T Door Phone Controller is powered by an UL listed
wall mount transformer with a strain relieved cord.
It functions over an input power range of 96 VAC to 129 VAC.
Your AT&T Door Phone Controller has a green LED power
indicator.
■
■
■
A flashing state of 2.5 per second indicates normal power to
the unit and normal microprocessor operation.
A constant ON state indicates a brown-out condition or
microprocessor failure.
A constant OFF state indicates there is no power to the unit.
Page and Talk-Back
Paging output power is 2 watts (continuous) @ 3.35 Vrms (sine
Amplifier
wave). Talk-back input sensitivity:
speaker leads, tip and ring output
Auxiliary Alert Relay Contact Closures rated at 1
Door Latch Contacts Relay Contact Closures rated at 2
with 600 microVrms at the
level will be -17 dBm.
amp.
amps.
Specifications C-1