AT&T System 85 manual display terminal is not FCC registered

ISDN 7506 Display Terminal

Distance Limitations

The maximum signaling distance from the port board to the work location jack based on DIW 24 AWG cable is:

Terminating resistor in work location—1900 feet

Terminating resistor in satellite closet—1600 feet

Power Requirements

The 7506 display terminal requires an auxiliary power supply. The power supply can be provided at a central location or may be collocated with the 7506 display terminal. If the auxiliary power supply fails or loses its power, the 7506 display terminal will provide basic voice service with the phantom power provided by the switch.

Terminating Resistor

A 440A4 Terminating Resistor adapter is required with the 7506 display terminal. The 440A4 can be located at the work location or in the satellite closet.

Power Failure Operation

The 7506 display terminal cannot be used as an emergency station during power failure transfer conditions.

FCC Registration

The 7506 display terminal is not FCC registered.

Hearing Aid Compatible

This voice terminal is compatible with the inductively coupled hearing aids prescribed by the FCC.

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