AT&T DEFINITY 7100 series Bedienungsanleitung PDF herunterladen (Seite 34)

FEATURES

Feature

Night Service

Off-Premises Station

PC PBX Connection

Personal Central Office

Line

Power Failure Transfer

Hardware

A ringing device and one port on a TN742,

TN746B, or TN769 analog line.

Cross-connecting capabilities and one port on

a TN742, TN746B, or TN769 analog line cir-

cuit pack, or a TN767 DS1 interface circuit

pack.

A port on a TN754 digital line circuit pack for

each PC.

One port on a TN747B CO trunk circuit pack

or TN767B DS1 interface circuit pack for each

CO, FX, or WATS trunk assigned as a PCOL.

One emergency transfer panel per five or six

trunks assigned to Power Failure Transfer.

Two panels are available:

Z1A panel — Each unit serves up to

six power failure transfer terminals.

A ground-start key is required at

each preselected voice terminal

when ground-start trunks are used.

PORTA SYSTEMS® model 574-5

panel — Each unit serves up to five

failure transfer terminals and pro-

vides ground-start or loop-start.

808A emergency transfer unit.

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AT&T DEFINITY 7100 series Bedienungsanleitung Seite 34