Administrator's Guide

ISDN telephones (7500s & 8500s)
Issue 5 October 2002 1425555-233-506
ISDN telephones (7500s & 8500s)
The Integrated Services Digital Network (ISDN) phones include both the
7500-series and the 8500-series telephones. Each of these phones uses the ISDN
communications through a 4-wire “T”-interface.
7505D ISDN-BRI telephone
The 7505D telephone serves as a telephone if it is equipped with a Voice Only
Module (VOM). As a telephone, it offers programmable buttons, fixed feature
buttons, a Message light, touch-tone dialing, and a built-in, programmable
speakerphone or SPOKESMAN loudspeaker.
The 7505 can be equipped with an optional Asynchronous Data Module (ADM)
that provides the user with simultaneous voice and data capabilities. The 7505
equipped with the ADM offers the same voice capabilities as the 7505 equipped
with the VOM, plus it allows you to attach data terminals or personal computers
to send and receive data through the digital network.
7506D ISDN-BRI telephone
The 7506D serves as a telephone if it is equipped with a VOM. As a telephone, it
offers programmable buttons, fixed feature buttons, a Message light, touch-tone
dialing, and a built-in, programmable speakerphone or SPOKESMAN
loudspeaker.
The 7506 can be equipped with an optional Asynchronous Data Module that
provides the user with simultaneous voice and data capabilities. The 7506
equipped with the ADM offers the same voice capabilities as the 7506 equipped
with the VOM, plus it allows you to attach data terminals or personal computers
to send and receive asynchronous data through the digital network.
7507D ISDN-BRI telephone
The 7507D serves as a telephone if it is equipped with a VOM. As a telephone it
offers programmable buttons, fixed feature buttons, Message light, touch-tone
dialing, and a built-in, programmable speakerphone or SPOKESMAN
loudspeaker.
The 7507 can be equipped with an optional Asynchronous Data Module that
provides the user with simultaneous voice and data capabilities. The 7507
equipped with the ADM offers the same voice capabilities as the 7507 equipped
with the VOM, plus it allows you to attach data terminals or personal computers
to send and receive data through the digital network.