Introduction - AT&T 7506 User Manual

Congratulations on the addition of an Asynchronous Data Module (ADM) to your AT&T
Integrated Services Digital Network (ISDN) set. Following our tradition of excellent quality and
high reliability, the ADM is designed to provide you with the latest in telecommunications
technology (Figure 1-1).
AT&T's ISDN voice terminals, with the addition of the ADM, provide you with simultaneous
voice and data communications capabilities in one unit. As a telephone, the ISDN voice terminal
offers programmable buttons, fixed feature buttons, and a message indicator. The addition of the
ADM allows attached data terminals or personal computers to send and receive data through an
ISDN network. This user's manual applies to AT&T's first National ISDN product, referred to as
Standard ISDN-1 (SI-1).* SI-1 is the firmware that supports the National ISDN-1 service
offering. The ISDN 7506 and 7507 terminals are fully compliant with the requirements specified
in the Customer Premises Equipment (CPE) guidelines document, Bellcore® SR-NWT-001953,
Generic Guidelines for ISDN Terminal Equipment on Basic Access Interfaces .
* SI-1 is compatible with National ISDN-1 switches.
FP-3 was designed for use with ADM on 5ESS Custom ISDN.
FP-1 and FP-2 were designed for use with ADM 1 hardware.
SI-1 or FP-3 can be installed into an older FP-1 or FP-2 (ADM 1) set if the ADM 1 circuit board is replaced with
an ADM 2 circuit board.

Introduction

657E
EIA-232-D
Interface
Voice and Data
(with ADM)
FIGURE 1-1
Rear View of Terminal with and without ADM
Voice Only
(without ADM)
Introduction 1-1