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ISDN Asynchronous Data Module (ADM)
ISDN Asynchronous Data Module (ADM)
The ISDN ADM is used in conjunction with an ISDN 7505, 7506, or 7507 voice terminal to pro-
vide integrated voice/data. With the ADM, an attached data terminal or personal computer can
send and receive data through the switch. This unit mounts in the base of the voice terminal and
is used instead of the Voice Only Module (VOM). The VOM cannot be upgraded to an Asynchro-
nous Data Module.
Physical Description
The ISDN ADM is a printed circuit board built into the ISDN 7505, 7506, and 7507 Voice
Terminal.
Data and EIA RS-232-D connections.
An EIA RS-232-D and an 8-pin modular jack are located on the back of the ADM.
Features
The ISDN ADM offers the following features:
Speed
Data rates of 0.3, 1.2, 2.4, 4.8, 9.6, and 19.2 kbps
Full-duplex
Asynchronous
DATA/SEND/OFF button with two indicator lights; allows alternative data call setup from
dial pad
Data call setup from an ASCII keyboard through an EIA RS-232-D interface
Ability to change options without dropping the data call
Automatic or manual answering of incoming calls
Remote and local loopback test
Local mode operation for option setting and call control via terminal keyboard
Hayes AT interface support
Power Requirements
Refer to the Power Requirements description in the ISDN 7505, 7506, and 7507 Voice Terminal
section of this manual.
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