General-Purpose Adapter - AT&T MERLIN LEGEND Release 3.1 System Manager's Manual

Adapters
NOTE:
The MFM uses one of the two channels when it is active. A channel carries a
voice or data call between the system and the extension. This means you
cannot use Voice Announce and Speakerphone Paging when an adjunct (such
as a fax machine) and an MLX telephone are in use at the same time. When
Voice Announce is in use, a person calling an MFM extension gets a busy
signal; a person attempting to call out from an adjunct extension with an MFM
does not get a dial tone. Also, an adjunct connected by an MFM cannot provide
a switchhook flash.
A qualified service technician sets up your MFMs to work with either an adjunct
or a supplemental alert.

General-Purpose Adapter

A General-Purpose Adapter (GPA) enables you to connect a tip/ring (T/R)
device—such as a single-line telephone, modem, or answering machine—to an
analog multiline telephone. The device must be touch-tone, not rotary, and you
must make calls from the analog multiline telephone, because the GPA has no
pulse or touch-tone detectors.
The switch on the back of the GPA lets you choose one of the following
services:
Basic. Use this setting to dial and answer calls on an analog multiline
telephone or to attach a T/R device such as a single-line telephone or a
fax machine. Incoming calls ring only on the analog multiline telephone.
Join. Use this setting to add a recording device or a single-line
telephone to a call that is in progress on the analog multiline telephone.
You cannot originate or answer calls on this setting.
Automatic. You can use this setting in two ways:
— For devices that answer calls, for example, an answering machine or
a modem (you need a programmed Auto Answer All button to allow
the device to answer calls automatically).
— For voice and data, which enables you to make and receive calls on
the telephone when the modem attached to the GPA is busy. You
cannot make or receive a data call while on a voice call.
NOTE:
When using a GPA set to Automatic, you must lift the handset before
using any feature that automatically turns on the speakerphone. These
features include Authorization Codes, Auto Dial, Last Number Dial,
and Saved Number Dial.
A GPA is not recommended for use with a fax machine. See "Fax
Machines," later in this chapter.
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System Components