Telephones And Consoles - AT&T MERLIN LEGEND System Reference Manual

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Telephones and Consoles

MLX Telephones

5-10 Telephones and Consoles

Several different analog and single-line telephones can be used with the system;

the only digital telephones that can be used with the system are the digital/lSDN

(MLX) telephones.

An analog or digital multiline telephone located in a different building but

within 1000 feet of the control unit requires an IROB (in-range out-of-

building) protector at each building entrance.

There are four telephones in the MLX telephone line, all of which support the

Integrated Services Digital Network (ISDN) services that can be used with the

Some features are common to all MLX telephones:

programmable line and feature buttons with two associated lights (red and

Note: An MLX-20L telephone used as a QCC has no programmable

fixed-feature buttons (four have a red or green LED)

red message-waiting LED

built-in speakerphone

volume control for speakerphone, handset, and ringer

user reference card tray with feature and programming codes and directory

optional internal MFM to connect to tip/ring (T/R) equipment and alerting

Note: An MLX-20L telephone used as a QCC cannot have an MFM.

two-position adjustable desk stand

four-pair modular line cord

MLX telephones with display have two additional features:

display-associated buttons