GCA70-248

Other Advanced Features

Data Interface Unit

The Data Interface Unit, or DIU, is an optional external device that may be part of your system installation. It provides connections for both your telephone and an IST device such as a standard single-line telephone, a FAX machine, a data modem, a cordless telephone, or an answering machine.

If the installer has arranged your station in this manner, you can switch between your telephone and the IST device by pressing the DATA button that the installer has programmed on your telephone. The light associated with the DATA button provides status indications for your reference.

DATA Light

Telephone Status

 

 

OFF

Your telephone is selected for operation

On Green

Your IST device is selected but is idle

On Red

Your IST device is selected and is busy

Flashing Red

Your IST device is ringing

￿To select your telephone if the DATA light is on or is flashing,

PRESS the DATA button. If a call is in progress on the IST device, it transfers to your telephone if you have your telephone handset lifted or have your telephone in speakerphone mode. If you do not, the call drops.

￿To select the IST device if the DATA light is off,

PRESS the DATA button. If a call is in progress on your telephone, it transfers to the IST device if the device is off-hook; otherwise, the call drops. Your telephone still provides visual messages and indications even though its voice path is routed to the IST device.

Non-LCD Speakerphone Station User’s Guide

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Vertical Communications GCA70-248 manual Data Interface Unit, To select the IST device if the Data light is off