Vertical Communications GCA70-248 - Manual (Page 69)

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 61
GCA70-248 Other Advanced Features