3.22
The Data Interface Unit
The Data Interface Unit (DIU) is a device connected to a digital station port. The DIU provides
connection for a digital multiline telephone and another device such as an Industry standard telephone
(IST), FAX, or modem. The DIU switches the voice path from the DSU to either the digital telephone or
the IST telephone by pressing a button on the digital telephone.
When the DIU is in the digital mode, the digital telephone will function fully and the IST telephone will
not function at all. When the DIU is in the IST mode, the IST functions fully and the digital telephone
will not have a voice path; however, the digital telephone will continue to receive LED and LCD
messages and send certain button messages.
The first step in any programming sequence is to enter the base level. Once in this mode, you can dial the
feature code for any desired configuration. Enter the base level with the following procedure: press
INTERCOM then dial
✳
#746
✳
. When you want to end the programming, press the SPEAKER button
to end the programming procedure and return the system to normal operation.
3.22.1
Programming Data Buttons
Description:
After you install a data interface unit, you must program a data button on the multiline
telephone connected to the DIU.
To Program:
1. Dial 56 for button mapping.
“BUTTON MAPPING”
2. Dial 18 for data button.
“ASSIGN DATA”
3. Select button to be programmed with data button
—press A1–A14, B1–B10
4. Select station ports to be programmed
for station 10–57, dial 10–57 or press C10–C57.
5. Dial
✳
for next data button assignment
—OR—
Dial
✳✳
for next button mapping feature
—OR—
Dial
✳✳✳
for next configuration mode.
IMI66–132
DSU II Digital Telephone System
3 – 160 Programming The DSU II System
Summary of Contents for DSU II
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