2.18.3
Installing The Data Interface Unit
Unpack the Data Interface Unit (DIU) and check for the following parts:
•
Telephone line cord
•
Power cable with attached transformer.
Verify that the Digital Service Unit (DSU) contains software revision 17A or later. If you need
to upgrade the DSU software, see the section entitled “Software Cartridge.”
Installing The Mechanical Components
You can install the DIU in either a free-standing manner or you can mount it on a wall.
When mounting the DIU on a wall:
1. Select a location that is close to a standard 115 VAC electrical wall outlet. The location you
select should also be convenient to the digital telephone and the Industry Standard Telephone
(IST), FAX, or modem—whichever one you will be connecting to the DIU.
2. Once you have selected the location for mounting the DIU, mark two locations for the
mounting screws as follows:
a. make the first mark,
b. measure 3 13/16 inches horizontally from the first mark and make the second mark.
Figure 2–31: Mounting Dimensions
Digital Telephone System
IMI66–107
2 – 68 Installing The DSU
Summary of Contents for Air Impact DSU
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