Comdial Impact Dsu Instructions Manual

Figure 2–28: Detailing The ATI-D Dimensions
IMI66–107Digital Telephone System
Installing The DSU 2 – 61 

Connecting The Analog Terminal Interface
Connect the ATI-D per the diagram detailed on the following page. A grounding wire is not
required for operation; however, one is desirable for decreasing radio frequency interference and
electrostatic discharge susceptibility. The ATI-D housing provides a frame ground stud for this
purpose. Connect a #10 or #12, insulated, solid copper wire between this ground stud and a
reliable earth ground.
NOTE: You must connect both station ports to the ATI-D, even if you...

Figure 2–29: Interconnecting The ATI-D
Common Equipment Jack
PIN 1 No Connection
PIN 2 Odd Station (Tip)
PIN 3 Even Station (Tip)
PIN 4 Even Station (Ring)
PIN 5 Odd Station (Ring)
PIN 6 No Connection
Line Jack
PIN 1 No Connection
PIN 2 IST 2 (Tip)
PIN 3 IST 1 (Tip)
PIN 4 IST 1 (Ring)
PIN 5 IST 2 (Ring)
PIN 6 No Connection
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PIN Locations On
Jacks - Front ViewEarth
Ground
(Optional)
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Installing An OPX Long Loop Adapter For Off-Premise Service
As stated previously, the analog terminal interface is an on-premise device. You must use an
OPX long loop adapter if you wish to adapt the ATI-D to support an off-premise application. An
OPX long loop adapter connects to a single telephone line and can greatly extend the line’s loop
length (the Proctor Model 46222 adapter*, for example, can extend line length to 30,000 feet).
*Proctor & Associates Company, Redmond WA
CAUTION
When you connect an...

Figure 2–30: Installing The Long Loop Adapter
Earth
Ground
(Optional)
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CLIP TERMINALS
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Typical Station
Connector Block
ATI-D
Common
Equipment
Jack
IST Jack
Off-Premise IST Jack
OPX
Long Loop
AdapterOn-Premise IST Jack
Connect to station connector
jack on common equipment.
CAJS106
11 7 VA C
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IMI66–107Digital Telephone System
Installing The DSU 2...

Understanding The Programming Requirements
The ATI-D provides the interfacing capability required to connect most IST equipment to a
station port of an digital telephone system.
The IST provides basic intercom service coupled with the ability to access outside lines.
Through programming, the IST acts as either as an intercom-only telephone or as a full-featured
business telephone. You can program the station port through which the IST is being interfaced
either for prime intercom or for prime line...

ATI-D Distinctive Ringing
Intercom calls that ring at equipment connected through an ATI-D have a different cadence than
outside calls. Intercom ring cadence is: 1 sec. on, .5 sec. off, 1 sec. on, 3.5 sec. off. Outside call
ring cadence is: 2 sec. on, 4 sec. off. You can program disable this distinctive ringing feature to
make the intercom ring cadence the same as that for outside calls.
Through Dialing
You can program the station port that interfaces the IST for through-dialing if you wish or you
can...

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....

3. Install two #8 X 3/4-inch screws in the wall at the locations you marked in step 2. Tighten
the screws until the screw heads are 1/4-inch from the surface of the wall.
4. Place the DIU on the wall with the screw heads inserted into the slots provided on the bottom
surface of the DIU. Slide the DIU onto the screw heads until it is firmly attached to the
screws.
Figure 2–32: Installing The Mounting Screws
IMI66–107Digital Telephone System
Installing The DSU 2 – 69 

Making The Cable Connections
Four cable connections are required to the DIU—station line cord, digital telephone line cord,
IST/FAX/MODEM line cord, and power cable.
1. Disconnect the line cord on the digital telephone from the digital station port connector and
plug it into the connector labeled PHONE on the DIU.
2. Plug the line cord from the IST device you are installing with the DIU (such as a FAX
machine, or modem) into the DIU connector labeled FAX/MODEM.
3. Plug the transformer attached to one end...