COMSPHERE DualFlow Data Service Units
2-2
July 1999
3615-A2-GB20-40
CAUTION
The ac transformer contains a
3-wire grounding-type plug
which has a grounding pin.
This is a safety feature. Do
not defeat the purpose of the
grounding plug by modifying
it or by using an adapter.
Prior to installation, use an
outlet tester to check the ac
receptacle for earth ground. If
the power source does not
provide a ground connection,
consult an electrician to
determine another method of
grounding the DSU before
proceeding with the
installation.
Before connecting the DSU, you need to contact the
telephone company to coordinate your installation before
connecting the DSU to the DDS or Switched 56 kbps
network. The DSU can only be operated at the data rate
for which access to the DDS network is provided. In
addition, the DSU must be connected to the dial network.
Refer to the notice at the front of this guide to ensure
compliance with FCC, Bell Canada, and Canadian DOC
rules.
No on-site assembly of the DSU is required. However,
installation should not proceed if any of the following is
missing:
•
A power cord with table-top ac transformer
•
A 14-ft cable for connection to the DDS network,
with an 8-pin RJ48S modular plug on each end
•
A 14-ft cable for connection to the permissive dial
network, with a 6-pin RJ11C modular plug on each
end (feature number 3600-F3-503)
For programmable services, the following dial
interface cable should have been ordered.
•
Programmable (RJ45S) – an 8-pin modular plug at
each end (feature number 4400-F1-
54x)
For Canadian purchasers, an 8-pin RJ48S connector is
on one end while a 6-pin connector is on the other is
required (order feature number 3000-F1-006).
Contact your service representative if any of these
items is missing from the shipping container, or to order
the programmable dial interface cable.
Since your DualFlow DSU is equipped with a DBM,
you may need to change the DSU’s hardware straps before
installing the DSU.
How to Change
Hardware Straps
HANDLING PRECAUTIONS
FOR
STATIC-SENSITIVE DEVICES
This product is designed to protect
sensitive components from damage
due to electrostatic discharge (ESD)
during normal operation. When
performing installation procedures,
however, take proper static control
precautions to prevent damage to
equipment. If you are not sure of the
proper static control precautions,
contact your nearest sales or service
representative.
The Model 3615 DSU has a switch located behind its
diagnostic control panel (DCP). This switch contains two
straps, one that controls the permissive or programmable
connection for the DBM, and one that controls the
frame-to-signal grounds.
Table 2-1
shows the DSU’s
switch settings. Refer to
Figure 2-1
and follow these steps
if you need to change one of these straps.
"
Procedure
1. With your thumbs under the edge of the front
bezel, firmly press upward to lift the bezel from
the tabs securing it in place.
2. Swing the front bezel up and set the bezel aside.
3. Refer to
Table 2-1
to determine which switch
needs to be changed. Then, using a small
instrument, carefully change the position of the
switch.
4. Reinsert the front bezel’s hinge tabs into position
and swing the bezel down. Snap the bezel back
into place.
Summary of Contents for COMSPHERE DualFlow 3616
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Page 90: ...COMSPHERE DualFlow Data Service Units A 2 July 1999 3615 A2 GB20 40 ...
Page 91: ...DSU Menu A 3 3615 A2 GB20 40 July 1999 ...
Page 96: ...COMSPHERE DualFlow Data Service Units B 4 March 1999 3615 A2 GB20 30 ...
Page 130: ...COMSPHERE DualFlow Data Service Units Glossary 6 July 1999 3615 A2 GB20 40 ...
