Installing the Model 3550 DSU
2-11
3550-A2-GB20-40
July 1999
Connecting Port 2
For the EIA-232 cable, install as described above.
For the V.35 cable, install the V.35 adapter, then the
V.35 DTE cable as follows (refer to
Figure 2-7
).
"
Procedure
1. Reconfigure the port to match the interface, V.35
in this example.
2. Connect the 25-pin plug end of the V.35 adapter to
Port 2.
Tighten the holding screws.
3. Connect the plug end of the 34-pin V.35 DTE
cable to the other end of the V.35 adapter.
Tighten the holding screws.
4. Connect the other end of the DTE cable to the
appropriate port on the computer or DTE.
Tighten the holding screws.
Refer to
Chapter 4
to learn how to reconfigure the
DSU’s port(s).
Verifying Operation and
Testing Connections
Verification testing should be performed after any
installation.
After installing and configuring the circuit (including
control and tributary DSUs, the DDS network, the DBMs
and their dial connections), perform the following series
of tests from the control DSU to verify network operation
(using either the DCP or NMS).
Verifying Network Addresses
Access the DSU’s identity (ID) subbranch for each
tributary DSU to ensure that the DSUs are properly
addressed. Refer to
Chapter 5
for an example using the
DCP, if needed.
"
Procedure
1. Select Remot (Remote branch).
2. Enter the tributary’s network address.
3. Select Stat (Status branch).
4. Press the
key until ID appears.
5. Select ID.
6. Press the
key until Network Addr appears.
7. Verify that the correct address has been entered.
Repeat this procedure for each tributary DSU in the
network.
Verifying the Network
Perform a Digital Test on the DDS circuit to ensure
that the network is functioning.
"
Procedure
1. Select Test (F3).
2. Select DSU (F1).
3. Press the
key until DT appears.
4. Select DT.
5. Select Start (F1).
6. Select a port.
7. Enter the address of the remote DSU.
8. Select the amount of time you want the test to run
in hours: minutes: seconds (hh:mm:ss).
•
Press the
or
key to move the blinking
cursor to the digit to be changed.
•
Press the F1 (
) key to increment the digit
(1 through 9).
•
Press the F2 (
↓
) key to decrement the digit.
9. Select Enter (F3). Please wait appears as the DSU
starts the test.
10. When Command Complete appears, press the
key.
11. Select Displ (F1) to display the results of the test.
Table 4-6
in Chapter 4 shows the information
received from a Digital Test.
12. Press the
key to scroll through each result.
Содержание Comsphere 3551
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