Lucent Technologies DDM-2000 OC-3 Installation Manual

363-206-204
Release 6 Installation Tests
Issue 9 October 1998
5-15
DS1/DS3 Verification Tests (Optional)
The following test verifies proper operation of the DS1 or DS3 transmission paths
between sites. Typically, the entire DDM-2000 OC-3 shelf will pass or fail this test,
indicating that the transmission path is good or bad.
The STS-1E circuit packs can not be tested with the test transmission commands
directly, thus the BBG6 (STS-1E) circuit pack must be tested with a MXRVO or
DS3 circuit pack. The BBG6 must be located at the far-end where the loopback
connections are made.
1. If a problem is isolated to the path, determine and correct the path problem
and repeat the system test.
2. If the path is trouble-free but a problem still exists, isolate and correct the
circuit pack, shelf, or/and cable problem(s). Repeat any of the installation
tests as necessary.
NOTE
:
If a valid DS1, DS3, EC-1 signal is applied to the DDM-2000 OC-3 and
then removed, the FAULT LED on the DS1, DS3 or EC-1 circuit pack will
flash. Press the UPD pushbutton on the SYSCTL to stop any flashing
LEDs.
3. Determine the transmission paths for each equipped function group. Figure
5-3 shows typical transmission configurations for an add/drop system
arrangement. Figure 5-4 shows typical configurations for a hubbing
arrangement. The actual add/drop and hub connections should be similar
to those shown.
4. DDM-2000 OC-3 Release 6 can be placed into the default or manual cross-
connect mode using the set-ne command. See the ent-crs or dlt-crs
commands in the 363-206-202,
DDM-2000 OC-3 Multiplexer User/Service
Manual
to enter the proper cross-connects for individual applications.
5. Log out of the RT site using the log
(out
) command.
6. Depending upon the system configuration, repeat this procedure at each
site that requires cross-connecting.
DS1 Verification Procedure
The activity in the following procedure is performed from the CO location.
In the following test, internal DS1 loopbacks are established in the DDM-2000
OC-3 shelf at the associated RT site. A DS1 test signal is internally generated
from the CO shelf and measured by the CO shelf. Refer to Figure 5-1.
1. Perform a remote login from the CO to the RT site, using the rlgn:tid
command.

Lucent Technologies DDM-2000 OC-3 Specifications

General

Brand	Lucent Technologies
Model	DDM-2000 OC-3
Category	Multiplexer
Language	English