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.
Содержание DDM-2000 OC-3
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