Issue 5 November 2000
363-206-208
Stand-Alone (Local) Installation Tests for the DDM-2000 OC-12 Multiplexer
Lucent Technologies - Proprietary
See Notice on first page
Parallel and Miscellaneous Discrete
Telemetry Test
NOTE:
Parallel telemetry is not supported in OC-12, Release 7.
Description
This test verifies correct operation/wiring of the parallel and miscellaneous telemetry at
a central office shelf, when provided.
NOTE:
When a system sets a parallel telemetry point, it also sets its corresponding sys-
tem identification (SID) point. The SID point that is set is the same as the
DDM-2000 OC-12’s shelf number. For the following tests, verify that the appropri-
ate SID point is set.
Use the following procedure to verify parallel telemetry wiring by activating alarm points
and having the maintenance center observe for their appearance or by checking for
activation with a voltmeter.
Procedure
NOTE:
This test can be terminated at any time with the CANcel or DELete key.
(1) If the maintenance center interface is established skip to step 3.
(2) Setup to test alarm interface with a voltmeter.
a. Connect the Output - Common (See Table 6-2 on page 6-31 and Table
6-3 on page 6-32) from the alarm cable to ground.
b. Connect the negative lead of the voltmeter to -48 volts.
1. If you cannot access -48 volts powering the shelf any other way
disconnect J2 from P2.
2. Connect the negative lead of the voltmeter to green wire in J2
(3) Either:
a. Alert the maintenance center to observe for a specific alarm bit.
or
Summary of Contents for DDM-2000 OC-12
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