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Maintenance Description
Issue 3 June 2001
9-37
Tests 9
Transmission Tests 9
Technicians can use DDM-2000 OC-3 Multiplexer internal testing capabilities for
installation and manual troubleshooting. DS1 and DS3 test signal generators and
detectors are integrated in the system, eliminating the need for external test
equipment to do DS1/DS3 transmission testing.
The DDM-2000 OC-3 Multiplexer lets technicians test specific signals and system
components. For example, technicians can manually enable the integrated test
signal generators and detectors for a DS1 or DS3 low-speed interface. These
signal tests can be run selectively in the multiplex or demultiplex direction. Refer
to the test-trmsn commands in Section 11, "Commands and Reports."
Automatic Turnup Tests 9
Automatic turnup tests are mechanisms that allow rapid turnup of DDM-2000
OC-3 systems without the use of external test equipment.
Automatic turnup tests are not currently available for path switched ring
applications but software for a nonring release can be used to perform local
equipment and local wiring cross-connect tests. Manual automatic turnup tests
can be done using the procedures listed in the TOP section of this manual
(Volume II).
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