Ds3 Tests, Sts-1 Tests, And Optical In-Bay Tests - Nortel SONET AccessNode Manual

DS3 tests, STS-1 tests, and optical
in-bay tests
This chapter describes how to test DS3 or STS-1 and optical equipment at a
system network element (NE) supporting DS3 or STS-1 interfaces or a mix of
DS1, DS3, and STS-1 interfaces.
You can test NEs that are not equipped with any DS1/VT or DS3 mappers or
STS-1 interface cards by installing temporary DS1, DS3, STS-1 equipment
and using the appropriate procedures. However, it is recommended that you
use DS3 or STS-1 test procedures since they can be performed in a shorter
period of time than the DS1 tests. Because there are no connections to a
DSX-3/STS-1 cross-connect panel, digital signal continuity tests are not
required. Because there is no protection mapper present, digital protection
switching is not required. As a result, only optical receiver sensitivity and
optical protection switching tests must be performed on systems not normally
equipped with DS1s, DS3s, or STS-1s.
These procedures cover local in-bay tests on equipment located at a single NE
and can form the basis for customer acceptance tests. Unless otherwise noted,
one technician can perform these tests. End-to-end testing (between two NEs)
of optical and digital equipment in a universal configuration is described in
System Testing Procedures, 323-3001-222, in this volume.
Note 1: The Series 800A Outside Plant Cabinet and single-ended systems
do not support DS3s.
Note 2: STS-1 tributaries are supported only on a TN_BLSR shelf.
AccessNode Site Testing Procedures 323-3001-221 Issue 2.0
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