Paradyne COMSPHERE
3610, Operator'S Manual

Page: 94 / 310

COMSPHERE 3600 Series Data Service Units
4-14 July 1999 3610-A2-GB91-90
Test Branch
The Test branch provides extensive testing capabilities
for the DSU, the DDS circuit, the DBM (if installed), and
the backup circuit. When the tributary DSU receives a test
request from the control DSU, it aborts any locally
initiated test in progress.
There are a number of tests that can be initiated,
depending upon your configuration. See Table 4-5 to
determine the appropriate test(s) to run for a DSU.
Refer to COMSPHERE 3600 Series Data Service
Units, Models 3610 and 3611, Dial Backup Module and
SNA Diagnostic Interface Options, Applications Guide to
determine the appropriate test(s) to run for a DBM.
NOTE
The term session-disruptive is
used throughout this section. To
understand what is meant, it
should be noted that some
standard tests to a tributary DSU
are in-band. Running a test can
affect your application data or
may cause your application
session to be dropped depending
upon the protocol, front-end
processor, time-out parameters,
etc. since no data or
acknowledgment messages will
be transmitted while the test is in
progress.
For a single-port configuration with nondisruptive
diagnostics and/or rate adaption, you can request a Port
test on the active core only. In addition, you can request
an Aggregate Data test for both the active and the primary
core. However, during an Aggregate Data test, you lose
the in-band secondary channel transport.
Local Loopback (LL) and End-to-End (EE) tests can
only be run on the aggregate data path. Tests that are
performed on the aggregate data stream test the entire
bandwidth. Therefore, during aggregate tests, in-band
secondary channel transport communication is lost. For
tests such as aggregate Digital Loopback (DL), the control
DSU reports a No Response or a TribTimOut alarm for
downstream devices.
When a test is being run on a DSU or DBM, a message
will be displayed in the Device (Devic) Health and Status
subbranch. Refer to
Appendix C .
NOTE
When performing an aggregate
test, the DTE lead status LEDs
reflect the aggregate data stream
internal to the DSU. It does not
reflect an EIA rate.
A point-to-point control or tributary, a multipoint
control DSU, or a point-to-point tributary can run all of
the tests on the Test menu. A multipoint tributary cannot
run any remote tests or a Bit Error Rate Test (BERT),
Digital Test (DT), or End-to-End (EE) test.