Lucent DDM-2000 OC-3 User And Service Manual page 795

DLP-510
: Detailed Level Procedure
Page 1 of 8
Perform DS1 Transmission Test
1.
NOTE:
This procedure may be used to perform individual DS1 transmission tests
in the mux (toward the fiber) or demux (toward the DSX or T1 lines)
direction. When this procedure is being used to perform end-to-end DS1
tests, it is assumed that the complete end-to-end system has already
been tested and that only a particular DS1 port is being tested at this
time. It is further assumed that the DS1 or T1 options (DS1/DS1PM or
T1EXT circuit packs) and DS3 options (TMUX circuit packs) have been
set correctly (using the set-t1: and set-t3: command) at both ends
of the circuit being tested. The rtrv-t1: and rtrv-t3: command may
be used to check for proper DS1 or DS3 option settings. Ensure proper
DS1 line coding settings (AMI/B8ZS) at DS1 ends of the circuit.
NOTE:
Transmission tests in the mux direction may be local or end-to-end tests
(see Figure 1). Transmission tests in the demux direction may be local
cross-connect tests (see Figure 2). The Commands and Reports section
of this manual, under TEST-TRMSN-T1, gives an explanation of
commands.
NOTE:
This test can be performed either with a CIT and the automated test
command test-trmsn-t1: or with a suitable low speed test set (such
as a KS-20775, L1 DS1 Error Rate Test Set, a KS-22331, L1/KS-22332,
L2 DS1/DS1C/DS2 Error Rate Test Set, or M13 Error Rate Test Set).
NOTE:
When this procedure is used to do end-to-end tests, one DDM-2000 shelf
will be referred to as the near end and the other shelf as the far end.
These designations are arbitrary; either shelf can be the near-end or the
far-end shelf.
DDM-2000 OC-3 M
Issue 2, February 2000
ULTIPLEXER
363-206-285