Lucent Technologies DDM-2000 OC-3, User & Service Manual

Page: 2117 / 2536

DLP-511
: Detailed Level Procedure 363-206-285
Page 3 of 8 Issue 2, February 2000
DDM-2000 OC-3 M
ULTIPLEXER
4. Are you using CIT and
test-trmsn-t3
command to perform this test?
If YES, then continue with Step 5.
If NO, then proceed to Step 22.
5. Are you testing DS3 or TMUX circuit packs?
If DS3, then continue with Step 6.
If TMUX, then proceed to Step 10.
6. See Figure 1. If local tests are being performed, the fiber loopback at the
near-end OLIU must be in place. If end-to-end tests are being performed, do
ONE of the following:
a. NOTE:
When an end-to-end DS3 test is run in the mux direction and an
external loopback is established at the far end, provision the far end
DS3 for CC mode with no AIS
(
set-t3:address:mode=cc,ais=no
). Otherwise, if the VMR
mode is used, then only errors in the receive direction will be
monitored and the system may not recognize that a loopback is up.
Connect a patch cord from the OUT jack to the IN jack at the far-end
DSX-3 or STSX cross-connect point associated with the DS3 channel to
be tested.
b. Use the
rlgn
command to log in to the far-end shelf and use the
opr-lpbk-t3:address
or
opr-lpbk-ec1:address
command to
loop back the DS3 or EC-1 port(s) at the far end. Use
logout
or
toggle
(Crtl T) command to return control of CIT to near end.
7. Are you doing this test in the mux or demux direction?
If MUX direction, then continue with Step 8.
If DEMUX direction, then proceed to Step 10.