DLP-545
: Detailed Level Procedure 363-206-305
Page 2 of 8 Issue 3, June 2000
DDM-2000 F
IBER
R
EACH
W
IDEBAND
S
HELF
2.
NOTE:
If one terminating end is equipped with
STS1E
circuit packs to provide
EC-1 service and the other terminating end is equipped with
DS3
circuit
packs, the DS3 transmission test is performed from the DS3 terminating
end. If the CIT and test-trmsn-t3: command is being used to
perform the test and you are at the EC-1 terminating end, log into the
DS3 end to perform the test using the test-trmsn-t3: command.
At the near-end
DDM-2000
, connect the CIT to the
CIT
jack on the User Panel,
if required.
Reference:
DLP-521
3.
NOTE:
Work orders, office records, or CIT ent-crs-sts1 or rtrv-crs-sts1
commands may be used to make or verify STS-1 cross connections.
At each shelf in the network, make/verify that proper STS-1 cross connections
have been made for each DS3 channel being tested
4. Are you using CIT and test-trmsn-t3 command to perform this test?.
If
YES
, continue with
Step 5
.
If
NO
, proceed to
Step 21
.
5. See Figure 1. If local tests are being performed, the fiber loopbacks at the
near-end
OLIU
s 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, STSX cross-connection 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
(ctrl t) command to return control of CIT to near end.
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