DLP-553: Detailed Level Procedure 363-206-285
Page 3 of 20 Issue 2, February 2000
DDM-2000 OC-3 MULTIPLEXER
3. 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. Log into the far-end DDM-2000 terminal, either locally or by using the
rlgn command, if possible, 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.
4.
!
CAUTION:
Execution of switch commands may affect service. Check local
procedures before performing switch commands.
NOTE:
If this transmission test is to be performed for each path in the end-to-end
network, the switch-path-sts1: command must be used at some of
the DDM-2000 nodes to switch paths for each test. If FT-2000 is part of
the network, the FAULT-Switch-Path-STS3 commandmustbeused
at the FT-2000 Primary DRI node(s) if the FT-2000 secondary path and
the DDM-2000 DRI connections to the FT-2000 secondary node are to be
tested. Up to four tests may have to be performed for each DS3 circuit if
all protection paths are required to be tested. See Figures 3 through 14.
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