Manual Line Tests; Product-Specific Test Tools; Line Maintenance Cutover (Lmcut) - Nortel DMS-100 Series Maintenance Manual

8-8 Trouble isolation and correction

Manual line tests

The switch operator performs manual line tests on line circuits, loops, and
stations. The switch operator tests line circuits and loops separately. A
MAP terminal displays the immediate test results to the switch operator.
Manual tests of lines occur as part of routine maintenance, after the system
generates a customer report, or after ALT failure occurs. Manual line tests
occur at the LTP level. The manual line test uses any of the four levels of
the LNS subsystem: ALT, LTP, LTP manual (LTPMAN). The manual line
test also uses the LTP line test access (LTPLTA).
Manual line testing at the ALT level defines one test line immediately.
Three other levels are available for manual line tests. At these three levels,
manual tests occur when the switch operator places the required line in the
control position. The switch operator controls this line and can manipulate
the line. Post the line before you place the line in the control position.

Product-specific test tools

Line maintenance cutover (LMCUT)

Feature package NTX057 allows the Line Maintenance Cutover (LMCUT)
facility and the Automatic Board-to-Board Testing (ABBT) feature during
commissioning. This feature allows LMCUT and ABBT to transfer or
cutover in-service lines from a current switch to a DMS switch. This feature
also provides message recording of all performances of the LMCUT
command in a progress file.
The line concentrating modules (LCM) support the LMCUT commands.
The LMCUT commands are valid when the directory number (DN) cuts
over the switch of LCMs. The DNs or LENs determine the occurrence of
the cutover. The DNs and LENs that experience cutover are separate. The
OPRTCO, RLSCO, and NOBST commands are the same commands for the
DNs and LENs that experience cutover.
The LMCUT commands allow the user to perform the following:
297-8381-550 Standard 02.02 April 1999
set or query the cutover mode of the switch (made by DN or LEN).
enable, disable, clear, or query the progress message recording.
operate, release, or verify the cutover relays on a range of DNs or on a
range of LENs.
operate, release, or query the HOLD relay setting on a drawer.