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

Station tests help determine if a station operates correctly when connected to
a loop and line circuit group.

Manual line testing

The switch operator performs manual line tests on line circuits, loops, and
stations. The switch operator tests line circuits and loops on a separate basis.
The results of the test appear at a VDU to the switch operator immediately
after the test.
Manual line tests occur as part of routine maintenance when the system
generates a customer report or an ALT failure occurs. Manual line tests occur
at the LTP level with any of the four levels of the LNS subsystem. The four
levels of the LNS subsystem are ALT, LTP, LTP manual (LTPMAN), and LTP
line test access (LTPLTA).
Manual line tests at the ALT level defines one line on which tests occur
immediately. At the other three levels, manual tests occur when the switch
operator places the line on which the test occurs in the control position. The
switch operator controls this line, which the switch operator can manipulate.
The user must post a line before the user places the line in the control position.
Product-specific test tools

Line maintenance cutover (LMCUT)

The Automatic Board-To-Board Testing (ABBT) feature uses the Line
Maintenance Cutover (LMCUT) facility, with feature package NTX05. The
ABBT, during commissioning, uses LMCUT to transfer or cutover in-service
lines from a current switch to a DMS switch. This ABBT feature also provides
message recording of all the LMCUT command executions in a progress file.
The LCMs support the LMCUT commands. The LMCUT commands are
valid only on LCMs when a DN cuts over the switch. The cutover occurs
according to DNs or to LENs. The commands for cutover by DN and LEN are
separate with the exception of the commands OPRTCO, RLSCO, and NOBST.
The LMCUT commands allow the user to do the following:
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set or query the cutover mode of the switch (by DN or by LEN)
enable, disable, clear, or query the progress message recording
operate, release, or verify the cutover relays on a range of DNs or LENs
operate, release, or query the HOLD relay setting on a drawer
DMS-100 Family OPM Maintenance Manual XPM14 and up
Trouble isolation and correction 10-11