Nortel DMS-100 Series Maintenance Manual page 400

9-36 Trouble isolation and correction
Limits
Monitor access through a conference card has the following limits:
Test desk tests
A test desk is a special piece of test equipment that can test the line circuit or
the subscriber loop. The following types of test desks perform different tests
on the line circuit or the subscriber loop:
A test desk configuration appears in the following figure. Some of the
hardware that appears is optional. This optional hardware depends on the
test desk tests to perform.
297-8231-550 Standard 09.01 August 1998
Test desk receives reorder tone 120 ipm
— the MTA network is not available
— the line is hardware not assigned
— the line is ManB
— the line is line module BSY
— the line is in the PLO state
— the line is call processing BSY, but the state is not the talking state
— the line is installation BSY
— all conference circuits are BSY
The use of custom calling features cannot occur during the bridging of a
line.
If a custom calling feature is active on a line, bridging of that line cannot
occur with a conference card.
#14 local test desk (LTD)
#3 local test cabinet (LTC)
Centralized Automatic Loop Reporting System (CALRS)