Connection To Metallic Test Access - Nortel DMS-100 Series Maintenance Manual

7-24 Star Remote System manual maintenance
The NTTR73AA UMP performs line testing on Star Hub lines. The UMP has
four metallic connections to Star Hub lines. Each line is connected to only one
of four group of lines and can be used only for that group. The metallic
connections are used for measurements of the lines and for monitoring the
lines. Lines connected to the Star Module are tested through the LMU.
There are three groups of line tests
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The MAP level maintenance commands used to activate the test capabilities of
the UMP card are discussed in the "Star Remote System user interface"
chapter in this manual.

Connection to metallic test access

There are four metallic bus accesses in the Star Hub. A metallic matrix in the
UMP card controls access to the metallic bus. Since two UMPs are
provisioned in the Star Hub, two metallic bus tests can be performed
simultaneously on lines that are on two separate metallic buses. Each UMP
card performs one test at a time. That is, a single UMP card does not support
simultaneous requests for metallic test access, test trunk access, and
MONTALK access. The same metallic bus cannot be used by both UMP cards
simultaneously.
297-8353-550 Standard 05.01 March 2001
LTP level tests - includes line tests and diagnostics
— measurement tests, including VDC, VAC, resistance (RES),
capacitance (CAP) that are performed by the test head in the UMP in
the Star Hub
— monitor/talk (MON/TALK) tests including RING, ORIG, DGTTST,
TSTRING, and metallic TONEGEN (only applies to Star Hub)
ALT level tests - includes line test conducted on a scheduled basis, such as
DIAG, SDIAG, LIT, BAL, and CKTTST
station ringer and VER90 tests (only applies to Star Hub)
— station ringer test, executed from the subscriber premises by dialing an
access code and the last four digits of the subscriber number
— VER90 test, initiated from the operator telephone set by dialing an
access code and the last four digits of the subscriber number