Chapter 5: Verification Procedures; Verification Test Routines; Maintenance; Loop Check - Nortel M5208 Manual

Chapter 5
Verification procedures

Verification test routines

This chapter describes M5208 maintenance and the following acceptance
tests:
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If the criteria outlined in the Line Engineering Rules, 297–2011–180, are
observed, impulse or background noise and crosstalk compatibility problems
are unlikely to occur.
Before attempting to establish a communication path to another telephone
and to verify the enabled features, perform the loop check and check the
Tip/Ring polarity.

Maintenance

Maintenance of the Meridian Business Set is limited to replacement of the set
and/or other field replaceable items as itemized in Chapter 6 "Replacement
Parts".

Loop check

Loop and linecard tests must be performed at the switching equipment (refer
to Line Engineering Rules, 297–2011–180). It is assumed that loops and
linecards have been checked prior to the installation of any business sets.
Verify that the loop resistance is ≤ 1230 Ohm and that the loop loss is ≤ 24
dB at 8 kHz.
Loop check
Polarity check
Station Ringer test
297–2011–213 02.01 Standard February 1999
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