Features Description - Nortel Meridian 1 Manual

Features description

Battery supervision
Inverted dialling
Intelligent peripheral equipment circuit cards for New Zealand
Battery supervision, rather than Periodic Pulse Metering (PPM), is used on
the NT5K18BA trunk card to support Call Detail Recording (CDR). Polarity
detectors on the card monitor battery reversals at the start and end of calls.
Messages from the polarity detectors are used by software to start and end the
CDR timer.
Battery supervision is configured in overlay 14 by setting the class of service
prompt to BAT.
In New Zealand, digipulse signalling follows a "10-n" system, where n
represents the digit dialed. Inverted dialling is illustrated in Table 1-7.
Table 7
Inverted dialling
Digit dialed
0
1
2
3
4
5
6
7
8
9
Inverted dialling is configured in overlay 56 by setting the RVDL prompt
to 1.
NT5K93 Central office trunk circuit card
Digit sent to central office
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Option 11 - Description and Instal-