Electrical Specifications - Avaya Nortel Communication Server 1000 Reference

The system sends digits in the form of Dual Tone Multifrequency (DTMF) tones or pulse digits.
When the far-end answers, the Central Office reverses polarity. If the trunk is configured for
battery supervision, it sends a polarity reversal message to software.
Central Office disconnect
There are two ways the Central Office can disconnect the call:
• by applying busy tone toward the CS 1000E, CS 1000M, and Meridian 1. If the trunk card
is configured to detect busy tone, it sends a disconnect message to software.
• by reversing battery. If the trunk card is configured to detect battery reversal, it sends a
disconnect message to software. When the unit on the trunk card is idled, the trunk card
sends a release confirm message to software.
CS 1000E, CS 1000M, and Meridian 1disconnect
The CS 1000E, CS 1000M, and Meridian 1disconnects the call by removing the loop between
the tip and ring leads and replacing the ringing detector. Trunks configured for battery
supervision send a release confirm message to software.

Electrical specifications

Power requirements
Table 243: NTCK16 circuit card power requirements
requirements for the NTCK16AX and NTCK16BX generic Central Office trunk cards.
Table 243: NTCK16 circuit card power requirements
Voltage
+15.0 V
-15.0 V
+8.5 V dc
+5.0 V dc
1
Analog circuitry is powered with +/-12 V generated from +/-15 V. The maximum current imbalance between the +/-15 V
rails is 100 ma per circuit pack.
2
8.5 V is regulated to give 5 V.
Circuit Card Reference
dcFootnote.
1
dcFootnote.
2
on page 571 shows the power
Idle Current
170 ma
170 ma
101 ma
160 ma
Electrical specifications
Active current
330 ma
249 ma
100 ma
322 ma
July 2011 571