Figure 19 front of chassis – Nortel Networks 1000M User Manual
Page 45
Main components of the Chassis system
45
Table 9
North American power supply DIP switch settings
Ringing Frequency (Hz)
Ringing Amplitude (Vrms)
Message Waiting Lamp
(VDC)
Swit
ch
Setti
ng
20
25
50
Swit
ch
Setti
ng
70
75
80
86
Swit
ch
Setti
ng
-120
-150
Disa
ble
1
ON
3
ON
6
NOT USED
2
ON
4
ON
7
ON
5
ON
8
ON
Note: Set the DIP switches before the system powers up.
Figure 19 "Front of chassis" (page 45)
shows the power switch, power status
indicator, and DIP switch settings.
Figure 19
Front of chassis
Reserve power supply
You can use an Uninterruptible Power Supply (UPS) to provide a backup
power supply for the NTDK91 and the NTDK92 chassis. A UPS provides
a continuous AC power supply. Install the UPS unit according to the
manufacturer’s instructions. Refer to the power consumption information
in the chapters on system and site requirements in Communication
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Installation and Commissioning
NN43011-310
01.04
Standard
Release 5.0
13 May 2008
Copyright © 2008, Nortel Networks
.