Nortel Networks Option 11C Mini manual Power switch, Power status indicator

Page 32 of 332 Chapter 2 — Identifying the Option 11C Mini equipment

Power switch

There is a power switch on the front of the NTDK91 Main Chassis and the NTDK92 Chassis Expander. Use this switch to turn the Option 11C Mini power on and off. See Figure 5 on page 34.

Power status indicator

There is a power status indicator (LED) on the front cover (top left-hand corner) of the Main Chassis and the Chassis Expander. When the LED is green, the power is in operation. When the LED is off, there is a power failure of one of the power outputs. See Figure 5 on page 34.

Power supply DIP switch settings

Use a DIP switch to set ringing voltages, ringing frequencies, and message waiting voltages. See Table 2 and Figure 5 on page 34 for all DIP switch setting options. Typical settings are shown for the following regions:

•“Asia Pacific/Cala power supply DIP switch settings” on page 33

•“Europe power supply DIP switch settings” on page 33

•“North American power supply DIP switch settings” on page 34

Table 1

Power supply DIP switch settings

Ringing Frequency (Hz)

Ringing Amplitude (Vrms)

Message Waiting Lamp (VDC)

Switch

20

25

50

Switch

70

75

80

86

Switch

-120

-150

Disable

Setting

Setting

Setting

1

ON

OFF

ON

3

OFF

ON

ON

ON

6

NOT USED

2

ON

ON

OFF

4

OFF

OFF

ON

ON

7

OFF

OFF

ON

5

OFF

OFF

OFF

ON

8

OFF

ON

X

553-3021-209 Standard 3.00 April 2000