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Page 32 of 332
Chapter 2 — Identifying the Option 11C Mini equipment
Table 1
Power supply DIP switch settings
Ringing Frequency (Hz)
20
25
Switch
Setting
1
ON
OFF
2
ON
ON
553-3021-209
Standard 3.00
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
Ringing Amplitude (Vrms)
50
Switch
Setting
ON
3
OFF
4
5
April 2000
70
75
80
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
Message Waiting Lamp (VDC)
86
-120
Switch
Setting
ON
6
ON
7
OFF
ON
8
OFF
-150
Disable
NOT USED
OFF
ON
ON
X
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