NEC Electra Elite 192 Hardware Manual page 251

Electra Elite
System Hardware Manual
6.5.4 LED Indications
Live LED indications are listed below.
Blinking Red
¥
Steady Red
¥
Off
¥
BSY 1~4 indications are listed below.
Steady Red
¥
Off
¥
6.5.5 Connectors
The VRS(4)-U10 ETU has one connector:
CN1
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6.5.6 Pins
Two pins, SP1 and SP2, are located on the top right of
the VRS ETU. These short pins are for maintenance. Do
not change the factory default settings on these pins.
Pins 2 and 3 are short-circuited.
Normal Operation
Operation Stopped (power on)
No Power
Channels 1~4 are busy with replay/
record or detecting DTMF signals.
Channels 1~4 are idle.
Connects to the backboard
Issue 6
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