PSTN Central Unit
2.1
20
2.1 PSTN Central Unit
Description
Power supply
Green
OK (battery full)
Green flashing
Battery charging
Red
Battery failure
Off
Power failure, more than 1 hour of
operating time remains
Red flashing
Power failure, less than 1 hour of
operating time remains
Red flashing after
power up
Audio unit FW upgrade proceeding
Telephone line
Green
Line OK, ready (on-hook)
Green flashing
Line picked up (off=hook, call)
Red
Line failure (no dialtone)
Communication
No light
Relax (ALARM reset)
Yellow
ALARM activated (calling)
Green
Call confirmed (ALARM
announced) /
Fireman activated
Green flashing
Incoming call
Yellow flashing
Triphony
Fast green flashing Programming from dispatching office
Fast yellow flashing
Alternate
yellow/green
flashing
Programming from machine room
Bus busy
Old type
New type
Bus connector
(to audio units)
Telephone line
connector
Supply
connector
Battery
Switch
(ON/OFF)
USB connector
(for programming, upgrading etc.)
Warning
Do not open
the
CU
during the warranty period.
Later, open for battery replacement only.
Figure 2.2
Central Unit
Connectors
Figure 2.1
Central Unit
LED Indicators
Summary of Contents for LiftNet
Page 1: ...2N LiftNet Lift Communicator User Manual Version 1 9 3 Firmware version 1 9 1 www 2n cz ...
Page 3: ...2N LiftNet product is the holder of the Type certificate of the TÜV SÜD Czech company ...
Page 11: ...Product Description 1 1 11 Figure 1 3 Example of Fireman Connection in 2N LiftNet ...
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Page 86: ...Battery Maintenance 5 1 86 ...
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