
TWG 01 01/2011
page 15/39
5.5
Keyboard
Figure 9: Keyboard of TWG 01
5.5.1 Function of LED symbols
LED Off
Lit
Flashing
green
No connection to the
phone line, or
connection to phone
line exists, but is
inactive (no local loop,
this may be introduced
only when dialing) *
Connection to the phone line
OK
TWG 01 dialing (alarm)
yellow
State of alert
(standby)
Message recording or
playback
Flashing once or twice during
programming, or lit during 1,5 sec:
confirmation of entry
Flashing 3 or 4 times during
programming:
entry mistake
Flashing continuously: uncompleted
programming of the message and/or
phone number
red
No connection to power
supply
Connection to power supply
OK
Alarm
Flashing continuously even after
pressing button
: see chap. 9
* This depends on the type of telephone connection and on the local and national configuration of the
telephone network.