2N VoiceBlue Lite - Manual v2.6 - Manual (Page 28)

Fig. 12 – Signalling LEDs
Basic diagnostic tests and gateway initialisation are performed
automatically whenever the gateway is connected to supply
voltage. Each test step is signalled by a specific colour
combination of the LEDs. If a test step fails, the indicator
combination related to the failed test remains lighted.
Power Indicator
The Power LED signals whether the VoiceBlue Lite gateway is
supplied or not.
Power indicator (blue)
Power LED colour/status
No light The system is not working. /
Blown fuse / Wrong power
supply
Continuous light The system is working.
Tab. 1 – Survey of Power Indicator Statuses
GSM Indicators
The GSM 1 to GSM 4 LEDs signal statuses of the respective GSM
modules. Whenever the 2N - VoiceBlue Lite is started, detection
of the GSM modules is carried out. This process is signalled by a
green LED. If all GSM modules are present and ok, the LED goes
out. After that the firmware and configuration uploading process is
initiated, which is signalled by various LED colour combinations.
The initialisation process is followed by a check of presence of
SIM cards in slots. Quick blinking of the green LED of the
respective GSM module indicates this procedure. If a GSM
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