220 Series 9
Description of indicator lights
The communicator is equipped with indicator lights (LED) which report the following information.
During initialisation, all LEDs light up for less than 1 second. During factory settings restore, LEDs and are off while
LEDs and are on.
LED Colour Name Description
Green/yellow GSM signal strength Type of network for packet service (see table 6).
GSM signal strength (see table 7).
Type of communication (see table 8).
Red Fault See table 9.
Yellow Line status On: the communicator has switched to the simulated PSTN.
Slow flashing: line occupied, voice message transmission.
G Green GSM network status Technical assistance LED.
ACT Green USB On: Host.
Off: Device.
Slow flashing: error.
Fast flashing: activity.
Table 5 – Indicator LED.
LED Colour Type of network for packet service
Green GPRS or EGPRS
Yellow WCDMA, HSDPA or unknown (3G version only).
Table 6 – Type of network for packet service.
GSM signal strength
Off Off No GSM signal.
Off On Low GSM signal strength.
On On High GSM signal strength.
Table 7 – GSM signal strength.
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