2N ISDN BRI GSM, User Manual

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2N - ISDN BRI GSM Enterprise Gateway
GSM Indicators
The GSM 1 and GSM 2 indicators signal statuses of the respective
GSM modules. Whenever the 2N - ISDN BRI GSM Enterprise
gateway is started, detection of the GSM modules and SIM cards
is carried out. This process is signalled by a red LED, which goes
on a few seconds after voltage is supplied. The GSM module
detection takes a few seconds. In case a GSM module or SIM card
is absent, the red LED keeps shining. If a GSM module is not
supplied, the respective GSM LED is blinking red. After a correct
GSM module initialisation, the SIM card starts logging
into the provider's network, which is indicated by a quickly
blinking green colour. If the log-in has been successful, the LED
goes out. If not, it shines red.
In normal operation, a slowly blinking green LED indicates
establishing of an incoming or outgoing call and a permanently
green LED means a successfully established connection within
the respective GSM module.
A survey of GSM module status signalling is included in Tab. 3
GSM indicators
GSM 1 or GSM 2 LED colour / status
The module is ready and logged-in No light
Call establishing Green / blinking slowly 1:1
Currently made call Green / shining
SIM card initialisation Green / blinking quickly 1:1
Shining red SIM card initialisation in progress
GSM module / SIM card absent Red / shining
GSM module not supplied Red / blinking quickly
Tab. 3 - Survey of GSM Module Status Signalling
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