Significance Of Led Indicators; Figure 3-8 Location Of The Led Status Indicators - Topex MobiLink ISDN2GSM User Manual

TOPEX MobiLink ISDN2GSM

3.10. Significance of LED indicators

The MobiLink ISDN 2 GSM equipment has
three LED as optical status indicators,
shown in the figure to the right.
Location of the LED status indicators: form
top downwards you have the GSM LED,
the ISND LED and the power supply LED.
The first two are bi-color (red / green) while
the Power led lights only green.

Figure 3-8 Location of the LED status indicators

Functions of LED`s status
Each LED may light green or red, continuously or blinking with
different frequencies, as shown in the table below:
LED Status
This dual color LED shows the status of GSM
modules. It lights green to indicate GSM 0 and red
to indicate GSM 1.
Blinking fast,
5 Hz
Blinking,
1 Hz
Topmost
Blinking
(GSM)
slow,
0.5 Hz
Off
On,
continuously
Information about synchronization of ISDN
Middle
interfaces. Here green color indicates the NT
(ISDN)
interface and red color refers to the TE interface of
MobiLink.
User`s Manual
Significance
The GSM module is initializing
Wrong PIN number (PIN error)
GSM module is searching for the
network (antenna not installed, or
MobiLink not in the coverage area
of the GSM network )
GSM module has registered to the
network and is in standby
GSM module is busy (in a call or
just allocated)
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