User's Manual

GL865-DUAL/QUAD V3 Hardware User Guide
1vv0301018 Rev.7 – 2013-10-30
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Reserved. Page 55 of 78
Mod. 0805 2011-07 Rev.2
11.9. STAT LED Indication of network service availability
The STAT_LED pin status shows information on the network service availability and Call
status.
In the GL865-DUAL/QUAD V3 modules, the STAT_LED usually needs an external
transistor to drive an external LED.
Therefore, the status indicated in the following table is reversed with respect to the pin status.
LED status Device Status
Permanently off Device off
Fast blinking
(Period 1s, Ton 0,5s)
Net search / Not registered /
turning off
Slow blinking
(Period 3s, Ton 0,3s)
Registered full service
Permanently on a call is active
A schematic example could be: