Hi,
On the FMB range of devices (eg FMB920) how does the Jamming Detection work (assuming in Features Settings - Jamming, it is not set to Disable)?
Does it actively detect the disruption of the GPS and\or GSM signal (most jammers just broadcast noise on the relevant frequencies)?
Or does it detect jamming when the GPS and\or GSM signals are zero? [This would not be jamming to me as there could be locations were there is no GSM\GPS signal.]
Thanks