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with better GSM coverage. Use the signal strength indicator on the up-
per right side of the display to find a better spot. If the delay indica-
tor turns and stays solid red, please hang up and set up the call again.
When no call is in progress, the delay indicator is shown grey.
Secure Calls while moving
When using the GSMK CryptoPhone while moving fast in a car or a train,
you may experience a degradation in call quality, periods of longer delay
(especially in Robust call mode) and short dropouts during a call. These
effects are the result of a so called “handover” that occurs when you
move from the coverage zone of one GSM tower (also called ‘GSM cell’)
to the next. During the handover the data connection is briefly inter-
rupted.
The GSMK CryptoPhone G10i has been successfully tested traveling at
speeds faster then 180km/h. The frequency and intensity of disturbanc-
es is primarily determined by the GSM network. In rural areas, the net-
work consists of fewer and bigger cells, resulting in less frequent han-
dovers and less disturbances. In urban areas the network has typically
a high density of small cells, resulting in many handovers when moving
and thereby causing more disturbances.
Note: In many countries the use of mobile phones while driv-
