Profoon PAK-50 Installation And Setup page 84

If you choose a pre-paid payment method
for the alarm button, please choose one
with which you can upgrade your calling
credit via the internet of in the store.
Because this alarm button cannot be used
to navigate option menus, it's not possible
to update your credit via a dial-up number.
GPS:
This function allows you to determine the
location of the telephone. By contacting
dedicated satellites, the position of the
phone can be determined very exact. This
can be useful for e.g. navigation.
Communication with the satellites can
be affected within buildings or on small
streets, making this function work slower.
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