Nokia 32 User Manual page 18

Note: When the Nokia 32 terminal is connected to an extension line of a
PBX, some precautions must be taken. If no calling restrictions have been
set up, any caller calling the GSM number of the Nokia 32 terminal gains
access to the outgoing PBX trunk line and can make phone calls that are
charged to the PBX owner.
To prevent this situation, configure the PBX to deny any outgoing calls
coming from the extension line to which the Nokia 32 terminal is
connected. If the PBX cannot be configured in such a way, it is possible to
configure the Nokia 32 terminal automatically to call a predefined
extension number when it receives a GSM call.
Note: When calls are restricted or barred, calls may be possible to the
emergency number programmed into your phone (e.g. 112 or other
official emergency number).
For further information about PBX configuration, see your PBX user's guide.
Call monitoring
The PBX notifies the Nokia 32 terminal that the call is disconnected by providing
either a busy tone or a silence to the Nokia 32 terminal. To clear the call to the
GSM network, the Nokia 32 terminal must be set to monitor either one of those.
The default setting is monitoring the busy tone.
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Copyright 2003 Nokia. All rights reserved.
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