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PBX installation
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Important! Do not connect the Nokia 22 to a digital (ISDN) interface of
a PBX.
Making Test Calls
Incoming call
Make a call to the Nokia 22 GSM number. For details, contact your service pro-
vider. The Nokia 22 answers the call and places the PBX extension line off-hook.
The PBX provides a dial tone and you can dial the desired extension or outgoing
number. The PBX connects the call.
Outgoing call
Make a call to the PBX extension number where the Nokia 22 is connected. The
Nokia 22 answers the call. You hear either a dial tone or silence depending on
the settings of the terminal. Dial the desired number. The terminal connects the
call.
The PBX can also be configured to route certain numbers automatically.
For terminal functionality in the extension connection, see “ Functionality in ex-
tension mode” on page 25.
Note:
Some PBXs are more sensitive to radio interference than others
and there may be some audible interference. If this problem occurs, in-
crease the distance between the Nokia 22 PBX connectivity terminal
and the PBX. If there are other problems with the product or with con-
necting the product to the PBX, please consult your local dealer, service
provider or Nokia Mobile Phones for further information.
Note: When the Nokia 22 is connected to an extension line of a PBX,
some precautions must be taken into account. If no calling restrictions
have been set up, any caller calling the Nokia 22 PBX connectivity
terminal’s GSM number gains access to the outgoing PBX trunk line and
can make phone calls that are charged to the PBX owner.
To prevent this situation, the PBX must be configured to deny any out-
going calls coming from the extension line the Nokia 22 is connected to.
If the PBX cannot be configured in such a way, it is possible to configure
the Nokia 22 to automatically call a predefined extension number when
it receives a GSM call. For further information, see “5. Configuration” on
page 30. For more information about PBX configuration, see your PBX
User’s Guide.