How The Supplementary Services Work; Number Identification; Call Forwarding (Call Offering) - Nokia 32 Features Manual

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High Speed Circuit Switched Data (HSCSD) (See chapter 2.4)
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General Packet Radio Service (GPRS) (See chapter 2.5)
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Security Options

2.1.1 How the supplementary services work

The activation, deactivation, request and registration of a supplementary service function in
the same way as in a mobile phone. The dialled supplementary service sequence will be
executed after 4 second's dial time-out. The Nokia 32 terminal responds to supplementary
service activation, deactivation, request and registration by sending OK or error tones from
the telephone set's receiver.
Table 1: OK and error tones
Tone Indication
______
OK
_ _ _ _
Error
2.1.1.1

Number identification

Calling Line Identification Presentation (CLIP)
The CLIP (Calling Line Identification Presentation) feature displays the caller's number on an
external CLI (Calling Line Identity) device. The CLI device must be connected between the
Nokia 32 terminal and the DTMF telephone. In order to connect the CLI, signalling mode
must be activated.
Note that the CLIP function usually has to be activated by the network operator.
To request this function, key in *#30#.
Calling Line Identification Restriction (CLIR)
The CLIR (Calling Line Identification Restriction) feature offers the user an opportunity to
prevent his/her number from being shown to the recipient of the call. The network operator
sets the CLIR either to ON or OFF state for the subscriber. It is also possible to revert to the
CLIR status for one call at a time.
If, for example the CLIR is disabled (the phone number will be shown to the recipient of the
call), invoke the CLIR by keying in #31#PhoneNumber. The phone makes a normal call to
the PhoneNumber but the recipient of the call will not be able to see the Nokia 32 terminal's
phone number.
If the CLIR has been set permanently to ON (the phone number is not shown to the recipient
of the call), key in *#31# to show the number.
2.1.1.2

Call forwarding (Call offering)

These functions allow the user to forward incoming calls.