Appendix: Supplementary Services; How The Supplementary Services Work; Number Identification - Nokia 22 Operator's Manual
Pbx connectivity terminal, gsm terminal
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Appendix: Supplementary
Supplementary services are network services. They are cellular services provided
by network operators and therefore differ from one network to another.
Supplementary services provide the subscriber with an opportunity to control
incoming and outgoing phone calls. The Nokia 22 PBX connectivity terminal
supports the following GSM Phase 2 + supplementary services.
• Number identification
• Call offering
• Call completion
• In-call handling
• Call restriction
• Security options
• Call transfer
Note: The call offering supplementary service and the call restriction
supplementary service cannot be deactivate at the same time.
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 serv-
ice sequence will be executed after 4 second's dial time-out. The Nokia 22 re-
sponds to a supplementary service activation, deactivation, request and
registration by sending OK or error tones from the telephone set's receiver.
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 22 and the DTMF telephone. In order to connect
the CLI, signalling mode must be activated.
©2001 Nokia Mobile Phones. All rights reserved.
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