Siemens 4110 On-hook dialling, Open listening, Outgoing MSN freely selectable, Parking calls

ISDN Glossary

N

O

P

Notebook function

During a call you can enter a call number in the telephone's memory so you can dial it later.

NT/NTBA

NT = Network Terminator, NTBA = Network Terminator Basic Access. The public T-ISDN ends at the NT. The NT provides the link to the existing telephone socket. Only the NT can and should be connected to the telephone socket. Analogue terminals must not be connected to the telephone socket. ISDN terminals and other ISDN sockets are connected to the NT.

On-hook dialling

Enhanced telephone function: The handset is not lifted until the called party answers.

Open listening

At the push of a button everyone in the room can listen to the telephone call via the built-in loudspeaker. See also Hands-free talking

Outgoing MSN freely selectable

This is a feature which enables you to determine which MSN is to be used for the subsequent call. This is important not only for call number display on the called party's phone but also for calculating call charges. Call costs, which can be coded by MSN free of charge on the provider's bill, are assigned to the MSN that was used to make the appropriate call.

Parking calls

You park a call when you unplug the telephone during a call or replace the handset so you can pick up the call on another handset connected to the same line. The call remains connected during this time.

Phonebook

Enhanced feature of a telephone; stores the names and call numbers of other subscribers. The numbers can be quickly found and dialled.

PIN

Abbreviation for Personal Identification Number. This is used to protect against unauthorised use, examples include the system-PIN, answering machine PIN and handset PIN.

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