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ISDN glossary
Gigaset CX100-150isdn / englisch / A31008-X150-G101-1-7619 / glossary.fm / 20.01.2004
ISDN glossary
A
Added-feature connection
ISDN connection that offers three more services than the standard connection: call
forwarding, identification of charges after a call, and a network mailbox.
Authorisation class
Defines which connections are permitted on a PABX terminal, e.g., internal only,
incoming only, or unlimited call authorisation.
Authorisation for direct outward dialling
Different users may be assigned different levels of authorisation on a base station.
For example, while User A may only take incoming calls, User B may make calls
without restriction.
Automatic callback
See "Callback when the number is busy"
B
Block dialling
Also pre-dialling. You may only dial or, if required, correct the phone number. Then
you should lift the receiver or press the loudspeaker key.
C
Call forwarding
CF, Call Forwarding. You want to forward calls to another number permanently. You
can forward calls externally via the exchange or internally in the device itself. Call
forwarding can be set up individually for each separate phone number (MSN) (to
your mobile phone when on holiday, to the office, to a neighbour etc.).
This is carried out at the network provider's local exchange. This means the call
never reaches the original destination.
There are three kinds of call forwarding: immediate (CFU, Call Forwarding
Unconditional), when the line is busy (CFB, Call Forwarding Busy), and when the call
is not answered (CFNR, Call Forwarding No Reply).
Call forwarding (via the second B channel)/internal call forwarding
Whereas external calls are forwarded through the network provider's local
exchange, internal calls are forwarded through your telephone. Your telephone
forwards the call via the second line of your ISDN connection. This means both
phone lines are engaged for the duration of the call. You pay the charges for the
connection to the forwarding number. However, you save yourself the network
provider's charges for this function.
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