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Glossary
en / en / A31008-M2218-L101-3-7619 / glossary.fm / 20.03.2012
V
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rsion 2, 27.0
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.2010
Glossary
A
ADSL
Asymmetric Digital Subscriber Line
Special form of
DSL
.
ALG
Application Layer Gateway
NAT control mechanism of a router.
Many routers with integrated NAT use ALG. ALG lets the data packets in a VoIP connec-
tion pass and adds the public IP address of the secure private network.
The router's ALG should be deactivated if the VoIP provider offers a STUN server or an
outbound proxy.
See also:
Firewall
,
NAT
,
Outbound proxy
,
STUN
.
Authentication
Restriction of access to a network/service by using an ID and password to log in.
Automatic redial
Several attempts to call are made automatically when the line is busy. The number is
adjustable.
B
Block dialling
Enter the complete phone number, and correct it if necessary. Then pick up the
receiver or press the speaker key to dial the phone number.
Broadband Internet access
See
DSL
.
Buddy
Subscriber with whom you exchange brief messages on the Internet in real time (chat-
ting).
See also:
Instant messaging
.
C
Call divert
CD
Automatic diversion (CD) of a call to a different telephone number. There are three
kinds of call divert:
– CDU, Call Divert Unconditional
– CDB, Call Divert Busy
– CDNR, Call Divert No Reply
Call swap
Call swap allows you to switch between two callers or between a conference and an
individual caller without allowing the waiting caller to listen to the call.
