al calls.
Internal calls
Free-of-charge connection between terminals in a PBX.
Internal telephone
numbers
Your PBX has a fixed internal telephone number plan.
Internet
The Internet consists of a number of regional, local and university
networks. The IP protocol is used for data transmission on the Inter-
net.
Internet time sharing
Allows several users to surf the Internet simultaneously over an
ISDN connection. The information is requested by the individual
computers with a time delay.
Intranet
Local computer network within a company based on Internet techno-
logy providing the same Internet services, e.g. homepages and
sending email.
IP
Internet Protocol
IP Address
The first part of the address by which a device is identified in an IP
network, e.g. 192.168.1.254. See also netmask.
IPComP
IP payload compression
IPCONFIG
A tool used on Windows computers to check or change its own IP
settings.
IPoA
IP over ATM
ISDN
Integrated Services Digital Network
ISDN address
The address of an ISDN device that consists of an ISDN number fol-
lowed by further numbers that relate to a specific terminal, e.g.
47117.
ISDN Basic Rate In-
terface
ISDN subscriber connection. The Basic Rate Interface consists of
two B channels and one D channel. In addition to the Basic Rate In-
terface, there is the Primary Rate Interface. The interface to the sub-
scriber is provided by an So bus.
ISDN card
Adapter for connecting a PC to the ISDN Basic Rate Interface. From
a technical perspective, we differentiate between active and passive
cards. Active ISDN cards have their own processor, which handles
communication operations independently of the PC processor and
therefore does not require any resources. A passive ISDN card, on
Teldat GmbH
Glossary
bintec Rxxx2/RTxxx2
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