each other via access points only. There is no direct communication
between the individual clients. A network of this kind is also known
as a BSS (basic service set), and a network that consists of several
BSS is known as an ESS (extended service set). Most wireless net-
works operate in infrastructure mode to establish a connection with
the wired network.
Inquiry
Makes it possible to put the first call on hold in the event of a call
waiting and take a new call.
Internal call tone
Special signal on a PBX to differentiate between internal and extern-
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.
Glossary
Funkwerk Enterprise Communications GmbH
460
R1xxx/R3xxx/R4xxx
