Specifications

FRITZ!Box Fon WLAN 7270 190
Glossary
answering machines in networks. Added to this are global
accessibility under a single telephone number and new
VoIP features like the Buddy List known from chat rooms.
Internet telephony used to be possible only with a head-
set connected to the computers of the callers and their
conversation partners. Today voice connections via the In-
ternet, even to fixed-line and mobile networks, can be
conducted conveniently using VoIP telephone systems
that allow already existing analog telephones to be used
even when the computer is switched off. Various Internet
Service Providers and telephony carriers provide SIP-
fixed-line gateways for this purpose. Such a gateway is
used to produce voice connections between the Internet
and conventional telephone networks. In principle VoIP
conversations are possible via every DSL access point, but
for convenient use with existing terminal equipment, and
for conversations with the fixed-line and mobile networks,
it is important that the DSL provider supports what is
known as the SIP standard. SIP is the current standard de-
fined for VoIP by the IETF (Internet Engineering Task Force).
WLAN abbreviation for Wireless LAN, or Wireless Local Area Net-
work
The term WLAN designates the industry standard for wire-
less local networks passed by the Institute of Electrical
and Electronics Engineers (IEEE) in 1997 under the title
IEEE 802.11.
By means of WLAN technology, individual computers or
network devices like printers or DSL access points can be
linked wirelessly to an existing cable-connected local net-
work (LAN), or LANs can be converted completely to a
wireless structure. A further useful purpose for WLAN tech-
nology is to link segments of existing cable-connected
networks.
Although WLAN was actually developed only for short-
range connections, by cascading WLAN access points or
implementing transmission networks with high-power
point-to-point radio transmission, even network segments
F!BoxFonWLAN-7270-e.book Seite 190 Donnerstag, 7. April 2011 5:36 17