Siemens Gigaset SL75 WLAN Specifications download pdf (Page 128)

127

Glossary

Gigaset SL75 WLAN / en / A31008-M700-B112-1-7619 / glossary.fm / 24.4.06

Version05.08.2005

Glossary

802.11

Transfer mode for wireless network

communication (WLAN) published in

1997 by the IEEE (extensions e.g.

802.11b, 802.11g).

802.11b

Currently the most widely distributed

transfer mode (extension of 802.11).

Data transfer: 11 Mbit/s gross (approx.

50 % net), frequency band 2.400 to

2.485 GHz.

802.11g

Extension of 802.11. Less widely used

compared with 802.11b, but greatly on

the increase. Data transfer: 54 Mbit/s

gross. Frequency range: 2.400 to 2.485

GHz.

A

Access point

Centre of a wireless infrastructure

WLAN. All WLAN subscribers log into

the access point.

The access point regulates the data

traffic between the subscribers, and

forms the interface with other net-

works (e.g. to the Internet).

An access point can, for example, be a

WLAN router.

Ad-hoc network

WLAN without a central structure

(without an access point). WLAN sub-

scribers form a spontaneous network in

which all subscribers are equal.

Requirement: all devices have a wire-

less network adapter and can be oper-

ated in ad-hoc mode. You cannot oper-

ate the handset in an ad-hoc network.

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 SIP

connection pass and adds the public IP

address of the secure private network.

The router's ALG should be deactivated

if the SIP provider offers a STUN server

or an outbound proxy.

See also: Firewall, NAT, Outbound

Proxy, STUN.

ATM (Asynchronous Transfer Mode)

High-speed network technology for

transferring text, voice, audio and

video.

Authentication

Restriction of access to the WLAN by

use of a password to log in. The hand-

set supports authentication with secu-

rity standard 802.1x.

For further security settings, see

Encryption.

B

Block dialling

Enter the complete number, and cor-

rect it if necessary. Then pick up the

receiver or press the handsfree key to

dial the number.

Bridge

Connection between several network

segments at network level 2, e.g. a

wired and a wireless network.

See also: Gateway, Router).

Broadband Internet access

See DSL.

Broadcast

A data packet that is not directed to a

particular recipient but to all network

subscribers e.g. with UDP transport

protocol).

BSSID (Basic Service Set ID)

Clearly distinguishes one WLAN from

another. In an infrastructure WLAN

the BSSID is the MAC address of the

access point.

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