Siemens 11 User Manual

Page 46

Appendix

Gigaset USB Adapter 11 / en / A31008-E105-B102-1-7619 / appendix.fm / 06.12.2002

IP
Internet Protocol. The standard protocol within TCP/IP that defines the basic unit of

information passed across an Internet connection by breaking down data messages into

packets, routing and transporting the packets over network connections, then reassem-

bling the packets at their destination. IP corresponds to the network layer in the ISO/OSI

model.
IP Address
An IP address is a 32-bit number that identifies each sender or receiver of information

sent across the Internet. An IP address has two parts: the identifier of a particular net-

work on the Internet and an identifier of the particular device (which can be a server or

a workstation) within that network, i. e. 193.12.7.137.
ISP
Internet Service Provider. An organization that provides access to the Internet. Small

ISPs provide service via modem and ISDN while the larger ones also offer private line

hookups.
LAN
Local Area Network. A communications network that serves users within a defined geo-

graphical area. The benefits include the sharing of Internet access, files, and equipment,

such as printers and storage devices. Special network cabling (10BaseT) is often used to

connect the PCs together.
NAT
Network Address Translation. The translation of an Internet Protocol address (IP address)

used within one network to a different IP address known within another network. One

network is designated the internal network and the other is the external. The internal

network then appears as one entity to the outside world.
Radio Frequency
RF, Terms: GHz, MHz, Hz – The international unit for measuring frequency is Hertz (Hz),

equivalent to the older unit of cycles per second. One megahertz (MHz) is one Million-

Hertz. One giga hertz (GHz) is one Billion-Hertz. The standard U.S. electrical power fre-

quency is 60 Hz, the AM broadcast radio frequency band is 0.55-1.6 MHz, the FM broad-

cast radio frequency band is 88-108 MHz, and wireless IEEE 802.11 LANs operate at

2.4GHz.
SSID
Service Set ID. A group name shared by every member of a wireless network. Only net-

work adapters with the same SSID are allowed to establish a connection.
Subnet Mask
A value that defines whether your computer communicates only within your LAN or

communicates outside of your LAN, where it is routed out to the rest of the Internet. A

Subnet Mask that has the same first three components (for example, 255.255.255.0) is

the routing pattern for a Class C address.