Glossary

2.5GTechnological upgrades to standard GSM mobile networks which increase data transmission speeds and efficiency. The term encompasses HSCSD, GPRS and EDGE. Seen as an intermediate technology between 2G and 3G.
2GSecond generation technology. A term used to describe the digital cellular networks such as GSM which were introduced as a replacement for analogue cellular networks.
3GThird generation (UMTS) technology using new data transmission standards and operating at a different part of the spectrum range to second generation networks.
802.11 or IEEE 802.11

802.11 or IEEE 802.11 is a general standard created by the IEEE (Institute of Electrical and Electronics Engineers), which describes the development and mechanisms of wireless local networks (WLAN). 802.11a, 802.11b and 802.11g are enhancements of this standard, which are differentiated by data rate and frequency band.

Access pointA transceiver or radio component in a wireless LAN that acts as the transfer point between wired and wireless signal, and vice versa. The AP is connected to antennas as well as to the wired LAN system.
ADSL ADSL (Asymmetric Digital Subscriber Line) is a digital transmission process that enables data transmission rates of up to 8 Mbit/s to customers and up to 700 Kbit/s from customers via normal telephone lines. This involves digitally separating the telephone line into three channels, two for data transport and one for telephony. The system is referred to as "Asymmetric" because the upstream and downstream channels transport different amounts of data.
Analog

Signals that can be interpreted by humans, such as speech and music, are analog. These signals are constantly changing, for example in their pitch and acoustic pressure. In more technical terms, an analog signal is a physical factor that can adopt any value - that is, continuous interim values - within certain defined limits. Information is transmitted through the analogous (analogous = analog) pitch or frequency of the signal. The transmission is comparatively susceptible to interference. The opposite of "analog" is "digital".

Analog TransmissionThe traditional telephone technology (for voice transmission) in which sound waves (or other data) are converted into electrical impulses of varying strength or amplitude.
BluetoothBluetooth wireless technology is a short-range radio technology. Bluetooth wireless technology makes it possible to transmit signals over short distances between telephones, computers and other devices and thereby simplify communication and synchronization between devices.
Broadband A data-transmission scheme in which multiple signals share the bandwidth of a medium such as fiber-optic cable. This allows the transmission of voice, data and video signals over a single medium.

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