Glossary – Sony Ericsson GC79 User Manual
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Glossary
Glossary
802.11
A standard developed by the IEEE. The 802 family of
standards relates to local and wide area networks. 802.11
refers to WLAN standards.
802.11b
The IEEE standard relating to WLAN operating at
2.4GHz and having a maximum speed of 11Mbps.
802.1X
802.1X is the security layer in the 802 standard.
802.3
The IEEE standard for Ethernet based wired networks.
AP
Access Point. A device which provides wireless 802.11
access to a wired network (typically 802.3 Ethernet).
The user can see available APs in the vicinity and
(depending on security/authentication requirements)
connect to the internet or intranet services they offer.
A group of APs can be networked to provide service in
a wider area, or to break down traffic into smaller hotspots.
APN
Access Point Name. Used in GPRS to define services
to which the terminal can connect. For example, Internet,
WAP, MyCompany.
Bearer
Path over which data flows. Specifically in CSD and
HSCSD, the type of telephony link from the GSM
network to the server - V PSTN or ISDN.
bps
Bits per second - rate of data flow.
COM Port
Defines a serial/RS-232 port within the Windows
®
environment. May be physical (COM1 port on the rear
of the PC) or virtual (COM5 port communicating with
a PC card modem)
CS
Circuit Switched. Connection from A to B which has a
fixed bandwidth and is maintained over a period of time,
for example a voice telephone call.
CS-1 to CS-4
Coding Scheme. Determines the data rate per timeslot
in GPRS.
CSD
Circuit Switched Data. CSD is a GSM service providing
a CS data connection at a rate of 9.6 or 14.4 kbps.
DUN
Dial-Up Networking.
e-GSM
Extended GSM. New frequencies specified by the
European Radio Communications Committee (ERC) for
GSM use when additional spectrum is needed (Network-
dependent). It allows operators to transmit and receive just
outside GSM’s core 900 frequency band. This extension
gives increased network capability.
ETSI
GGSN
Gateway GPRS Support Node
GPRS
General Packet Radio Services.
GSM
Global System for Mobile Communications. GSM is the
world’s most widely-used digital mobile phone system,
now operating in over 160 countries around the world.