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Terms and definitions 181
This is the Internet version of the user’s guide. © Print only for private use.
GSM 1800
Also known as DCS 1800 or PCN, this is a GSM digital network
working on a frequency of 1800 MHz. It is used in Europe and
Asia-Pacific.
GSM 1900
Also known as PCS. Refers to a GSM system running in the
1900 MHz band. Used in the USA and Canada, for instance.
HSCSD
High-Speed Circuit-Switched Data (HSCSD) is circuit-switched
wireless data transmission for mobile users at data rates of up to
64 kbps.
HTML
Hypertext Markup Language is the set of markup symbols or
codes inserted in a file intended for display on a World Wide
Web browser page. The markup tells the Web browser how to
display a Web page's words and images.
HTTP
HyperText Transfer Protocol. The communications protocol
used to connect to servers on the World Wide Web. Its primary
function is to establish a connection with a Web server and
transmit HTML pages to the client browser.
IMAP4
Internet Message Access Protocol (the latest version is IMAP4)
is a standard client/server protocol for accessing e-mail from
your local server. The e-mail is received and held for you by
your IMAP server. You (or your client e-mail receiver) can view
just the heading and the sender of the letter and then decide
whether to download the mail.
IrDA
The Infrared Data Association is dedicated to developing
standards for wireless, infrared transmission systems between
devices. With IrDA ports, a device such as your P900 can
exchange data with other devices without a cable connection.
IrDA requires line-of-sight transmission.
ISDN
Integrated Services Digital Network. Communication protocol
offered by phone companies that permits phone networks to
carry data, voice, and other source traffic. Selecting ISDN for
CSD/HSCSD connections provides quicker call setup.
ISP
Internet Service Provider. An organisation that provides access
to the Internet.
JFIF
JPEG File Interchange Format.