Sony Ericsson P910i User Guide - Page 190

This is the Internet version of the user's guide. © Print only for private use. CSS Cascading Style Sheet. A feature of browsers. DTMF Dual Tone Multi Frequency. A method of coding digits as a combination of two audible tones. GIF Graphics Interchange Format. Format for storing images which also supports animated images. Highly compressed by limiting the colour palette to 16 or 256 colours. It is one of the two most common file formats for graphic images on the World Wide Web. The other is JPEG. DUN Dial-Up Networking. The dial-up networking capability in Windows. 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 900MHz frequency band. This extension gives increased network capability. EMS Enhanced Messaging Service. An extension of SMS enabling pictures, animations, sound and text formatting to be added to text messages. FCC Federal Communications Commission. US government agency which regulates radio communications. GPRS General Packet Radio Services. A radio technology for GSM networks that adds packet-switching protocols, shorter setup time for ISP connections, and offers the possibility of charging by the amount of data sent rather than by connection time. GPRS promises to support flexible data transmission rates typically up to 20 or 30 kbps (with a theoretical maximum of 171.2 kbps), as well as continuous connection to the network. 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. GSM 900 The GSM system family includes GSM 900, GSM 1800 and GSM 1900. GSM 900 refers to GSM working on a frequency of 900 MHz. 190 Terms and definitions