e Seconds. (In transmitted data it deter- Equipment Radiated Power. (Also referred to as mines the proportion of one second intervals, over a Effective Radiated Power of an antenna.) given period, when the data is error free.) European Space Agency. Electronic Funds Transfer. Emergency Service Bureau. (A centralised location European Free Trade Association. to which all emergency calls (e.g. police, ambul- EFTPOS Electronic Funds Transfer at the Point Of Sale. ance, fire brigade) are routed. Extremely High Frequency. (Usually used to de- Extended Superframe. (North American 24 frame scribe the portion of the electromagnetic spectrum in digital transmission format.) the range 30GHz to 300GHz.) Electronic Serial Number. (Usually refers to the Electronic Industries Association. (Trade associ- personal identity number coded into mobile radio ation in USA) handsets.) Equivalent Isotropically Radiated Power. (Or Effec- European Standardisation Organisation. tive Isotropically Radiated Power. Of an antenna.) European Selective Paging Association. European ISDN Users Forum. ESPRIT European Strategic Programme for Research and Emergency Locator Transmitter. Development in Information Technologies. Element Manager. (First level network manager Embedded Structured Query Language. controlling elements.) Electronic Switching System. (A generic term used Electronic Mail Association. to describe stored programme control exchange E-MAIL Electronic Mail. switching systems.) Electromagnetic Compatibility. ETACS Extended Total Access Communications System. Electromagnetic Interference. (Extension of TACS with additional channel alloca- ElectroMagnetic Pulse. (Released by a nuclear ex- tion below the existing TACS channels.) plosion.) End of Transmission Block. (A control character European Monetary System. which denotes the end of a block of Bisync trans- European MAP Users' Group. mitted data.) Equipment Number. (Code given to a line circuit, European Telecommunications Consultancy Or- primarily in switches, to indicate its locati