ECMA A European association for standardising information and communications systems.
EMC Electromagnetic Compatibility. Ameasure of a system’s ability to operate without its efficiency being impaired by interference from other systems, and without affecting the operation of other systems.
ETS European Telecommunications Standard. A standard published by ETSI. N.B. I-ETS is an Interim European Telecoms Standard.
ETSI European Telecommunications Standards Institute. The body responsible for the development of telecommunication standards that will be ratified by the EU for use within the European Community.
EuroISDN A name for ISDN as defined by the relevant European ETSI Standards.
EXCHANGE LINE GROUPING Allows you to group a number of exchange lines for exclusive use of say the service department so that customers can always get through while the other lines are shared by the rest of the company.
EXCHANGE LINES Exchange lines link the telephone system to the public telephone network.
EXCLUSIVE HOLD Exclusive hold allows you to exclusively put a call on hold exclusively and prevents other extensions from accidentally picking up your call.
EXTENSION GROUP HUNTING Extension group hunting lets you designate a number of extensions as one group so that incoming calls ‘hunt’ among them for a free extension. This can ensure that all calls to that group are answered by the service or admin department etc.
EXTENSION STATUS INDICATORS This is the same as Busy lamp field indicators. (BLFI)
EXTERNAL PAGING This enables you to make announcements over the tannoy system in your building.
EXTERNAL/INTERNAL LINE IDENTITY External/internal line identity distinguishes between internal and external calls. It is also referred to as distinctive ringing.
