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Jargon Buster
The du Pré Jargon Buster found the following for - ENos A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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Term
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Explanation
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| E | The E series Recommendations from the ITU-T regarding operations, numbering and routing. | |
| E & M | The old fashioned term for DC5. Stands for Ear and Mouth. Uses Dial Pulse signalling | |
| E1 | A European standard term for an ISDN PRA circuit with 32 x 64Kbit/s channels, giving a total of 2.048Mbit/s bandwidth. Uses the agreed Q.931 Euro signalling and PCM. In the USA, the circuit is a T1. | |
| E1 service | The common name for the (almost) worldwide digital 2.048Mbit/s E1 circuit service. Note that the USA uses T1, not E1 | |
| E164 | A ITU-T and BT SMDS term. An addressing type used with address screening to create closed user groups on BT’s SMDS network | |
| E2 circuit | A BT term for a circuit offering 8.192Mbit/s bandwidth | |
| E3 circuit | A BT term for a circuit offering 34Mbit/s bandwidth | |
| Earth Recall | An old method of signalling from an analogue telephone (POT) to instruct the telephone system to place the call on hold. Shorts one of the two signalling wires to earth. Replaced by Timed Break Recall | |
| EBCDIC | Extended Binary Code Decimal Interchange Code. An IBM 8-bit character code set | |
| e-business | e-business ("electronic business" derived from such terms as "e-mail" and "e-commerce") is the conduct of business on the Internet, not only buying and selling but also servicing customers and collaborating with business partners. | |
| ECC | Error Checking and Correcting | |
| ECMA | The European Computer Manufacturers Association which writes the standards for the signalling protocol for the interconnection of PBXs known as Q.sig. One of its objectives is to ensure standards are the same for both public and private ISDNs | |
| e-commerce | e-commerce (electronic commerce) is the buying and selling of goods and services on the Internet, especially the World Wide Web. In practice, this term and e-business are often used interchangeably. For online retail selling, the term e-tailing is sometimes used. | |
| EDGE | A cellular radio term. Enhanced Data GSM Environment. EDGE is a technology promoted by Ericsson for high speed data transfer over existing GSM networks, without the need to install new equipment -- a software upgrade is sufficient. A network converted to EDGE will allow speeds of up to 384Kbps or higher, which is 6 times more than what can be reached with an ordinary land line modem | |
| EDO RAM | Extended Data Out. This form of RAM is faster than DRAM by 10% | |
| EEC | European Economic Community | |
| EEPROM | A micro-chip. Electronically Erasable Programmable Read Only Memory. | |
| Egress | i) Exit point ii) A BT term. The exit point of a particular platform |
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| EIA | Electrical Industries Association | |
| EIDE | An enhanced form of IDE | |
| EIP | Encryption-In-Place. A security mode in which a Ravlin unit encrypts the IP packet's payload only (without encrypting the packet header). Because EIP does not require encryption of the IP header or encapsulation of the IP packet, overhead is lower and performance enhanced. | |
| EISA | Extended Industry Standard Architecture. Using a 32 bit bus | |
| Electronic mail, sent via the Internet. In contrast, traditional post is sometimes referred to as ‘snail mail’ | ||
| e-mail client | An application from which users can create, send and read e-mail messages. | |
| e-mail server | An application that controls the distribution and storage of e-mail messages. | |
| Embark | see FeatureNet Embark | |
| EMC | Electro-Magnetic Compatibility - see CE | |
| Emergency Calls | 999, and the European 112, can both be dialled to reach the Emergency Services for Police, Ambulance, Fire Brigade and Coastguard. The law states that a telephone system must allow access to both these numbers from any extension that has a telephone connected. Sufficient exchange lines or channels must be available for telephones to access these numbers in case of emergency. There are no plans to cease 999 in favour of 112 | |
| Emulation | Hardware or software, or a combination of the two, that behaves like another device or program. Examples of this include PCs emulating dumb terminals | |
| Encryption | A means of changing information so that only the intended recipient can read it | |
| End-to-end | The description of a circuit which is complete from its beginning to its end | |
| Engaged Tone | There are two types of engaged tone, i) Subscriber Engaged - the same one tone repeated exactly evenly ii) Network Engaged - Two tones, repeated, the first tone being slightly longer than the second. Indicates the network carrying your call is jammed and hence cannot route you call you have dialled |
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| Enhanced AreaLink | A BT term. Associted with BT's Advanced Features. Calls routed according to a finer definable granularity than AreaLink. callers from within a defined locality can be dealt with according to local requirements PSTN calls routed according to geographic origination mobile calls can be bulk routed or based on the nearest BT interconnect point mapping. national entities appear 'local' enables a company's resources to be varied to meet changing calling patterns. | |
| EOM | A BT SMDS term. End of Message of a SMDS sequencing header | |
| e-Process | A set of software that facilitates the electronic processing of business transactions using e-mail as an enabling technology. | |
| EPS | A BT term. Engineering Performance Specification | |
| ER | Earth Recall. A PABX telephony term whereby a POT requests the CCU to place the current call on hold and provide internal dial tone. Depressing the recall button shorts one of the two wires to earth. An ugly and old fashioned method or recalling the CCU. Superceded by TBR | |
| Error Correction | A technique that restores received data integrity, either by changing the received data, or by requesting retransmission from the source | |
| ESMPT | Extended SMTP command set. Initially defined in RFC 1869 and extended thereafter | |
| ESP | Encapsulated Security Payload. The Encapsulating Security Payload provides confidentiality for IP datagrams or packets, which are the message units that the Internet Protocol deals with and that the Internet transports, by encrypting the payload data to be protected. | |
| Ethernet | A popular local area network design. The trademark product of the Xerox corporation. Characterised by 10Mbit/s base-band transmission over a shielded co-axial or unshielded twisted pair (UTP) cable, based on CSMA/CD technology | |
| ETRN | Extended TURN. An ESMTP command, first defined in RFC 1985, with which a client mail server asks another server to deliver queued mail to the client via a new ESMTP connection | |
| ETS | European Telecommunication Standards, produced by ETSI | |
| ETSI | European Telecommunications Standards Institute. Based at Nice. Set up by the Commission of the European Communities or CEC to create European Telecommunication Standards or ETS, some of which have been designated as NETs | |
| Euro-ISDN | European Standardised ISDN. ISDN which conforms to ETSI’s NETs. Currently replacing proprietary forms of ISDN found within Europe, to facilitate greater interoperability between ISDN in different countries. Conforms to the ITU-T’s Recommendation Q.931 | |
| Exchange Line | The term for a single PSTN connection between a PTO and a subscriber, consisting of one pair of twisted copper wires. One exchange line offers one communication, whether voice or data, at a time. Maximum data speeds are less than 64k, and may even be as low as 9.6Kbit/s | |
| Executable | An executable is a file that contains a program - that is, a particular kind of file that is capable of being executed or run as a program in the computer. | |
| Exepos | The name of a Company which specialises in CTI software | |
| Ext | A BT term. External | |
| Extended Graphics Array | see eXtended Graphics Array | |
| Extended MAPI | Extended Messaging Application Programming Interface. An interface developed by Microsoft that provides messaging functions including addressing, sending, receiving and storing messages. | |
| Extension Socket | Sometimes referred to as a Secondary socket i) For use in providing an additional outlet on a line where a primary socket is already connected. Typically for use on a DEL ii) For use on a telephone system where a primary socket is unnecessary |
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| Extranet | Where space can be used on someone else’s intranet. Also used where more than one company want to share the same intranet for commercial purposes |