Business telecommunications and IT systems

The E series Recommendations from the ITU-T regarding operations, numbering and routing.

The old fashioned term for DC5. Stands for Ear and Mouth.

Uses Dial Pulse signalling.

e-business ("electronic business" derived from such terms as email 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.

Not to be confused with e-commerce.

e-commerce (electronic commerce) is the buying and selling of goods and services on the Internet, especially on 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.

see e-business.

see email.

see email client.

see email server.

A set of software that facilitates the electronic processing of business transactions using email as an enabling technology.

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 signalling and Pulse Code Modulation.

Not to be confused with a T1 circuit.

The common name for the (almost) worldwide digital 2.048Mbit/s E1 circuit service.

A ITU-T and BT SMDS term.

An addressing type used with address screening to create closed user groups on BT's SMDS network.

A BT term for a circuit offering 8.192Mbit/s bandwidth.

A BT term for a circuit offering 34Mbit/s bandwidth.

see E & M.

A PABX telephony term.

An old method of signalling from an analogue telephone (POT) to the CPU of a telephone system to place the current call on hold and provide internal dial tone.

Depressing the Recall button shorted one of the two signalling wires to earth.

Replaced by Timed Break Recall.

Extended Binary Code Decimal Interchange Code.

An IBM 8 bit character code set.

Error Checking and Correcting.

see Error Correction.

The European Computer Manufacturers Association which, amongst many other standards, wrote the signalling protocol standard for the interconnection of PBXs known as Q.sig.

This standard was later accepted by ETSI.

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. Instead, a software upgrade is sufficient.

A network converted to EDGE will allow speeds of up to 384kbit/s or higher, which is 6 times more than that which can be reached with an ordinary land line modem.

Extended Data Out RAM.

This form of RAM is faster than DRAM by 10%.