UK Telecoms and ICT Index and Links - D

DATA PROTECTION
Everyone and particularly business and government must protect data they collect and store about individuals.

external links:Data protection and the Internet
the original Internet specific info has been removed but here are the principles
Information Commissioner
Previuosly the Data Protection Commissioner

information sheets:Internet communications, websites and the law
Update and clean mailing lists

features:Small business network security

related index entries:FAX PREFERENCE SERVICE
TELEPHONE PREFERENCE SERVICE


DATA STORAGE

information sheets:Storing and transferring data


DATACONFERENCING
Where typed messages are transferred over the Internet in (near to) real time and all parties conference simultaneously. Examples include chat rooms and application sharing in the business context.

information sheets:Telephone, data and videoconferencing over the Internet
VoIP, Voice over Internet Protocol and Internet telephone calls

features:Conferencing calls, teleconferencing and videoconferencing

related index entries:TELECONFERENCING


DDI - Direct Dialing In
A facility enabling callers to dial exchange line numbers which connect them direct to extensions on a PBX without going through an operator.

features:Building a customer relationship management (CRM) strategy

related index entries:CALL MANAGEMENT
MSN - Multiple Subscriber Numbering


DECT - Digital European Cordless Telecommunications
A Europe-wide standard for digital fixed wireless telephony, used for cordless extensions to PBXs and home cordless telephony.

external links:Intellect (an amalgamation of the Federation of the Electronics Industry FEI and the CSSA)
The 'voice of the industry' with good links to information about mobile health issues among other techie stuff.

information sheets:Cordless and DECT phones applications & products
Introduction to telecoms terms and technologies

features:Mobile phone and wireless health risks

related index entries:CORDLESS TELEPHONE
WIRELESS TELEPHONY


DIAL-UP
Usually used to denote the standard connection to an Internet Service Provider using a modem, but more generally a non-permanent connection between two computers or networks achieved over the public telephone network by dialing the telephone number of the device the remote computer/network is connected to.

information sheets:Getting connected to the Internet

features:Broadband - a Guide for Small Businesses
Broadband bandwidth download speed

related index entries:CONNECTIVITY


DIEL - Advisory Committee for Disabled and Elderly People
Committee set up in 1984 to advise Oftel on the particular interests and needs of consumers who are elderly or disabled. Awaiting revival under Ofcom.

external links:DIEL (Advisory Committee for Disabled and Elderly People)
Advisory Committee for Disabled and Elderly People became defunct after Oftel was absorbed by Ofcom

related index entries:ACTs - Advisory Committees on Telecommunications


DIGITAL
Digital data is the coded representation of a waveform as binary digits. All computer data is digital - hence anything that can be broken down into digits, including sound and video as well as text and graphics, can be processed by a computer or transmitted via a digital phone line. Digital connections are faster than analogue and offer higher capacity. Examples include ISDN and GSM.

related index entries:ANALOGUE


DIRECTORY ENQUIRIES
A telephone service which can provide a telephone number if you have the name and address of the subscriber and they are not ex-directory.

external links:Oftel guide to Directory Enquiries services
The Guardian Online report
The Guardian reports on Directory Enquires services and costs

FAQs:What has happened to Directory Enquiries on 192?


DISCUSSION FORUM
A conference area on a website where users can post messages giving information on any subject, such as product releases and industry developments.

information sheets:virtual communities as a business network

related index entries:VIRTUAL COMMUNITY


DISINTERMEDIATION
Used to describe the elimination of intermediaries from a business process, often in service industries, where a company makes transactions directly with its customers. Examples include airline companies selling tickets direct to passengers over the Web, and the replacement of bank branches with online banking.

related index entries:E-COMMERCE or ELECTRONIC COMMERCE


DOMAIN NAME
Technical name for website and e-mail addresses. Domain names are unique and must be registered.

external links:NetNames
Domain name registration and management
Nominet
the UK registry for all .uk domain names
Register.com
domain name registration and web hosting
UK2net
domain name registration, hosting, colocation and managed server leasing
Ukreg
Domain name registration and hosting

information sheets:business email applications and services
Registering a domain name


DSLAM
A digital subscriber line access multiplexer (DSLAM) delivers exceptionally high-speed data transmission over existing copper telephone lines. A DSLAM separates the voice-frequency signals from the high-speed data traffic and controls and routes digital subscriber line (xDSL) traffic between the subscriber's end-user equipment (router, modem, or network interface card [NIC]) and the network service provider's network.




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