Media & Resources

Industry Glossary

Cable Terms and Definitions

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Definition
ACMA

The Australian Communications and Media Authority (http://www.acma.gov.au/)

ADSL

Asymmetrical Digital Subscriber Line - DSL variant that allows for greater bandwidth for incoming than outgoing signals.

Analog

A transmission standard that uses variable frequencies and amplitudes of electrical impulses to emulate the audio waveform of sound. An analog telephone line is referred to as a Plain Old Telephone Service (POTS) line. Traditional form of telecommunications transmission in a constant variable wave, rather than in packet-based (or digital) form.

ARPU

Average Revenue Per User

ASSI Indonesian Satellite Association
ASTRA

Australian Subscription Television and Radio Association (http://www.astra.org.au/)

Backbone

A backbone is a larger transmission line that carries data gathered from smaller lines that interconnect with it. 1) At the local level, a backbone is a line or set of lines that local area networks connect to for a wide area network connection or within a local area network to span distances efficiently (for example, between buildings). 2) On the Internet or other wide area network, a backbone is a set of paths that local or regional networks connect to for long-distance interconnection. The connection points are known as network nodes or telecommunication data switching exchanges (DSEs).

Backhaul

In satellite communication, backhaul is used to mean getting data to a point from which it can be distributed over a network. For example, to deliver a live television program from Chicago to authorized DirecPC satellite terminals around the country, the video signals would have to be backhauled by some means (by optical fiber cable or by another satellite system) to the Hughes DirecPC facility in Germantown, Maryland. From there, it would be uplinked to the Galaxy IV satellite from which DirecPC users could view the broadcast (receive it in a downlink from the satellite at their individual terminals). Backhauling is also used to get non-live audio and video material to distribution points at the major broadcast news organizations for broadcast in the evening or ongoing news.

Bandwidth

Bandwidth refers to how much data you can send through a network or modem connection. It is usually measured in bits per second, or "bps." You can think of bandwidth as a highway with cars travelling on it. The highway is the network connection and the cars are the data. The wider the highway, the more cars can travel on it at one time. Therefore more cars can get to their destinations faster. The same principle applies to computer data -- the more bandwidth, the more information that can be transferred within a given amount of time.

BCA Building and Construction Authority (http://www.bca.gov.sg/)
Broadband Video Services Watching "traditional" TV content over broadband
BS Broadcast Satellites
BTRC Bangladesh Telecommunication Regulatory Commission (http://www.btrc.gov.bd/)
BWA Broadband Wireless Access
Cable Cable TV operator
CAGR

Compound Annual Growth Rate - The year-over-year growth rate of an investment over a specified period of time.

CAS

Conditional Access System - A system to control subscriber access to broadcast services, programmes and events.

C-Band

Frequency originally allocated for communications satellites - 3.7-4.2 GHz for downlink, 5.925-6.425 GHz for uplink; lower C-band frequencies are more robust for transmissions in rainy weather, compared to Ku- or Ka-band frequencies.

C-Band satellite

3.7-4.2 gigahertz (Ghz) frequency band used for distribution of programming by most satellite and cable networks.

CDMB (technology standard - China Association for Standardization)
CPM

Cost Per Mille - derived from the Latin 'mille' meaning thousand, hence Cost per Thousand. It means the cost of reaching one thousand members in the specified target audience.

CPT

Cost per TARP which means the cost in dollars of reaching 1% of the specified target audience.

CS Communications Satellites
Digital

(1) In communications and computer technology, digital refers to a method of encoding information using a binary system made up of zeroes and ones. In communications technology this takes the form of two very different electrical voltages, several volts positive and negative, to represent the two values. This substantial difference in voltages for each state makes it unlikely that minor fluctuations in voltage due to electro-magnetic interference will change the way a signal is interpreted when received.
(2) Information that is encoded into bits and bytes, or packets (0s and 1s, computer binary language). Generally perceived to be an advanced communication form offering clearer signals and increased transmission capacity.

DMB-TH Technology standard - Tsinghua University
DoT Department of Telecommunications (DoT) (http://www.dot.gov.in/)
Downlink

Signal path from satellite to earth, the opposite of earth-to-satellite uplink; downlinked signals are diffused and weak on approach to earth station receivers, and hence easily displaced by terrestrial WiMAX signals which are several thousand times stronger.

DRAM

Dynamic Random Access Memory. Computer memory that requires power to maintain the stored information.

DRM

Digital rights management - a systematic approach to copyright protection for digital media. DRM's purpose is to prevent illegal distribution of paid content over the Internet.

DSL

Digital Subscriber Line - Generic term for technologies that permit the delivery of broadband services over voice telephony networks.

DTH

Direct-To-Home - Typically refers to satellite TV broadcasting directly to a dish antenna on the roof of a house.

DTV - Digital TV

General term for TV services that are transmitted into the home digitally, where they are received either by a set-top box decoder, which converts them into analogue form for display on a conventional analogue TV set, or by an integrated digital TV receiver.

DVB

Digital Video Broadcasting - Collection of open standards for digital television maintained by the DVB Project. The family of DVB standards includes DVB-S (satellite), DVB (cable) DVB-T (terrestrial) and DVB-H (mobile handsets). DVB standards also cover conditional access (DVB-CA), software platforms for consumer video applications (DVB-MHP) and return channels.

DVB-H

Digital Video Broadcasting (DVB), is a suite of internationally accepted open standards for digital television. H stands for handheld.

DVR (Digital Video Recorder)

Devices that allow TV viewers to Timeshift, pause and fast forward (until realtime) using hard-drive video storage.