Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Free
Faster access than browser!
 

Asymmetric digital subscriber line

Index Asymmetric digital subscriber line

Asymmetric digital subscriber line (ADSL) is a type of digital subscriber line (DSL) technology, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. [1]

67 relations: ADSL loop extender, AM broadcasting, ANSI T1.413 Issue 2, Asynchronous transfer mode, Attenuation, Attenuation distortion, Bandwidth (computing), Bit rate, Burst noise, Carrierless amplitude phase modulation, Copper, Crosstalk, Demarcation point, Digital subscriber line, Digital subscriber line access multiplexer, Download, Downstream (networking), DSL filter, DSL modem, Duplex (telecommunications), Electronic filter, Flat rate, Forward error correction, G.992.1, G.992.2, G.992.3, G.992.3 Annex J, G.992.3 Annex L, G.992.4, G.992.5, Hertz, Internet, Internet access, Internet Protocol, ITU G.992.5 Annex M, Last mile, Latency (engineering), List of interface bit rates, Low-pass filter, Modem, Modulation, Orthogonal frequency-division multiplexing, OSI model, Overhead (computing), Plain old telephone service, Point-to-Point Protocol over ATM, Point-to-Point Protocol over Ethernet, Rate-Adaptive Digital Subscriber Line, Reed–Solomon error correction, Repetitive Electrical Impulse Noise, ..., Round-trip delay time, Signal, Signal-to-noise ratio, Single-pair high-speed digital subscriber line, STM-1, Symmetric digital subscriber line, Synchronous optical networking, Telecommunications network, Telephone call, Telephone company, Telephone exchange, Telephone line, Transmission Control Protocol, Upstream (networking), VDSL, Voice frequency, Wire gauge. Expand index (17 more) »

ADSL loop extender

A DSL loop extender or DSL 'repeater' is a device that a telephone company can place between subscriber premises equipment and central office interfaces to extend the distance and increase the channel capacity of digital subscriber line (DSL) connections.

New!!: Asymmetric digital subscriber line and ADSL loop extender · See more »

AM broadcasting

AM broadcasting is a radio broadcasting technology, which employs amplitude modulation (AM) transmissions.

New!!: Asymmetric digital subscriber line and AM broadcasting · See more »

ANSI T1.413 Issue 2

ANSI T1.413 is a technical standard that defines the requirements for the single asymmetric digital subscriber line (ADSL) for the interface between the telecommunications network and the customer installation in terms of their interaction and electrical characteristics.

New!!: Asymmetric digital subscriber line and ANSI T1.413 Issue 2 · See more »

Asynchronous transfer mode

Asynchronous transfer mode (ATM) is, according to the ATM Forum, "a telecommunications concept defined by ANSI and ITU (formerly CCITT) standards for carriage of a complete range of user traffic, including voice, data, and video signals".

New!!: Asymmetric digital subscriber line and Asynchronous transfer mode · See more »

Attenuation

In physics, attenuation or, in some contexts, extinction is the gradual loss of flux intensity through a medium.

New!!: Asymmetric digital subscriber line and Attenuation · See more »

Attenuation distortion

Attenuation distortion is the distortion of an analog signal that occurs during transmission when the transmission medium does not have a flat frequency response across the bandwidth of the medium or the frequency spectrum of the signal.

New!!: Asymmetric digital subscriber line and Attenuation distortion · See more »

Bandwidth (computing)

In computing, bandwidth is the maximum rate of data transfer across a given path.

New!!: Asymmetric digital subscriber line and Bandwidth (computing) · See more »

Bit rate

In telecommunications and computing, bit rate (bitrate or as a variable R) is the number of bits that are conveyed or processed per unit of time.

New!!: Asymmetric digital subscriber line and Bit rate · See more »

Burst noise

Burst noise is a type of electronic noise that occurs in semiconductors and ultra-thin gate oxide films.

New!!: Asymmetric digital subscriber line and Burst noise · See more »

Carrierless amplitude phase modulation

Carrierless amplitude phase modulation (CAP) is a variant of quadrature amplitude modulation (QAM).

New!!: Asymmetric digital subscriber line and Carrierless amplitude phase modulation · See more »

Copper

Copper is a chemical element with symbol Cu (from cuprum) and atomic number 29.

New!!: Asymmetric digital subscriber line and Copper · See more »

Crosstalk

In electronics, crosstalk is any phenomenon by which a signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.

New!!: Asymmetric digital subscriber line and Crosstalk · See more »

Demarcation point

In telephony, the demarcation point is the point at which the public switched telephone network ends and connects with the customer's on-premises wiring.

New!!: Asymmetric digital subscriber line and Demarcation point · See more »

Digital subscriber line

Digital subscriber line (DSL; originally digital subscriber loop) is a family of technologies that are used to transmit digital data over telephone lines.

New!!: Asymmetric digital subscriber line and Digital subscriber line · See more »

Digital subscriber line access multiplexer

A digital subscriber line access multiplexer (DSLAM, often pronounced DEE-slam) is a network device, often located in telephone exchanges, that connects multiple customer digital subscriber line (DSL) interfaces to a high-speed digital communications channel using multiplexing techniques.

New!!: Asymmetric digital subscriber line and Digital subscriber line access multiplexer · See more »

Download

In computer networks, to download (abbreviation DL) is to receive data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar systems.

New!!: Asymmetric digital subscriber line and Download · See more »

Downstream (networking)

In a telecommunications network or computer network, downstream refers to data sent from a network service provider to a customer.

New!!: Asymmetric digital subscriber line and Downstream (networking) · See more »

DSL filter

A DSL filter or microfilter is an analog low-pass filter installed between analog devices (such as telephones or analog modems) and a plain old telephone service (POTS) line.

New!!: Asymmetric digital subscriber line and DSL filter · See more »

DSL modem

A digital subscriber line (DSL) modem is a device used to connect a computer or router to a telephone line which provides the digital subscriber line service for connectivity to the Internet, which is often called DSL broadband.

New!!: Asymmetric digital subscriber line and DSL modem · See more »

Duplex (telecommunications)

A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions.

New!!: Asymmetric digital subscriber line and Duplex (telecommunications) · See more »

Electronic filter

Electronic filters are circuits which perform signal processing functions, specifically to remove unwanted frequency components from the signal, to enhance wanted ones, or both.

New!!: Asymmetric digital subscriber line and Electronic filter · See more »

Flat rate

A flat fee, also referred to as a flat rate or a linear rate, refers to a pricing structure that charges a single fixed fee for a service, regardless of usage.

New!!: Asymmetric digital subscriber line and Flat rate · See more »

Forward error correction

In telecommunication, information theory, and coding theory, forward error correction (FEC) or channel coding is a technique used for controlling errors in data transmission over unreliable or noisy communication channels.

New!!: Asymmetric digital subscriber line and Forward error correction · See more »

G.992.1

In telecommunications, ITU-T G.992.1 (better known as G.dmt) is an ITU standard for ADSL using discrete multitone modulation (DMT).

New!!: Asymmetric digital subscriber line and G.992.1 · See more »

G.992.2

In telecommunications, ITU G.992.2 (better known as G.lite) is an ITU standard for ADSL using discrete multitone modulation.

New!!: Asymmetric digital subscriber line and G.992.2 · See more »

G.992.3

ITU G.992.3 is an ITU (International Telecommunication Union) standard, also referred to as ADSL2 or G.dmt.bis.

New!!: Asymmetric digital subscriber line and G.992.3 · See more »

G.992.3 Annex J

Annex J is a specification in ITU-T recommendations G.992.3 and G.992.5 for all digital mode ADSL with improved spectral compatibility with ADSL over ISDN, which means that it is a type of naked DSL which will not disturb existing Annex B ADSL services in the same cable binder.

New!!: Asymmetric digital subscriber line and G.992.3 Annex J · See more »

G.992.3 Annex L

ITU-T G.992.3 Annex L is an optional specification in the ITU-T recommendation G.992.3 for ADSL2 titled Specific requirements for a Reach Extended ADSL2 (READSL2) system operating in the frequency band above POTS, therefore it is often referred to as Reach Extended ADSL2 or READSL2.

New!!: Asymmetric digital subscriber line and G.992.3 Annex L · See more »

G.992.4

ITU G.992.4 is a standard for splitterless ADSL2 with data rate mandatory capability reduced to 1.536 Mbit/s downstream and 512 kbit/s upstream.

New!!: Asymmetric digital subscriber line and G.992.4 · See more »

G.992.5

ITU G.992.5 (also referred to as ADSL2+, G.dmt.bis+, and G.adslplus) is an International Telecommunication Union standard for asymmetric digital subscriber line (ADSL) broadband Internet access.

New!!: Asymmetric digital subscriber line and G.992.5 · See more »

Hertz

The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

New!!: Asymmetric digital subscriber line and Hertz · See more »

Internet

The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.

New!!: Asymmetric digital subscriber line and Internet · See more »

Internet access

Internet access is the ability of individuals and organizations to connect to the Internet using computer terminals, computers, and other devices; and to access services such as email and the World Wide Web.

New!!: Asymmetric digital subscriber line and Internet access · See more »

Internet Protocol

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries.

New!!: Asymmetric digital subscriber line and Internet Protocol · See more »

ITU G.992.5 Annex M

Annex M is an optional specification in ITU-T recommendations G.992.3 (ADSL2) and G.992.5 (ADSL2+), also referred to as ADSL2 M and ADSL2+ M. This specification extends the capability of commonly deployed Annex A by more than doubling the number of upstream bits.

New!!: Asymmetric digital subscriber line and ITU G.992.5 Annex M · See more »

Last mile

The last mile or last kilometer is a colloquial phrase widely used in the telecommunications, cable television and internet industries to refer to the final leg of the telecommunications networks that deliver telecommunication services to retail end-users (customers).

New!!: Asymmetric digital subscriber line and Last mile · See more »

Latency (engineering)

Latency is a time interval between the stimulation and response, or, from a more general point of view, a time delay between the cause and the effect of some physical change in the system being observed.

New!!: Asymmetric digital subscriber line and Latency (engineering) · See more »

List of interface bit rates

This is a list of interface bit rates, is a measure of information transfer rates, or digital bandwidth capacity, at which digital interfaces in a computer or network can communicate over various kinds of buses and channels.

New!!: Asymmetric digital subscriber line and List of interface bit rates · See more »

Low-pass filter

A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a certain cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.

New!!: Asymmetric digital subscriber line and Low-pass filter · See more »

Modem

A modem (modulator–demodulator) is a network hardware device that modulates one or more carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted information.

New!!: Asymmetric digital subscriber line and Modem · See more »

Modulation

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a modulating signal that typically contains information to be transmitted.

New!!: Asymmetric digital subscriber line and Modulation · See more »

Orthogonal frequency-division multiplexing

In telecommunications, orthogonal frequency-division multiplexing (OFDM) is a method of encoding digital data on multiple carrier frequencies.

New!!: Asymmetric digital subscriber line and Orthogonal frequency-division multiplexing · See more »

OSI model

The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to its underlying internal structure and technology.

New!!: Asymmetric digital subscriber line and OSI model · See more »

Overhead (computing)

In computer science, overhead is any combination of excess or indirect computation time, memory, bandwidth, or other resources that are required to perform a specific task.

New!!: Asymmetric digital subscriber line and Overhead (computing) · See more »

Plain old telephone service

Plain old telephone service or plain ordinary telephone service (POTS) is a retronym for voice-grade telephone service employing analog signal transmission over copper loops.

New!!: Asymmetric digital subscriber line and Plain old telephone service · See more »

Point-to-Point Protocol over ATM

In computer networking, the Point-to-Point Protocol over ATM (PPPoA) is a layer 2 data-link protocol typically used to connect domestic broadband modems to ISPs via phone lines.

New!!: Asymmetric digital subscriber line and Point-to-Point Protocol over ATM · See more »

Point-to-Point Protocol over Ethernet

The Point-to-Point Protocol over Ethernet (PPPoE) is a network protocol for encapsulating PPP frames inside Ethernet frames.

New!!: Asymmetric digital subscriber line and Point-to-Point Protocol over Ethernet · See more »

Rate-Adaptive Digital Subscriber Line

Rate-adaptive digital subscriber line (RADSL) is a pre-standard asymmetric digital subscriber line (ADSL) solution.

New!!: Asymmetric digital subscriber line and Rate-Adaptive Digital Subscriber Line · See more »

Reed–Solomon error correction

Reed–Solomon codes are a group of error-correcting codes that were introduced by Irving S. Reed and Gustave Solomon in 1960.

New!!: Asymmetric digital subscriber line and Reed–Solomon error correction · See more »

Repetitive Electrical Impulse Noise

Repetitive Electrical Impulse Noise (REIN) is a term applied to some interference found on problematic DSL internet connections.

New!!: Asymmetric digital subscriber line and Repetitive Electrical Impulse Noise · See more »

Round-trip delay time

In telecommunications, the round-trip delay time (RTD) or round-trip time (RTT) is the length of time it takes for a signal to be sent plus the length of time it takes for an acknowledgement of that signal to be received.

New!!: Asymmetric digital subscriber line and Round-trip delay time · See more »

Signal

A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".

New!!: Asymmetric digital subscriber line and Signal · See more »

Signal-to-noise ratio

Signal-to-noise ratio (abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise.

New!!: Asymmetric digital subscriber line and Signal-to-noise ratio · See more »

Single-pair high-speed digital subscriber line

Symmetrical high-speed digital subscriber line (SHDSL) is a form of symmetric digital subscriber line (SDSL), a data communications technology for equal transmit and receive (i.e. symmetric) data rate over copper telephone lines, faster than a conventional voiceband modem can provide.

New!!: Asymmetric digital subscriber line and Single-pair high-speed digital subscriber line · See more »

STM-1

The STM-1 (Synchronous Transport Module level-1) is the SDH ITU-T fiber optic network transmission standard.

New!!: Asymmetric digital subscriber line and STM-1 · See more »

Symmetric digital subscriber line

A symmetric digital subscriber line (SDSL) is a digital subscriber line (DSL) that transmits digital data over the copper wires of the telephone network, where the bandwidth in the downstream direction, from the network to the subscriber, is identical to the bandwidth in the upstream direction, from the subscriber to the network.

New!!: Asymmetric digital subscriber line and Symmetric digital subscriber line · See more »

Synchronous optical networking

Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs).

New!!: Asymmetric digital subscriber line and Synchronous optical networking · See more »

Telecommunications network

A telecommunications network is a collection of terminal nodes, links are connected so as to enable telecommunication between the terminals.

New!!: Asymmetric digital subscriber line and Telecommunications network · See more »

Telephone call

A telephone call is a connection over a telephone network between the called party and the calling party.

New!!: Asymmetric digital subscriber line and Telephone call · See more »

Telephone company

A telephone company, also known as a telco, telephone service provider, or telecommunications operator, is a kind of communications service provider (CSP) (more precisely a telecommunications service provider or TSP) that provides telecommunications services such as telephony and data communications access.

New!!: Asymmetric digital subscriber line and Telephone company · See more »

Telephone exchange

A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises.

New!!: Asymmetric digital subscriber line and Telephone exchange · See more »

Telephone line

A telephone line or telephone circuit (or just line or circuit within the industry) is a single-user circuit on a telephone communication system.

New!!: Asymmetric digital subscriber line and Telephone line · See more »

Transmission Control Protocol

The Transmission Control Protocol (TCP) is one of the main protocols of the Internet protocol suite.

New!!: Asymmetric digital subscriber line and Transmission Control Protocol · See more »

Upstream (networking)

In computer networking, upstream refers to the direction in which data can be transferred from the client to the server (uploading).

New!!: Asymmetric digital subscriber line and Upstream (networking) · See more »

VDSL

Very-high-bit-rate digital subscriber line (VDSL) and very-high-bit-rate digital subscriber line 2 (VDSL2) are digital subscriber line (DSL) technologies providing data transmission faster than asymmetric digital subscriber line (ADSL).

New!!: Asymmetric digital subscriber line and VDSL · See more »

Voice frequency

A voice frequency (VF) or voice band is one of the frequencies, within part of the audio range, that is being used for the transmission of speech.

New!!: Asymmetric digital subscriber line and Voice frequency · See more »

Wire gauge

Wire gauge is a measurement of wire diameter.

New!!: Asymmetric digital subscriber line and Wire gauge · See more »

Redirects here:

ADSL, ADSL line, ADSL1, Adsl, Asymmetric DSL, Asymmetric Digital Subscriber Line, Asynchronous Digital Subscriber Line, Fastpath, Full-rate ADSL, Splitterless ADSL, Splitterless adsl.

References

[1] https://en.wikipedia.org/wiki/Asymmetric_digital_subscriber_line

OutgoingIncoming
Hey! We are on Facebook now! »