All Topics  
Cable modem

 
Cable Modem

 
   Email Print
   Bookmark   Link
 

 

Cable modem
 
 
  Topics Cable modem Topic Home

cable modem]] A cable modem is a type of modem
Modem

Modem is a peripheral device that modulation an analog carrier wave Signal to encode digital information, and also demodulation such a carrier signal to decode the transmitted information....
 that provides bi-directional data communication via radio frequency
Radio frequency

Radio frequency is a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves....
 channels on a cable television
Cable television

Cable television is a system of providing television to consumers via radio frequency signals transmitted to televisions through fixed optical fibers or coaxial cables as opposed to the over-the-air method used in traditional television broadcasting in which a television antenna is required....
 (CATV) infrastructure. Cable modems are primarily used to deliver broadband Internet access
Broadband Internet access

Broadband Internet access, often shortened to just broadband, is high data rate Internet access?typically contrasted with Dial-up internet access over a 56k modem....
 in the form of cable Internet
Cable internet

In telecommunications, cable Internet is a form of broadband Internet access that uses the cable television infrastructure. Like digital subscriber lines and Fiber to the premises, cable Internet bridges the Last mile from the Internet service provider to the subscriber....
, taking advantage of the high bandwidth of a cable television network. They are commonly deployed in Australia
Australia

Australia, officially the Commonwealth of Australia, is a country in the southern hemisphere comprising the Australia of the world's smallest continent, the major island of Tasmania, and numerous list of islands of Australia in the Indian Ocean and Pacific Oceans....
, Europe
Europe

Europe is, conventionally, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural , the Caspian Sea, and by the Caucasus Mountains to the southeast....
, and North
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
 and South
South America

South America is the southern continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere....
 America. In the USA alone there were 22.5 million cable modem users during the first quarter of 2005, up from 17.4 million in the first quarter of 2004.

id Networks developed, demonstrated and patented the first high-speed, asymmetrical cable modem system in 1990.






Discussion
Ask a question about 'Cable modem'
Start a new discussion about 'Cable modem'
Answer questions from other users
Full Discussion Forum



Encyclopedia


cable modem]] A cable modem is a type of modem
Modem

Modem is a peripheral device that modulation an analog carrier wave Signal to encode digital information, and also demodulation such a carrier signal to decode the transmitted information....
 that provides bi-directional data communication via radio frequency
Radio frequency

Radio frequency is a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves....
 channels on a cable television
Cable television

Cable television is a system of providing television to consumers via radio frequency signals transmitted to televisions through fixed optical fibers or coaxial cables as opposed to the over-the-air method used in traditional television broadcasting in which a television antenna is required....
 (CATV) infrastructure. Cable modems are primarily used to deliver broadband Internet access
Broadband Internet access

Broadband Internet access, often shortened to just broadband, is high data rate Internet access?typically contrasted with Dial-up internet access over a 56k modem....
 in the form of cable Internet
Cable internet

In telecommunications, cable Internet is a form of broadband Internet access that uses the cable television infrastructure. Like digital subscriber lines and Fiber to the premises, cable Internet bridges the Last mile from the Internet service provider to the subscriber....
, taking advantage of the high bandwidth of a cable television network. They are commonly deployed in Australia
Australia

Australia, officially the Commonwealth of Australia, is a country in the southern hemisphere comprising the Australia of the world's smallest continent, the major island of Tasmania, and numerous list of islands of Australia in the Indian Ocean and Pacific Oceans....
, Europe
Europe

Europe is, conventionally, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally divided from Asia to its east by the water divide of the Ural Mountains, the Ural , the Caspian Sea, and by the Caucasus Mountains to the southeast....
, and North
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
 and South
South America

South America is the southern continent of the Americas, situated entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere....
 America. In the USA alone there were 22.5 million cable modem users during the first quarter of 2005, up from 17.4 million in the first quarter of 2004.

History


Hybrid Networks

Hybrid Networks developed, demonstrated and patented the first high-speed, asymmetrical cable modem system in 1990. A key Hybrid Networks insight was that highly asymmetrical communications would be sufficient to satisfy consumers connected remotely to an otherwise completely symmetric high-speed data communications network. This was important because it was very expensive to provide high speed in the upstream direction, while the CATV systems already had substantial broadband capacity in the downstream direction. Also key was that it saw that the upstream and downstream communications could be on the same or different communications media using different protocols working in each direction to establish a closed loop communications system. The speeds and protocols used in each direction would be very different. The earliest systems used the public switched telephone network (PSTN) for the return path since very few cable systems were bi-directional. Later systems used CATV for the upstream as well as the downstream path.

There was extreme skepticism to this approach initially. In fact, many technical people doubted that it could work at all. Hybrid's system architecture is used for most cable modem systems today.

LANcity

LANcity was an early pioneer in cable modems, developing a proprietary system that was widely deployment in the US. LANcity was sold to Bay Networks
Bay Networks

Bay Networks was a network hardware vendor formed through the merger of Santa Clara, California based SynOptics Communications and Billerica, Massachusetts based Wellfleet Communications on July 6, 1994....
 which was then acquired by Nortel
Nortel

Nortel Networks Corporation , formerly known as Northern Telecom Limited and sometimes known simply as Nortel, is a Multinational corporation telecommunications equipment manufacturing headquartered in Toronto, Ontario, Canada....
, which eventually spun the cable modem business off as ARRIS
Arris

Arris is an architecture term that describes the sharp edge formed by the intersection of two surfaces, such as the corner of a Concrete Masonry Unit; the junction between two planes of plaster or any intersection of divergent architectural details....
. ARRIS
Arris

Arris is an architecture term that describes the sharp edge formed by the intersection of two surfaces, such as the corner of a Concrete Masonry Unit; the junction between two planes of plaster or any intersection of divergent architectural details....
 continues to make cable modems and CMTS equipment compliant with the DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 standard.

Com21

Com21 was another early pioneer in cable modems, and quite successful until proprietary systems were obsoleted by the DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 standardization. The Com21 system used a ComController as central bridge in CATV network head-ends, the ComPort cable modem in various models and the NMAPS management system using HP OpenView as platform. Later they also introduced a return path multiplexer to overcome noise problems when combining return path signals from multiple areas. The proprietary protocol was based on Asynchronous Transfer Mode
Asynchronous Transfer Mode

Asynchronous Transfer Mode is an electronic digital data transmission technology. ATM is implemented as a network protocol and was first developed in the mid 1980s....
 (ATM). The central ComController switch was a modular system offering one downstream channel (transmitter) and one management module. The remaining slots could be used for upstream receivers (2 per card), dual Ethernet 10BaseT and later also Fast-Ethernet and ATM interfaces. The ATM interface became the most popular, as it supported the increasing bandwidth demands and also supported VLANs. Com21 developed a DOCSIS modem, but the company filed bankruptcy in 2003 and closed.

CDLP

CDLP was a proprietary system manufactured by Motorola
Motorola

Motorola, Inc. is an United States, multinational, Fortune 100, telecommunications company based in Schaumburg, Illinois. It is a manufacturer of wireless telephone handsets, also designing and selling wireless network infrastructure equipment such as cellular transmission base stations and signal amplifiers....
. CDLP customer premises equipment (CPE) was capable of both PSTN (telephone network) and radio frequency (cable network)
Cable network

Cable network is the most common colloquial term for a television channel available via cable television, particularly in the United States. Such channels are usually also available via satellite television, including direct broadcast satellite providers such as DirecTV, as well as through a variety of alternative means, although for simplici...
 return paths. The PSTN-based service was considered 'one way cable' and had many of the same drawbacks as satellite Internet service and, as a result, it quickly gave way to two-way cable. Cable modems that used the RF cable network for the return path were considered 'two-way cable', and were better able to compete with the bi-directional Digital Subscriber Line
Digital Subscriber Line

DSL or xDSL, is a family of technologies that provides digital data transmission over the wires of a local access network. DSL originally stood for digital subscriber loop, although in recent years, the term digital subscriber line has been widely adopted as a more marketing-friendly term for ADSL, which is the most popular...
 (DSL) service. The standard is in little use now while new providers use, and existing providers having changed to, the DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 standard. The Motorola CDLP proprietary CyberSURFR is an example of a device that was built to the CDLP standard, capable of a peak 10 Mbit/s downstream and 1.532 Mbit/s upstream. CDLP supported a maximum downstream bandwidth of 30 Mbit/s which could be reached by using several cable modems.

The Australia
Australia

Australia, officially the Commonwealth of Australia, is a country in the southern hemisphere comprising the Australia of the world's smallest continent, the major island of Tasmania, and numerous list of islands of Australia in the Indian Ocean and Pacific Oceans....
n ISP BigPond
BigPond

BigPond is an Australian Internet service provider and is a subsidiary of Telstra. BigPond is Australia's largest ISP, and as a subsidiary of Telstra, has a majority share of internet penetration in Australia, primarily due to Telstra owning most telephone exchanges....
 employed this system when it started cable modem tests in 1996. For a number of years cable Internet access was only available in Sydney
Sydney

Sydney is the List of cities in Australia by population in Australia, with a metropolitan area population of approximately 4.34 million . It is the List of Australian capital cities of New South Wales, and was the site of the first British Empire colony in Australia....
, Melbourne
Melbourne

Melbourne is the more common name for the geographic region and Census in Australia of the Greater Melbourne metropolitan area. It is the second List of cities in Australia by population in Australia, with a population of approximately 3.8 million and serves as the List of Australian capital cities of Victoria ....
 and Brisbane
Brisbane

Brisbane is the state List of Australian capital cities of Queensland and its most populous city. It is also the List of cities in Australia by population in Australia, behind southern rivals Sydney and Melbourne....
 via CDLP. This network ran parallel to the newer DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 system for several years. In 2004, the CDLP network was terminated and replaced by DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
.

IEEE 802.14

In the mid-1990s the IEEE 802
IEEE 802

IEEE 802 refers to a family of IEEE standards dealing with local area networks and metropolitan area networks.More specifically, the IEEE 802 standards are restricted to networks carrying variable-size packets....
 committee formed a subcommittee (802.14) to develop a standard for cable modem systems. While significant progress was made, the group was disbanded when North American multi system operator
Multi system operator

A multiple system operator or multi system operator is an operator of multiple cable television systems. A cable system in the US, by FCC definition, is a facility serving a single community or a distinct governmental entity, each with its own franchise agreement with the cable company....
s instead backed the then-fledgling DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 specification.

DOCSIS

In the late 1990s, a consortium of US cable operators, known as "MCNS" formed to quickly develop an open and interoperable cable modem specification. The group essentially combined technologies from the two dominant proprietary systems at the time, taking the physical layer
Physical layer

The Physical Layer is the first and lowest layer in the seven-layer OSI model of computer networking.The Physical Layer comprises the basic hardware transmission technologies of a network....
 from the Motorola
Motorola

Motorola, Inc. is an United States, multinational, Fortune 100, telecommunications company based in Schaumburg, Illinois. It is a manufacturer of wireless telephone handsets, also designing and selling wireless network infrastructure equipment such as cellular transmission base stations and signal amplifiers....
 CDLP system and the MAC layer from the LANcity system. When the initial specification had been drafted, the MCNS consortium handed over control of it to CableLabs
CableLabs

Founded in 1988 by cable television operating companies, Cable Television Laboratories, Inc. is a not-for-profit research and development consortium that has cable operators as its members....
 which maintained the specification, promoted it in various standards organizations (notably SCTE
SCTE

The Society of Cable Telecommunications Engineers or SCTE is a non-profit professional association for the advancement of technology related to cable telecommunications engineering....
 and ITU
Itu

Itu is a old and historic municipality in the state of S?o Paulo in Brazil. The population in 2004 is 149,758 and the area is 641.68 km?. The elevation is 583 m....
), developed a certification testing program for cable modem equipment, and has since drafted multiple extensions to the original specification. Virtually all cable modems operating in the field today are compliant with one of the DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 versions. Because of the differences in the European PAL
PAL

PAL, short for Phase Alternating Line, is a color-encoding system used in broadcast television systems in large parts of the world. Other common analog television systems are SECAM and NTSC....
 and USA's NTSC
NTSC

NTSC is the analog television system used in most of the Americas, Japan, South Korea, Taiwan, the Philippines, Burma, and some Pacific island nations and territories ....
 systems two main versions of DOCSIS exist, DOCSIS and EuroDOCSIS. The main differences are found in the width of RF-channels: 6 MHz for the USA and 8 MHz for Europe. Nearly all current cable modem systems use a version of this standard with the exception of those in Japan
Japan

Japan is an island country in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, People's Republic of China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south....
.

Cable modems and VoIP

With the advent of Voice over Internet Protocol (VoIP) telephony, cable modems have been extended to provide telephone service. Many people with cable modem service have opted to eliminate their Plain Old Telephone Service
Plain old telephone service

Plain old telephone service is the voice-grade telephone service that remains the basic form of residential and small business service connection to the telephone network in most parts of the world....
 (POTS). Because many telephone companies do not offer naked DSL
Naked DSL

A naked DSL is a digital subscriber line without a PSTN service — or the associated dial tone. In other words, only a standalone DSL Internet service is provided on the local loop....
 (DSL service without POTS
POTS

POTS may refer to:* Plain old telephone service, basic wireline telecommunication connection* Postural orthostatic tachycardia syndrome, a medical condition...
 line service), VoIP use is higher amongst cable modem users.

Any high-speed Internet service subscriber can use VoIP telephony by subscribing to a third-party service (e.g., Vonage
Vonage

Vonage is a publicly-held commercial voice over IP computer network and Session Initiation Protocol company that provides telephone service via a broadband connection ....
, Skype
Skype

Skype is software that allows users to make voice over Internet Protocol. Calls to other users of the service and to free-of-charge numbers are free, while calls to other landlines and mobile phones can be made for a fee....
). As an alternative, many cable operators offer a VoIP service based on PacketCable
PacketCable

PacketCable is an industry consortium founded by CableLabs with the goal of defining standards for the cable television modem access industry....
. PacketCable allows Multi system operator
Multi system operator

A multiple system operator or multi system operator is an operator of multiple cable television systems. A cable system in the US, by FCC definition, is a facility serving a single community or a distinct governmental entity, each with its own franchise agreement with the cable company....
s (MSOs) to offer both high-speed Internet and VoIP through a combined customer premise equipment, known as an Embedded Multimedia Terminal Adapter (EMTA or E-MTA). An EMTA is a cable modem and a VoIP adapter (known as a Multimedia Terminal Adapter) bundled into a single device. PacketCable service has a significant technical advantage over third-party providers in that voice packets are given guaranteed Quality of Service
Quality of service

In the field of computer networking and other packet-switched telecommunication networks, the Traffic engineering term quality of service refers to resource reservation control mechanisms rather than the achieved service quality....
 across their entire transmission path so that call quality can be assured.

Network architectural functions

In network topology, a cable modem is a network bridge
Network bridge

A network bridge connects multiple network segments at the data link layer of the OSI model, and the term layer 2 switch is very often used interchangeably with bridge....
 that conforms to IEEE 802.1D
IEEE 802.1D

802.1D is the IEEE Media Access Control Bridges standard which includes Bridging , Spanning tree protocol, IEEE 802.11c and others. It is standardized by the IEEE 802.1 working group....
 for Ethernet
Ethernet

Ethernet is a family of Data frame-based computer networking technologies for local area networks . The name comes from the physical concept of the Luminiferous aether....
 networking (with some modifications). The cable modem bridges Ethernet frames between a customer LAN
Lan

Lan , in Polish language means "field," and is a unit of land measurement used in Poland. Since the 13th century, its value has varied from one location to another....
 and the coax cable network.

With respect to the OSI model
OSI model

The Open Systems Interconnection Reference Model is an abstract description for layered communications and computer network protocol design. It was developed as part of the Open Systems Interconnection initiative....
 of network design, a cable modem is both Physical Layer
Physical layer

The Physical Layer is the first and lowest layer in the seven-layer OSI model of computer networking.The Physical Layer comprises the basic hardware transmission technologies of a network....
 (Layer 1) device and a Data Link Layer
Data link layer

The Data Link Layer is layer 2 of the seven-layer OSI model of computer networking.The Data Link Layer is the protocol layer which transfers data between adjacent network nodes in a wide area network or between nodes on the same local area network network segment....
 (Layer 2) forwarder. As an IP address
IP address

An Internet Protocol address is a numerical identification that is assigned to devices participating in a computer network utilizing the Internet Protocol for communication between its nodes....
able network node, cable modems support functionalities at other layers.

Layer 1 is implemented in the Ethernet PHY on its LAN interface
Network interface

In telecommunications and computer networking, a network interface is one of:#The point of interconnection between a User computer terminal and a private or public computer network....
, and a DOCSIS
DOCSIS

Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
 defined cable-specific PHY on its HFC
Hybrid fibre-coaxial

Hybrid fibre-coaxial is a telecommunications industry term for a broadband telecommunications network which combines optical fiber and coaxial cable....
 cable interface. The term cable modem refers to this cable-specific PHY. The Network Layer
Network layer

The Network Layer is Layer 3 in the OSI model of computer networking. The Network Layer responds to service requests from the Transport Layer and issues service requests to the Data Link Layer....
 (Layer 3) is implemented as a IP
Internet protocol

Internet protocol may refer to:*The Internet Protocol, a specific protocol implementation in the Internet protocol suite*The Internet protocol suite, a set of communications protocols that are used for the Internet...
 host in that it has its own IP address
IP address

An Internet Protocol address is a numerical identification that is assigned to devices participating in a computer network utilizing the Internet Protocol for communication between its nodes....
 used by the network operator to maintain the device. In the Transport Layer
Transport layer

In computer networking, the Transport Layer is a group of methods and protocols within a layered architecture of network components, within which it is responsible for encapsulating application data blocks into datagrams suitable for transfer to the network infrastructure for transmission to the destination host, or managing the reverse tran...
 (Layer 4) the cable modem supports UDP
User Datagram Protocol

The User Datagram Protocol is one of the core members of the Internet Protocol Suite, the set of network protocols used for the Internet. With UDP, computer applications can send messages, sometimes known as datagram, to other hosts on an Internet Protocol network without requiring prior communications to set up special transmission cha...
 in association with its own IP address, and it supports filtering based on TCP and UDP port
TCP and UDP port

In computer networking, a port is an application-specific or process-specific software construct serving as a communications endpoint used by Transport layer protocols of the Internet protocol suite such as Transmission Control Protocol and User Datagram Protocol ....
 numbers to, for example, block forwarding of NetBIOS
NetBIOS

NetBIOS is an acronym for Network Basic Input/Output System. It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network....
 traffic out of the customer's LAN. In the Application Layer
Application layer

Application Layer is a term used in categorizing protocols and methods in architectural models of computer networking. Both, the OSI model and the Internet Protocol Suite contain an application layer....
 (Layer 7), the cable modem supports certain protocols that are used for management and maintenance, notably DHCP
Dynamic Host Configuration Protocol

Dynamic Host Configuration Protocol is a network application protocol used by devices to obtain configuration information for operation in an Internet Protocol network....
, SNMP
Simple Network Management Protocol

Simple Network Management Protocol is used in network management systems to Network monitoring network-attached devices for conditions that warrant administrative attention....
, and TFTP
Trivial File Transfer Protocol

Trivial File Transport Protocol is a Computer file transfer network protocol, with the functionality of a very basic form of File Transfer Protocol ; it was first defined in 1980....
.

Some cable modems may incorporate a router
Router

A router is a Computer network device whose software and hardware are usually tailored to the tasks of routing and forwarding information. For example, on the Internet, information is directed to various paths by routers....
 and a DHCP server to provide the LAN with IP
Internet protocol

Internet protocol may refer to:*The Internet Protocol, a specific protocol implementation in the Internet protocol suite*The Internet protocol suite, a set of communications protocols that are used for the Internet...
 network addressing. From a data forwarding and network topology perspective, this router functionality is typically kept distinct from the cable modem functionality (at least logically) even though the two may share a single enclosure and appear as one unit. So, the cable modem function will have its own IP address
IP address

An Internet Protocol address is a numerical identification that is assigned to devices participating in a computer network utilizing the Internet Protocol for communication between its nodes....
 and MAC address
MAC address

In computer networking, a Media Access Control address , Ethernet Hardware Address , hardware address, adapter address or physical address is a quasi-unique identifier assigned to most network adapters or network interface cards by the manufacturer for identification....
 as will the router.

Cable modem manufacturers


See also

  • Cable internet
    Cable internet

    In telecommunications, cable Internet is a form of broadband Internet access that uses the cable television infrastructure. Like digital subscriber lines and Fiber to the premises, cable Internet bridges the Last mile from the Internet service provider to the subscriber....
  • Cable modem termination system
    Cable modem termination system

    A cable modem termination system or CMTS is equipment typically found in a cable television company's Cable television headend, or at cable company hubsite, and is used to provide high speed data services, such as Cable modem or Voice over IP, to cable subscribers....
  • Cable telephone
  • DOCSIS
    DOCSIS

    Data Over Cable Service Interface Specification is an international standard developed by CableLabs and contributing companies that include ARRIS, BigBand Networks, Broadcom, Cisco, Conexant, Correlant, Harmonic, Intel, Motorola, Netgear, Terayon, and Texas Instruments....
  • Hybrid fibre-coaxial
    Hybrid fibre-coaxial

    Hybrid fibre-coaxial is a telecommunications industry term for a broadband telecommunications network which combines optical fiber and coaxial cable....
  • List of device bandwidths
    List of device bandwidths

    This is a list of device bandwidths: the net bit rate of some computer devices employing methods of data transport is quantified in units of kilobits per second , megabits per second , or gigabits per second as appropriate....
  • Residential gateway
    Residential gateway

    A residential gateway is a home networking device. The term is generally used to cover any networking appliance used in homes. The term however is misleading....
  • Triple play (telecommunications)
    Triple play (telecommunications)

    In telecommunications, the triple play service is a marketing term for the provisioning of the two broadband services, Broadband Internet access and television, and one narrowband service, telephone, over a single broadband connection....
  • HomePNA
    HomePNA

    The HomePNA Alliance is an incorporated non-profit industry association of companies that develops and standardizes technology for home networking over the existing coaxial cables and phone wires within the home....


External links