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Free research papers and essays on topics related to: catv

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  • Cable Modems: Cable Tv Meets The Internet - 3,872 words
    Cable Modems: Cable Tv Meets The Internet Cable Modems: Cable TV Meets the Internet John G. Shaw IS 3348 October 2, 1999 Abstract The Telecommunications Act of 1996 opened the way for cable TV (CATV) companies to become full-fledged telecommunications companies, offering two-way voice and data communications services, in addition to television programming. After passage of the Act, the cable companies were eager to expand into the new fields of business that had been opened to them, especially the rapidly growing Internet Service Provider (ISP) business. The biggest hurdle facing the cable companies is that cable television systems were designed for one-way traffic, and must be upgraded into ...
    Related: cable, cable modems, cable television, internet access, internet connection, internet service, internet service provider
  • Cable Modems: Cable Tv Meets The Internet - 3,910 words
    ... downstream traffic travels through the cable modem's Media Access Control mechanism. The MAC mechanism's functions are fairly complex. The MAC mechanism's main purpose is to implement MAC protocols under the direction of the CMTS. MAC protocols are used to time-share the cable media among the various cable modems in a cable data network. The MAC processes can be implemented in hardware, or a combination of software and hardware. Both the CMTS and the MAC mechanism implement MAC protocols to perform ranging procedures to compensate for cable media delays and line losses. The CMTS also interfaces with the MAC mechanism in each cable modem to assign upstream frequencies and upstream time s ...
    Related: cable, cable modems, internet access, internet connection, internet protocol, internet service, internet usage
  • Dsl Vs Cable - 1,452 words
    Dsl Vs Cable Cable Modems and ADSL Two modem technologies have emerged over the past year for switched data communications services. Cable Modems operate over two-way hybrid fiber/coax and provide user rates as high as 10 Mbps. ADSL Modems (Asymmetric Digital Subscriber Lines) operate over existing copper telephone lines and provide rates as high as 9 Mbps. Both technologies address the large markets for Internet access, remote LAN access for work at home and telecommuting, and network access for the hundreds of millions of personal computers in place today and to be sold over the next ten years. Cable modems may offer more raw speed than ADSL, but that advantage is compromised by inevitable ...
    Related: cable, cable modems, pricing strategies, market share, telephone
  • Internet - 1,795 words
    ... ceasta tehnologie este disponibila atit pentru firme, cit si pentru utilizatori individuali. Adevarata explozie in domeniul exploatarii retelei X-telecomului a constituit-o mai recenta tehnologie ADSL(asymetric digital subscriber line). In momentul de fata, este cea mai avansata tehnologie din lume, ce transforma banala pereche de sirme din cupru in linii digitale de mare viteza pentru acces Internet ultra-rapid. Modemurile ADSL folosesc o tehnica de codare digitala care nu interfereaza cu serviciile conventionale de voce. Aceasta inseamna ca poti vorbi la telefon, sau trimite un fax, simultan cu navigarea pe Internet. Modemurile sunt asimterice pentru ca transmit datele din downstream m ...
    Related: business week, distance learning, video on demand, format, backbone
  • Network And Internet Connections - 1,527 words
    ... id Fiber and Coax(HFC) networks. Transmission over fiber-optic cable has two main advantages over coaxial cable: A wider range of frequencies can be sent over the fiber, increasing the bandwidth available for transmission; Signals can be transmitted greater distances without amplification. The main disadvantage of fiber is that the optical components required to send and receive data over it are expensive. Because lasers are still too expensive to deploy to each subscriber, network developers have adopted an intermediate Fiber to the Neighborhood (FTTN)approach. Figure 3.3: Fiber to the Neighborhood (FTTN) architecture Various locations along the existing cable are selected as sites fo ...
    Related: internet access, internet service, network, network technology, case study
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