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Search Results: "ISDN"

  1. ISDN

    Abbreviation of integrated services digital network, an international communications standard for sending voice, video, and data over digital telephon...

    /TERM/I/ISDN.html

  2. broadband ISDN (B-ISDN)

    A standard for transmitting voice, video and data at the same time over fiber optic telephone lines. Broadband ISDN can support data rates of 1.5 mill...

    /TERM/B/broadband_ISDN_B_ISDN.html

  3. IDSL

    Short for ISDN Digital Subscriber Line, a method of providing DSL technology over existing ISDN lines. Even though the transfer rates for IDSL are abo...

    /TERM/I/IDSL.html

  4. Dial-Up Modem Standards

    Dial-up modems utilize traditional copper phone lines to transmit analog signals. Out of all types of modems - dial-up, ISDN, DSL, cable - dial-up con...

    /quick_ref/dialup_modem_standards.asp

  5. SPID

    Acronym for Service Profile Identifier, a number that identifies a specific ISDN line. When you obtain ISDN service, your telephone company assigns a ...

    /TERM/S/SPID.html

  6. PRI

    Short for Primary-Rate Interface, a type of ISDN service designed for larger organizations. PRI includes 23 B-channels (30 in Europe) and one D-Channe...

    /TERM/P/PRI.html

  7. D-channel

    Short for Delta-channel, the channel in an ISDN connection that carries control and signaling information. Basic Rate ISDN (BRI) service consists of t...

    /TERM/D/D_channel.html

  8. B-channel

    Short for Bearer-channel, the main data channel in an ISDN connection. Basic Rate ISDN (BRI) service consists of two 64 Kbps B-channels, and one D-cha...

    /TERM/B/B_channel.html

  9. terminal adapter

    A device that connects a computer to an external digital communications line, such as an ISDN line. A terminal adapter is a bit like a modem, but wher...

    /TERM/T/terminal_adapter.html

  10. PSTN

    Short for Public Switched Telephone Network, which refers to the international telephone system based on copper wires carrying analog voice data. This...

    /TERM/P/PSTN.html

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