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  2. Automatic number announcement circuit - Wikipedia

    en.wikipedia.org/wiki/Automatic_number...

    The specifications define several test features for line conditions, such as quiet line and busy line, and test tones transmitted to callers. Telephone numbers are assigned for ring back to test the ringer when installing telephone sets, milliwatt tone (a number simply answers with a continuous test tone ) and a loop around (which connects a ...

  3. Party line (telephony) - Wikipedia

    en.wikipedia.org/wiki/Party_line_(telephony)

    A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers. [ 1 ] [ 2 ] [ 3 ] Party line systems were widely used to provide telephone service, starting with the first commercial switchboards in 1878. [ 4 ]

  4. Lineman's handset - Wikipedia

    en.wikipedia.org/wiki/Lineman's_handset

    A lineman's handset typically connects via a pair of test leads, not the modular connector found on most consumer telephone equipment. The test leads will feature some combination of alligator clips (to connect to bare wires), a piercing spike or "bed-of-nails" (for insulated wires), and something designed to fit a punch block.

  5. Small Business Phone System: A Guide to Service Types ... - AOL

    www.aol.com/small-business-phone-system-guide...

    Learn about conventional and modern small business phone services, from technologies to equipment, to decide which solution is best for your company. Small Business Phone System: A Guide to ...

  6. Telco cable - Wikipedia

    en.wikipedia.org/wiki/Telco_cable

    A telco cable, also known as a Telecom cable or Amphenol cable, is a thick cable used for connecting multiple voice or data lines for LANs or telecommunications. The ends use 25 pairs of polarized pins (50 pins total). [1] This cable handles up to 25 data channels or phone lines. [2] The name Amphenol comes from the company that first ...

  7. Landline - Wikipedia

    en.wikipedia.org/wiki/Landline

    Landline service is typically provided through the outside plant of a telephone company's central office, or wire center. The outside plant comprises tiers of cabling between distribution points in the exchange area, so that a single pair of copper wire, or an optical fiber, reaches each subscriber location, such as a home or office, at the network interface.

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