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  2. Switchboard operator - Wikipedia

    en.wikipedia.org/wiki/Switchboard_operator

    The switchboard operator was a person who manually connected calls by plugging and unplugging cords on the switchboard. The role of the switchboard and operator was important because they were responsible for connecting callers with the correct party and ensuring that calls were completed correctly.

  3. Telephone switchboard - Wikipedia

    en.wikipedia.org/wiki/Telephone_switchboard

    PBX switchboard, 1975. A telephone switchboard is a device used to connect circuits of telephones to establish telephone calls between users or other switchboards. The switchboard is an essential component of a manual telephone exchange, and is operated by switchboard operators who use electrical cords or switches to establish the connections.

  4. Business telephone system - Wikipedia

    en.wikipedia.org/wiki/Business_telephone_system

    A PBX is a telephone exchange or switching system that serves a private organization. A PBX permits the sharing of central office trunks between internally installed telephones, and provides intercommunication between those internal telephones within the organization without the use of external lines. [7]

  5. Automated attendant - Wikipedia

    en.wikipedia.org/wiki/Automated_attendant

    While persons within an enterprise served by a PBX can call each other by dialing their extension numbers, incoming calls, i.e., calls originating from a telephone not served by the PBX but intended for a party served by the PBX, required assistance from a switchboard operator (also called a "switchboard attendant") or a telephone service ...

  6. Telephone exchange - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange

    For corporate or enterprise applications, a private telephone exchange is termed a private branch exchange (PBX), which connects to the public switched telephone network. A PBX serves an organization's telephones and any private leased line circuits, typically situated in large office spaces or organizational campuses.

  7. Automatic call distributor - Wikipedia

    en.wikipedia.org/wiki/Automatic_call_distributor

    A Private Branch Exchange (PBX) is a telephone exchange device that acts as a switchboard to route phone calls within an organisation. This technology developed into Automated Call Distribution systems using computer technology to automatically connect incoming calls to recipients based on programmable logic.

  8. Direct inward dial - Wikipedia

    en.wikipedia.org/wiki/Direct_inward_dial

    The PBX may use this information to route the call directly to a telephone extension within the organization without the need for an operator or attendant. The service provides inbound telephone service for many telephone numbers, often requiring far fewer physical telecommunication circuits to satisfy the demand for concurrent usage than the ...

  9. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    Call originator - (or calling party, caller or A-party) a person or device that initiates a telephone call by dialling a telephone number.; Call waiting - a system that notifies a caller of another incoming telephone call by sounding a sound in the earpiece.