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  2. Lineman's handset - Wikipedia

    en.wikipedia.org/wiki/Lineman's_handset

    A lineman's handset is a special type of telephone used by technicians for installing and testing local loop telephone lines. It is also called a test set , butt set , or buttinski . [ 1 ]

  3. Plant test number - Wikipedia

    en.wikipedia.org/wiki/Plant_test_number

    In telecommunications, a plant test number is a telephone number reserved for use by telephone installers or other workers to test an individual telephone line. Test numbers are typically unlisted. The North American Numbering Plan (NANP) reserves the exchange (central office) prefixes 958 and 959 for plant testing. [1]

  4. Automatic number announcement circuit - Wikipedia

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

    By connecting a test telephone set, a technician calls the local telephone number of the automatic number announcement service. This call is connected to equipment at the central office that uses automatic equipment to announce the telephone number of the line calling in. The main purpose of this system is to allow telephone company technicians ...

  5. Loop around - Wikipedia

    en.wikipedia.org/wiki/Loop_around

    A loop line or loop around is a telephone company test circuit. The circuit has two associated phone numbers. When one side of the loop is called (side A), the caller receives a test tone of approximately 1000 Hz (milliwatt test). When the second number (side B) is called, it produces dead silence, but the party on side A hears the milliwatt ...

  6. Ringback number - Wikipedia

    en.wikipedia.org/wiki/Ringback_number

    The test consists of calling a reverting calling telephone number (ringback number) or a vertical service code with a standard telephone. Upon answering the call, the exchange plays a unique signal tone as a signal for the installer to hangup the telephone. The exchange then places a reverting call to the originating line, causing the telephone ...

  7. National wireless phone alert test coming Oct. 4. - AOL

    www.aol.com/national-wireless-phone-alert-test...

    National wireless phone alert test coming Oct. 4. The Herald-Mail. Julie E. Greene, The Herald-Mail. October 3, 2023 at 12:00 PM. ... The backup testing date is Oct. 11. Reasons for a possible ...

  8. Loop maintenance operations system - Wikipedia

    en.wikipedia.org/wiki/Loop_Maintenance...

    The Loop Maintenance Operations System (LMOS) is a telephone company trouble ticketing system to coordinate repairs of local loops (telephone lines). When a problem is reported by a subscriber, it is filed and relayed through the Cross Front End, which is a link from the CRSAB (Centralized Repair Service Answering Bureau) to the LMOS network. [1]

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