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  2. 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 ...

  3. Telephone number verification - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_verification

    Telephone number verification (or validation) services are online services used to establish whether a given telephone number is in service. They may include a form of Turing test to further determine if a human answers or answering equipment such as a modem, fax, voice mail or answering machine.

  4. 555 (telephone number) - Wikipedia

    en.wikipedia.org/wiki/555_(telephone_number)

    The 555 exchange is not reserved in area codes used for toll-free phone numbers. This led to the video game The Last of Us accidentally including the number to a phone-sex operator. [9] The number "555-2368" (or 311-555-2368) is a carryover from the "EXchange 2368" ("Exchange CENTral") number common in telephone advertisements as early as the ...

  5. Ringback number - Wikipedia

    en.wikipedia.org/wiki/Ringback_number

    Most other numbers listed for ringback are specific to one exchange or one telco; available lists tend to be outdated and unreliable. Many former test numbers (such as 320 and 999 in Bell Canada territory) have been reclaimed for use as standard landline or mobile exchange prefixes, with the test codes moved (usually) to the 958 exchange.

  6. Telephone numbers in Germany - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Germany

    Numbers starting with 198 and 199 are reserved for routing of service numbers and network-internal use. 31-x; The numbers 31-0 and 31-1 are test numbers that reach a recorded announcement indicating the selected carrier for long-distance and local calls, respectively. 32-xxxxxxxxx; National subscriber numbers have been allocated the area code 32.

  7. Fax - Wikipedia

    en.wikipedia.org/wiki/Fax

    Fax (short for facsimile), sometimes called telecopying or telefax (short for telefacsimile), is the telephonic transmission of scanned printed material (both text and images), normally to a telephone number connected to a printer or other output device.

  8. Hewlett-Packard - Wikipedia

    en.wikipedia.org/wiki/Hewlett-Packard

    On December 31, 2013, HP revised the number of jobs cut from 29,000 to 34,000 up to October 2014. The number of jobs cut until the end of 2013 was 24,600. [95] [96] [97] At the end of 2013 the company had 317,500 employees. On May 22, 2014, HP announced it would cut a further 11,000 to 16,000 jobs, in addition to the 34,000 announced in 2013.

  9. Telephone numbers in Hong Kong - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Hong_Kong

    Numbers starting with '3' were introduced when '2' for fixed lines started running out. Cell phone numbers remain eight-digit. The number '6' started to be used when numbers started with '9' were running out. In May 2008, cellular phone numbers with '5' as the beginning were also introduced.