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  2. Telephone number - Wikipedia

    For example, a telephone number in North America consists of a three-digit area code, a three-digit central office code, and four digits for the line number. If the numbering plan area does not use an overlay plan with multiple area codes, or if the provider allows it for other technical reasons, seven-digit dialing may be permissible for calls ...

  3. Telephone keypad - Wikipedia

    A telephone keypad is a keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number.It was standardized when the dual-tone multi-frequency signaling (DTMF) system was developed in the Bell System in the United States in the 1960s that replaced rotary dialing originally developed in electromechanical switching systems.

  4. Mobile phone spam - Wikipedia

    In the US, the Federal Trade Commission (FTC) has expanded Phone Spam regulations to cover also Voice Spam—mostly in form of prerecorded telemarketing calls—commonly known as robocalls; victims can file a complaint with the FCC. In California, Section 17538.41 of the B&P Code bans text message advertisement.

  5. Incorporation (business) - Wikipedia

    There are a number of legal benefits that come with incorporation. One significant legal benefit is the protection of personal assets against the claims of creditors and lawsuits. Sole proprietors and general partners in a partnership are personally and jointly responsible for all the legal liability (LL) of a business such as loans, accounts ...

  6. Googleplex - Wikipedia

    "Googleplex" is a portmanteau of Google and complex (meaning a complex of buildings) and a reference to googolplex, the name given to the large number 10 (10 100), or 10 googol Contents 1 Facilities and history

  7. Automatic number announcement circuit - Wikipedia

    This service announces the line number on all Eir lines, including lines where calls are carried by another provider using carrier preselect. The same number also works for lines provided by local-loop unbundling. The number is called out without the leading 0. For example, 021 XXX XXXX is read back as "21 XXX XXXX".

  8. Toll-free telephone number - Wikipedia

    As one example, a taxi company could rent shared use of 1‑800‑TAXICAB in one city. The number belongs to a company in Van Nuys, California, but is redirected to local cab companies on a city-by-city basis and promoted by being printed on everything from individual taxi cab hub caps to campaigns against drunk driving.

  9. 3-1-1 - Wikipedia

    History. The first use of 3-1-1 for informational services was in Baltimore, Maryland, where the service commenced on 2 October 1996. 3-1-1 is intended to connect callers to a call center that can be the same as the 9-1-1 call center, but with 3-1-1 calls assigned a secondary priority, answered only when no 9-1-1 calls are waiting.