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  2. Google Voice - Wikipedia

    en.wikipedia.org/wiki/Google_Voice

    Google Voice is a telephone service that provides a U.S. phone number to Google Account customers [4] in the U.S. and Google Workspace (G Suite by October 2020 [5]) customers in Canada, Denmark, France, the Netherlands, Portugal, Spain, Sweden, Switzerland, the United Kingdom and the contiguous United States. [6]

  3. GOOG-411 - Wikipedia

    en.wikipedia.org/wiki/GOOG-411

    GOOG-411 (or Google Voice Local Search) was a telephone service launched by Google in 2007, that provided a speech-recognition-based business directory search, and placed a call to the resulting number in the United States or Canada. [1] The service was accessible via a toll-free telephone number.

  4. Local number portability - Wikipedia

    en.wikipedia.org/wiki/Local_number_portability

    Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange carrier (LEC) to reassign the number to another carrier ("service provider portability"), move it to another location ("geographic portability"), or ...

  5. Mobile number portability - Wikipedia

    en.wikipedia.org/wiki/Mobile_number_portability

    The service is handled by Pakistan MNP Database (Guarantee) Limited, [45] the joint venture of all the cellular companies of Pakistan. Number Portability Clearinghouse service is handled by iconectiv. Philippines: 2021.09.30 2 Free [46] Singapore: 2008.06.13 1 Free Customers are not able to port between prepaid and postpaid options.

  6. Porting Authorisation Code - Wikipedia

    en.wikipedia.org/wiki/Porting_Authorisation_Code

    Porting Authorization Code (PAC) is a unique identifier (normally 9 characters long and in the format "ABC123456") used by some mobile network operators to facilitate mobile number portability (MNP). This allows users to retain their mobile telephone number when switching operators.

  7. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    The broader terms Internet telephony, broadband telephony, and broadband phone service specifically refer to the delivery of voice and other communication services, such as fax, SMS, and voice messaging, over the Internet, in contrast to the traditional public switched telephone network (PSTN), commonly known as plain old telephone service (POTS).

  8. Google Fi Wireless - Wikipedia

    en.wikipedia.org/wiki/Google_Fi_Wireless

    Google Fi Wireless (pronounced / f aɪ /), formerly Project Fi and Google Fi, is an American MVNO telecommunications service by Google that provides telephone calls, SMS, and mobile broadband using cellular networks and Wi-Fi. Google Fi uses the T-Mobile network. Google Fi is a service for US residents only, as of late 2023. [1]

  9. FXO and FXS - Wikipedia

    en.wikipedia.org/wiki/FXO_and_FXS

    A similar "FCO" service provided no difference in local calling area (the distant exchange is in the same rate centre). Historically, it was a means to obtain features not available on the local exchange (such as DTMF tone dialling when first introduced in 1963) [ 7 ] or keep an existing business telephone number operational after a cross-town ...