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  2. Direct inward dial - Wikipedia

    en.wikipedia.org/wiki/Direct_inward_dial

    A telephone line is terminated at a telephone interface (fax modem) of a computer that runs fax server software. A set of digits of the assigned phone number is used to identify the recipient of the fax. This allows many recipients to have individual fax numbers while sharing only a few receiving interfaces (fax modems).

  3. Telephone number mapping - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_mapping

    Telephone number mapping is a system of unifying the international telephone number system of the public switched telephone network with the Internet addressing and identification name spaces. Internationally, telephone numbers are systematically organized by the E.164 standard, while the Internet uses the Domain Name System (DNS) for linking ...

  4. Virtual number - Wikipedia

    en.wikipedia.org/wiki/Virtual_number

    A virtual number, also known as direct inward dialing (DID) or access numbers, is a telephone number without a directly associated telephone line. Usually, these numbers are programmed to forward incoming calls to one of the pre-set telephone numbers, chosen by the client: fixed, mobile or VoIP. A virtual number can work like a gateway between ...

  5. Telephone number - Wikipedia

    en.wikipedia.org/wiki/Telephone_number

    A telephone number is a sequence of digits assigned to a landline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN), or other public and private networks.

  6. Find and remove unusual activity on your AOL account

    help.aol.com/articles/find-and-remove-unusual...

    Click any recent activity entry to view its IP address as well as the date and time it was collected. If one is drastically different from the others, remove it and change your password. Be aware that there are some legitimate reasons why your history can show unfamiliar locations, such as your mobile device detecting the wrong location or ...

  7. Voice over IP - Wikipedia

    en.wikipedia.org/wiki/Voice_over_IP

    A telephone connected to a land line has a direct relationship between a telephone number and a physical location, which is maintained by the telephone company and available to emergency responders via the national emergency response service centers in form of emergency subscriber lists. When an emergency call is received by a center the ...

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