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  2. 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 ...

  3. 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).

  4. Caller ID - Wikipedia

    en.wikipedia.org/wiki/Caller_ID

    Caller-ID system response sounds in various cases: analog, ISDN and digital PBX Caller identification (Caller ID) is a telephone service, available in analog and digital telephone systems, including voice over IP (VoIP), that transmits a caller's telephone number to the called party's telephone equipment when the call is being set up.

  5. How To Find Your IP Address, And Why You Should Know It in ...

    www.aol.com/ip-address-why-know-first-211700667.html

    In that receptionist scenario, everyone can find the company’s phone number—the external IP address in this case. That said, if you want to keep your external IP address private, ...

  6. 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 ...

  7. Dialed Number Identification Service - Wikipedia

    en.wikipedia.org/wiki/Dialed_Number...

    Dialed Number Identification Service (DNIS) is a service offered by telecommunications companies to corporate clients which identifies the originally dialed telephone number of an inbound call. The client may use this information for call routing to internal destinations or activation of special call handling.