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  2. 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.

  3. Line information database - Wikipedia

    en.wikipedia.org/wiki/Line_Information_DataBase

    Wholesale rates for the fee are on the order of $200 to $600 per 100,000 lookups. [4] Per carrier policy, the name of a person or business may be automatically added to the Line Information Database and the customer must opt-out to remain anonymous. Other carriers exclude identity information by rule, and require the subscriber to opt-in.

  4. *82 - Wikipedia

    en.wikipedia.org/wiki/*82

    If Caller ID is subscribed to or enabled on the line receiving the call, the unblocked phone number and registered name is displayed – unable to determine that the caller subscribes to outgoing callerID blocking or that *82 has been dialed to temporarily override that subscription. *82 can be dialed from U.S. land-line house phones and ...

  5. Bell 202 - Wikipedia

    en.wikipedia.org/wiki/Bell_202_modem

    In North America, Bell 202 AFSK modulation is used to transmit Caller ID information over POTS lines in the public telephone network. It is also employed in some commercial settings. A single chip implementation of the Bell 202 protocol, c. 2007.

  6. Automatic number identification - Wikipedia

    en.wikipedia.org/wiki/Automatic_number...

    Modern toll-free telephone numbers, which generate itemized billing of all calls received instead of relying on the special fixed-rate trunks of the Bell System's original Inward WATS service, depend on ANI to track inbound calls to numbers in special area codes such as +1-800, 888, 877, 866, 855, 844, and 833 with 822 reserved for future toll free use (United States and Canada), 1800 ...

  7. Phone fraud - Wikipedia

    en.wikipedia.org/wiki/Phone_fraud

    Caller name display (CNAM) is vulnerable to data mining, where a dishonest user obtains a line (fixed or mobile) with caller name display and then calls that number repeatedly from an autodialer which uses caller ID spoofing to send a different presentation number on each call. None of the calls are actually answered, but the telephone company ...