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  2. Vertical service code - Wikipedia

    en.wikipedia.org/wiki/Vertical_service_code

    Permits the call to be picked up at another station. *53 1153 Distinctive Ring B. Allows a subscriber to alert a specific party distinctively. *54 1154 Distinctive Ring C. Allows a subscriber to alert a specific party distinctively. *57 1157 Call trace (Malicious caller identification) *60 1160 Call blocking *61 1161 Priority call *62 1162

  3. Call blocking - Wikipedia

    en.wikipedia.org/wiki/Call_blocking

    [1] [2] Such devices and services enable the user to block a call as it is in progress or alternatively block the number after the call is made. These devices rely on caller ID information and thus a phone blocker requires a caller ID service active on the line for blocking to function. Treatment of blocked calls may include: Sending the caller ...

  4. Malicious caller identification - Wikipedia

    en.wikipedia.org/wiki/Malicious_caller...

    Malicious caller identification, introduced in 1992 as Call Trace, [1] also called malicious call trace or caller-activated malicious call trace, is activated by the vertical service code *57 ("star fifty-seven"), and is an upcharge fee subscription service offered by telephone company providers which, when dialed immediately after a malicious call, records metadata for police follow-up.

  5. Automatic number identification - Wikipedia

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

    Automatic number identification (ANI) [1] [2] is a feature of a telecommunications network for automatically determining the origination telephone number on toll calls for billing purposes. Automatic number identification was originally created by the American Telephone and Telegraph Company (AT&T) for long distance service in the Bell System ...

  6. The call and text message records of hundreds of millions of AT&T cellphone customers in mid-to-late 2022 were exposed in a massive data breach, the telecom company revealed Friday.

  7. Caller ID - Wikipedia

    en.wikipedia.org/wiki/Caller_ID

    Where blocking is applied on a call-by-call basis (that is, at the time a call is made), subscribers can block their caller ID by dialing a special code (a vertical service code, or VSC) before making a call. In North America and some other regions, [which?] the code is *67 (1167 on rotary phones), while in the United Kingdom and Ireland, it is ...

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  9. Blocked call - Wikipedia

    en.wikipedia.org/wiki/Blocked_call

    Call blocking; Blocking probability This page was last edited on 27 January 2021, at 12:10 (UTC). Text is available under the Creative Commons ... Code of Conduct;