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Vertical service code

Index Vertical service code

A vertical service code (VSC) is a sequence of digits and the signals star (*) and number sign (#) dialed on a telephone keypad or rotary dial to enable or disable certain telephony service features. [1]

28 relations: *82, Anonymous call rejection, Asterisk, AT&T Corporation, Call blocking, Call forwarding, Call waiting, Caller ID, Continuous redial, Dual-tone multi-frequency signaling, Landline, Last-call return, Mobile dial code, Mobile phone, North America, North American Numbering Plan, Number sign, Pat Fleet, Priority call, Public switched telephone network, Rotary dial, Short code, Signalling System No. 7, Speed calling, Telephone exchange, Telephone keypad, Telephone number, Telephony.

*82

This Vertical Service Code, *82, enables calling line identification regardless of subscriber preference, dialed to unblock withheld numbers (private callers) in the U.S. on a per-call basis.

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Anonymous call rejection

In North American NANP telephone system, anonymous call rejection (ACR) is a landline calling feature that screens out calls from callers who have blocked their caller ID information.

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Asterisk

An asterisk (*); from Late Latin asteriscus, from Ancient Greek ἀστερίσκος, asteriskos, "little star") is a typographical symbol or glyph. It is so called because it resembles a conventional image of a star. Computer scientists and mathematicians often vocalize it as star (as, for example, in the A* search algorithm or C*-algebra). In English, an asterisk is usually five-pointed in sans-serif typefaces, six-pointed in serif typefaces, and six- or eight-pointed when handwritten. It is often used to censor offensive words, and on the Internet, to indicate a correction to a previous message. The asterisk is derived from the need of the printers of family trees in feudal times for a symbol to indicate date of birth. The original shape was seven-armed, each arm like a teardrop shooting from the center. In computer science, the asterisk is commonly used as a wildcard character, or to denote pointers, repetition, or multiplication.

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AT&T Corporation

AT&T Corp., originally the American Telephone and Telegraph Company, is the subsidiary of AT&T that provides voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.

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Call blocking

Call blocking, also known as call block, call screening, or call rejection, allows a telephone subscriber to block incoming calls from specific telephone numbers.

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Call forwarding

Call forwarding, or call diversion, is a telephony feature of some telephone switching systems which redirects a telephone call to another destination, which may be, for example, a mobile or another telephone number where the desired called party is available.

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Call waiting

Call waiting is a telecommunication service offered by a telephone service provider to a subscriber by which the subscriber may suspend a telephone call already in progress to accept a second call.

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Caller ID

Caller ID (caller identification, CID), also called calling line identification (CLID), Calling Line Identification (CLI), calling number delivery (CND), calling number identification (CNID), calling line identification presentation (CLIP), or call display, is a telephone service, available in analog and digital telephone systems, including VoIP, that transmits a caller's telephone number to the called party's telephone equipment when the call is being set up.

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Continuous redial

Continuous redial, busy number redial, or repeat dial, is a vertical service code (calling feature) that allows callers to automatically redial a busy telephone number until a connection is made.

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Dual-tone multi-frequency signaling

Dual-tone multi-frequency signaling (DTMF) is an in-band telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers.

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Landline

A landline telephone (also known as land line, land-line, main line, home phone, landline, fixed-line, and wireline) is a phone that uses a metal wire or optical fiber telephone line for transmission as distinguished from a mobile cellular line, which uses radio waves for transmission.

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Last-call return

Last-call return, automatic recall, or (on PBX and centrex service) camp-on, is a telecommunication feature offered by telephony service providers to subscribers to provide the subscriber with the telephone number, and sometimes the time, of the last caller.

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Mobile dial code

A mobile dial code (MDC) is a phone number that allows the request and receipt of information directly to a mobile phone.

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Mobile phone

A mobile phone, known as a cell phone in North America, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.

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North America

North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere; it is also considered by some to be a northern subcontinent of the Americas.

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North American Numbering Plan

The North American Numbering Plan (NANP) is a telephone numbering plan that encompasses 25 distinct regions in twenty countries primarily in North America, including the Caribbean and the U.S. territories.

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Number sign

The symbol # is most commonly known as the number sign, hash, or pound sign.

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Pat Fleet

Pat Trumble Fleet is a working American voice actress known as the registered voice of AT&T.

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Priority call

A priority call is a telephone call that has been assigned some enhanced level of priority for processing by a telecommunications network such that it may be expected to achieve precedence over other traffic.

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Public switched telephone network

The public switched telephone network (PSTN) is the aggregate of the world's circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.

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Rotary dial

A rotary dial is a component of a telephone or a telephone switchboard that implements a signaling technology in telecommunications known as pulse dialing.

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Short code

Short codes, or short numbers, are short digit sequences, significantly shorter than telephone numbers, that are used to address messages in the Multimedia Messaging System (MMS) and short message service (SMS) systems of mobile network operators.

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Signalling System No. 7

Signaling System No.

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Speed calling

Speed calling service allows telephone subscribers to assign one or two digit speed calling codes, by dialing a change speed calling list access code, a feature code, and a new telephone number.

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Telephone exchange

A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises.

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Telephone keypad

A telephone keypad is the keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number.

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Telephone number

A telephone number is a sequence of digits assigned to a fixed-line 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 private networks.

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Telephony

Telephony is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties.

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Redirects here:

*30, *31, *32, *51, *52, *53, *54, *62, *67, *68, *71, Automatic Forwarding, CLASS-based calling, Call Screen, Calling feature, Cancel forwarding, Computer Access Restriction, Custom Local Area Signaling Services, Custom local area signaling service, Customer Originated Trace, Extension Hold, Feature access code, ICLID Activation, Intercom Ring, Local Area Signaling Services, No Answer Call Transfer, Notify, Number Display Blocking, Number Display Unblocking, Select. Forwarding, Selective Call Acceptance, Selective Call Forwarding, Selective Call Rejection, Selective Distinct, Selective Distinct Alert, Service feature, Star code, Star codes, Telephone feature code, Usage Sensitive 3 way call, Vertical Service Code, Vertical Service Codes, Vertical service codes.

References

[1] https://en.wikipedia.org/wiki/Vertical_service_code

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