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  2. Direct response television - Wikipedia

    en.wikipedia.org/wiki/Direct_response_television

    Direct response television (DRTV) is any television advertising that asks consumers to respond directly to the company — usually either by calling a toll-free telephone number, sending an SMS message, or by visiting a web site. This is a form of direct response marketing. There are two types of direct response television, short form, and long ...

  3. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    Call originator - (or calling party, caller or A-party) a person or device that initiates a telephone call by dialling a telephone number. Call waiting - a system that notifies a caller of another incoming telephone call by sounding a sound in the earpiece. Called party - (or callee or B-party) Caller; Calling party; Conference call (multi ...

  4. Vertical service code - Wikipedia

    en.wikipedia.org/wiki/Vertical_service_code

    A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence.

  5. Telephony - Wikipedia

    en.wikipedia.org/wiki/Telephony

    Telephony (/ t ə ˈ l ɛ f ə n i / tə-LEF-ə-nee) is the field of technology involving the development, application, and deployment of telecommunications services for the purpose of electronic transmission of voice, fax, or data, between distant parties.

  6. Direct distance dialing - Wikipedia

    en.wikipedia.org/wiki/Direct_Distance_Dialing

    The first direct-dialed long-distance telephone calls were possible in the New Jersey communities of Englewood and Teaneck.Customers of the ENglewood 3, ENglewood 4 and TEaneck 7 exchanges, who could already dial telephone numbers in the New York City area, could place calls to eleven major cities across the United States by dialing the three-digit area code and the seven-digit directory number.

  7. Telecommunications relay service - Wikipedia

    en.wikipedia.org/wiki/Telecommunications_relay...

    Captioned telephone is a hybrid communication method that enables people who are hard of hearing, oral deaf or late–deafened to speak directly to another party on a telephone call. [5] Typically, a telephone that displays real-time captions of what the hearing party speaks during a conversation. The captions are displayed on a screen embedded ...

  8. Telephone - Wikipedia

    en.wikipedia.org/wiki/Telephone

    A sound-powered telephone is a telephone which transmits voice communication by wire, powered by the energy of the sound waves of the operator speaking. Principle of operation A moving-coil microphone converts the sound waves into an electrical signal, which is then converted back into sound waves at the receiver's end.

  9. Short code - Wikipedia

    en.wikipedia.org/wiki/Short_code

    Short codes are five digits in length and have to start with the digit '5'. The five digits can be extended by three digits further representing three additional characters. Texts sent to these Short Codes are commonly referred to as Premium Rate SMS Messages and cost around Rs 1 to Rs 3 per text depending on the operator as well as the service ...