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  2. List of telephony terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_telephony_terminology

    Direct Dial Central Office (Opposite of DID) US DDD: Direct Distance Dialing: US DDI: Direct Dialing In: UK DECT: Digital Enhanced Cordless Telecommunications DID: Direct Inward Dialing: US DMS: Digital Multiplex System (e.g. DMS-100) Can DNIS: Dialed Number Identification System: US DSL: Digital subscriber line DTMF: dual-tone multi-frequency FDM

  3. 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.

  4. 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).

  5. Biz Brief: DirecTV Customer Service Lines Flooded After Glitch

    www.aol.com/news/2010-06-08-directv-customer...

    DirecTV (DTV) customers who were planning to kick back on the couch to go channel surfing Tuesday morning were in for a rude awakening. A mysterious glitch caused high-definition recorders to get ...

  6. Dialed Number Identification Service - Wikipedia

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

    Direct inward dial (DID) service also provides DNIS. For example, a company may have a different toll-free telephone number for each product line it sells, or for multilingual customer support . If a call center is handling calls for multiple product lines, the corporate telephone system that receives the call analyzes the DNIS signaling and ...

  7. PSTN network topology - Wikipedia

    en.wikipedia.org/wiki/PSTN_network_topology

    PSTN network topology is the switching network topology of a telephone network connected to the public switched telephone network (PSTN).. In the United States and Canada, the Bell System network topology was the switching system hierarchy implemented and operated from c. 1930 to the 1980s for the purpose of integrating the diverse array of local telephone companies and telephone numbering ...

  8. 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.

  9. What 'secret' loudspeaker codes mean at department stores - AOL

    www.aol.com/news/2010-10-13-what-secret...

    This "code" is one of many innocuous sounding secret codes that. If you've been shopping in a big box retail store you've probably heard an announcement on the loudspeaker such as, "code yellow ...

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