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2. Ringback number - Wikipedia

   en.wikipedia.org/wiki/Ringback_number

   Ringback number. A ringback number is a telephone number for a telephone line that automatically calls the line that the call was placed from, after the caller has hung up. The typical use of this facility is by telephone company technicians for testing a new installation or for trouble-shooting. [1]

3. Ringing tone - Wikipedia

   en.wikipedia.org/wiki/Ringing_tone

   Ringing tone (audible ringing, also ringback tone) is a signaling tone in telecommunication that is heard by the originator of a telephone call while the destination terminal is alerting the receiving party. The tone is typically a repeated cadence similar to a traditional power ringing signal (ringtone), but is usually not played synchronously ...

4. Call-progress tone - Wikipedia

   en.wikipedia.org/wiki/Call-progress_tone

   Call-progress tone. In telephony, call progress tones are audible tones that provide an indication of the status of a telephone call to the user. The tones are generated by a central office or a private branch exchange (PBX) to the calling party. Telecommunication equipment such as fax machines and modems are designed to recognize certain tones ...

5. Intercept message - Wikipedia

   en.wikipedia.org/wiki/Intercept_message

   Intercept message. An intercept message is a telephone recording informing the caller that the call cannot be completed, for any of a number of reasons ranging from local congestion, to disconnection of the destination phone, number dial errors or network trouble along the route.

6. Special information tone - Wikipedia

   en.wikipedia.org/wiki/Special_information_tone

   Special information tone. In telephony, a special information tone (SIT) is an in-band international standard call progress tone consisting of three rising tones indicating a call has failed. It usually precedes a recorded announcement describing the problem. [1][2]

7. Blue box - Wikipedia

   en.wikipedia.org/wiki/Blue_box

   Blue box designed and built by Steve Wozniak and sold by Steve Jobs before they founded Apple. Displayed at the Powerhouse Museum, from the collection of the Computer History Museum [1] A blue box is an electronic device that produces tones used to generate the in-band signaling tones formerly used within the North American long-distance ...

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. On a touch tone telephone, the codes are usually initiated with ...

9. Cowboys have troubling soft spots 3 weeks into NFL season ...

   www.aol.com/sports/cowboys-troubling-soft-spots...

   For premium support please call: 800-290-4726 more ways to reach us. Mail. ... then heading back to the friendly confines of AT&T Stadium for Weeks 2 and 3. ... lamenting in a disgusted tone ...