enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Ringing (telephony) - Wikipedia

   en.wikipedia.org/wiki/Ringing_(telephony)

   Ringing (telephony) Ringing is a telecommunication signal that causes a bell or other device to alert a telephone subscriber to an incoming telephone call. Historically, this entailed sending a high-voltage alternating current over the telephone line to a customer station which contained an electromagnetic bell.

3. Ringer equivalence number - Wikipedia

   en.wikipedia.org/wiki/Ringer_equivalence_number

   The ringer equivalence number (REN) is a telecommunications measure that represents the electrical loading effect of a telephone ringer on a telephone line.In the United States, ringer equivalence was first defined by U.S. Code of Federal Regulations, Title 47, Part 68, based on the load that a standard Bell System model 500 telephone represented, and was later determined in accordance with ...

4. History of the telephone - Wikipedia

   en.wikipedia.org/wiki/History_of_the_telephone

   Alexander Graham Bell was awarded the first U.S. patent for the invention of the telephone in 1876. Elisha Gray, 1876, designed a telephone using a water microphone in Highland Park, Illinois. Tivadar Puskás proposed the telephone switchboard exchange in 1876. Thomas Edison invented the carbon microphone which produced a strong telephone ...

5. 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.

6. Telephone - Wikipedia

   en.wikipedia.org/wiki/Telephone

   An old rotary dial telephone. AT&T push button telephone made by Western Electric, model 2500 DMG black, 1980. A telephone, colloquially referred to as a phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be easily heard directly. A telephone converts sound, typically ...

7. Thomas A. Watson - Wikipedia

   en.wikipedia.org/wiki/Thomas_A._Watson

   After the creation of the telephone itself, Watson invented many accessories for it. Most important was the ringer, which would alert someone not standing by the telephone that a call was being placed. The first version involved a hammer, which had to hit the diaphragm; [5] this was followed by a version employing a buzzer. [6]

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. 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 ...