call progress tone

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• Call-progress tone — In telephony, call progress tones are audible tones sent from the PSTN or a PBX to calling parties to indicate the status of phone calls. Equipment such as fax machines and modems are designed to recognise dial tones and busy tones.The ITU T… …   Wikipedia

• Precise Tone Plan — The Precise Tone Plan specification for the North American network defines the Call progress tones used for standard signaling in the PSTN. The tones are as follows:* dial tone is a continuous tone having frequencies of 350 and 440 Hz at a level… …   Wikipedia

• Dial tone — For the G.I. Joe character, see Dial Tone (G.I. Joe). A dial tone (known in the British Isles as a dialling tone)[1] is a telephony signal used to indicate that the telephone exchange is working, has recognized an off hook, and is ready to accept …   Wikipedia

• North American Precise Tone Plan —    (NAPTP)    The standard method of registering call progress tones …   IT glossary of terms, acronyms and abbreviations

• Controversies surrounding Call of Duty: Modern Warfare 2 — Call of Duty: Modern Warfare 2 is a first person shooter video game released for the Xbox 360, PlayStation 3, and Microsoft Windows on November 10, 2009. In addition to being a critically acclaimed best seller, the game has garnered much… …   Wikipedia

• Telephone call — A telephone call is a connection over a telephone network between the calling party and the called party. Information transmissionA telephone call may carry ordinary voice transmission using a telephone, data transmission when the calling party… …   Wikipedia

• Prank call — A prank call (also known as a prank phone call or crank call) is a form of practical joke committed over the telephone. Prank phone calls began to gain an America wide following over a period of many years, as they gradually became a staple of… …   Wikipedia

• Plain old telephone service — (POTS) is the voice grade telephone service that remains the basic form of residential and small business service connection to the telephone network in most parts of the world. The name is a reflection of the telephone service still available… …   Wikipedia

• тональный сигнал прохождения соединения — (МСЭ Т Y.1452). [http://www.iks media.ru/glossary/index.html?glossid=2400324] Тематики электросвязь, основные понятия EN call progress toneCPT …   Справочник технического переводчика

• Telephone exchange — A telephone operator manually connecting calls with cord pairs at a telephone switchboard. In the field of telecommunications, a telephone exchange or telephone switch is a system of electronic components that connects telephone calls. A central… …   Wikipedia

• Disconnect supervision — is a term in telephony describing signaling between the telephone exchange and a connected party used to indicate that the connected call is being disconnected. For example the called party may indicate to the telephone exchange that the call is… …   Wikipedia