progress tone
1Call-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… …
2Tone (linguistics) — Not to be confused with intonation (linguistics). Top tone ◌̋ ˥ …
3Precise 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… …
4Dial 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 …
5The Pilgrim's Progress — For the Kula Shaker album, see Pilgrims Progress (album). The Pilgrim s Progress   …
6The Tone Rebellion — Infobox VG title = The Tone Rebellion developer = The Logic Factory publisher = Virgin Interactive Entertainment designer = engine = released = 1997 genre = Real time strategy (4X) modes = Single player, Multiplayer ratings = ESRB: Kids to Adults …
7Turbo Tu-Tone — (Real name: Ted Stavely, Voiced by Dan Henessey) is a cartoon character in the C.O.P.S. (Central Organization of Police Specialists) series from Hasbro which ran from 1988 1989.Character profileTurbo Tu Tone (only Turbo in Brazilian version) is… …
8An Outpost of Progress — is a short story written in July 1896 by Joseph Conrad, drawing on his own experience at Congo. It was published in the magazine Cosmopolis in 1897 and was later collected in Tales of Unrest in 1898. Often compared with Heart of Darkness , Conrad …
9North American Precise Tone Plan — (NAPTP) The standard method of registering call progress tones …
10Plain 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… …
