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See media help. A busy signal (or busy tone or engaged tone) in telephony is an audible call-progress tone or audible signal to the calling party that indicates failure to complete the requested connection of that particular telephone call. The busy signal has become less common in the past few decades due to the prevalence of call waiting and ...
The reorder tone, also known as the fast busy tone, or the congestion tone, or all trunks busy (ATB) tone is an audible call progress tone in the public switched telephone network (PSTN) that is returned to a calling party to indicate that the call cannot be processed through the network.
1. Check phone line for dial tone, and line quality. 2, Redial. 3. Select a different access number(s). Access Numbers work better with certain modems.
Beep line. In telephony, beep lines[ a] were improvised conference calls hosted over busy signals, loop-around test tones, or certain automated informational service numbers, active in the United States from the mid-1950s to the mid-1980s. [ 5][ 6][ 7][ 1][ 3] These lines allowed callers to communicate with up to dozens of other people ...
If the far end is busy, the caller gets a busy signal without consuming a voice channel. Since 1975, CCS protocols have been developed by major telephone companies and the International Telecommunication Union Telecommunication Standardization Sector (ITU-T); in 1977 the ITU-T defined the first international CCS protocol as Signaling System No ...
Passport applicants who wish to do a renewal online must meet the following criteria, per the State Department:-- Be U.S. citizens and residents ages 25 and older who have already had an existing ...
486 Busy Here Callee is busy. [1]: §21.4.24 487 Request Terminated Request has terminated by bye or cancel. [1]: §21.4.25 488 Not Acceptable Here Some aspect of the session description or the Request-URI is not acceptable. [1]: §21.4.26 489 Bad Event The server did not understand an event package specified in an Event header field.
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