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Certain conditions or dialing options may affect the quality of your connection with the Dialer. One common cause occurs when a call waiting is active but has not been disabled. If you’re a call waiting subscriber, start with Step 1 below. If your telephone service does not have call waiting, skip to Step 2.
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 voicemail.
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.
In many cases, when calling from abroad, busy, reorder and other call failure tones may be played by the local switch. Modern signalling protocols like SS7 send this information digitally; thus only a ringback tone or announcement generated by a distant switch in a foreign network will ever be heard by callers from other countries or networks.
No matter which iPhone you use, you’ll invariably deal with a bad or no signal at some point. Kim Komando offers 5 ways to boost signal strength.
Call completion is a telephony feature allowing some form of alternative interaction between parties who cannot converse directly with each other. There are several possible factors which can prevent a telephone call from connecting successfully: Called party does not answer; Called party is busy in another call; Called party is off-line or ...
Busy override is a function of the private branch exchange that allows the calling party to override the busy signal on the called party to break into the ongoing conversation. Before breaking in most PBX announce the incoming call by a distinctive sound signal or tone , but in most cases this can be disabled by software.
Like a dial tone or busy signal, the SIT is an in-band signal intended both to be heard by the caller, and to be detected by automated dialing equipment to determine a call has failed. In North America, the AT&T/Bellcore SIT standard allows the frequency and duration of the tones to vary slightly - making eight distinct messages specifically ...