A silent call is a telephone call that is generated by a predictive dialler (or dialler) which does not have an agent immediately available to handle the call. In this instance the call may be terminated by the dialler, and the called party receives a silence ("dead air") or a tone from the telephone company which indicates the call has been dropped.
In the U.S., the Federal Trade Commission (FTC) uses the term "abandoned call" instead of silent call in its regulations applying to telemarketing. "Abandoned call" in non-FTC contexts may refer to a caller who decides not to await answer before hanging up.
For more information on why the technology makes silent calls, see predictive dialer.
Read more about Silent Call: Other Reasons For Silent Calls, Telemarketing and The UK DMA, The Legal Position in The UK, The No Agent Available (NAA) Message
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