Automatic ring back is a service offered by
phone companies
A telephone company, also known as a telco, telephone service provider, or telecommunications operator, is a kind of communications service provider (CSP), more precisely a telecommunications service provider (TSP), that provides telecommunicat ...
.
On making a telephone call to a number that is engaged, automatic ring back is a service provided by the telephone company whereby, when the called number becomes available, the caller is rung back, usually with a distinctive "ring back" ring. When the phone is picked up, it calls the previously engaged number. The service is typically invoked by keying a number on hearing the engaged tone.
In the
UK the service is also known as Ringback.
BT Ringback
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In the United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...
the service is often called Auto Redial.
In the United States Army
The United States Army (USA) is the land warfare, land military branch, service branch of the United States Armed Forces. It is one of the eight Uniformed services of the United States, U.S. uniformed services, and is designated as the Army o ...
on post wide communications networks, this is referred to as Callback or Automatic Callback.
See also
* Callback
Callback may refer to:
* Callback (comedy), a joke which refers to one previously told
* Callback (computer programming), executable code that is passed as a parameter to other code
* Callback (telecommunications), the telecommunications event th ...
* Camp-on busy signal
In telecommunication, the term camp-on busy signal has the following meanings:
*A signal that informs a busy telephone user that another call originator is waiting for a connection. Synonym: ''call waiting''
*A teleprinter exchange
Exchange m ...
* Vertical service code
A vertical service code (VSC) is a sequence of digits and the signals star (*) and number sign (#) dialed on a telephone keypad or rotary dial to enable or disable certain telephone service features. Some vertical service codes require dialing of ...
References
Calling features
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