Automatic redial
For the European organisation, see REDIAL.
In telecommunication, an automatic redial is a service feature that allows the user to dial, by depressing a single key or a few keys, the most recent telephone number dialed at that instrument.
Note: Automatic redial is often associated with the telephone instrument, but may be provided by a PBX, or by the central office. Synonym last number redial. Contrast with automatic calling unit.
Often one must subscribe to a caller ID for use of this function on a landline.
References
This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C".
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