!!! Overview
[{$pagename}] ([OTAR]) is the common name for the method [Key-Exchange] in a telecommunications system over the communications channel (“over the air”). 

[{$pagename}] is also referred to as Over-the-Air Transfer (OTAT), depending on the specific type and use of key being changed. 

Although the acronym refers specifically to radio transmission means, the technology is also employed via [landline] and [cable|Cable Systems].

!! More Information
There might be more information for this subject on one of the following:
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* [#1] - [Over_the_Air_Rekeying|Wikipedia:Over_the_Air_Rekeying|target='_blank'] - based on information obtained 2017-01-07-