In many ways, remote base stations controlled by radio, resemble repeaters with additional features.
Remote base stations are usually run and maintained by individual hobbyists or clubs.
When using a radio link, remotely controlling an auxiliary base station consists of sending the primary signal (voice or data) along with some form of control signal, such as DTMF tones, to another station to change its operating parameters i.e. turn it on or off, change frequency or transmitter power level, rotate the antenna, etc.
References in two paragraphs following are noted in square brackets and refer to the United States FCC Regulation 97 28th Revised Edition Updated to January 2012, governing the Amateur Radio Service.
Telecommand is defined by the Federal Communications Commission as a one-way transmission to initiate, modify or terminate functions of a device at a distance [97.3(a)(43)].