Total Access Communications System. A derivative of the AT&T-developed analog cellular radio standard AMPS (Advanced Mobile Phone Service) adopted by U.K. Cellnet and Racal-Vodaphone, operating at 900MHz.
Total Access Communication System. U.K. adopted version of the AT&T analog cellular radio standard AMPS operating at 900 mhz. TACS is designed with maximum consideration for very high subscriber densities in large urban areas as well as for sparsely populated smaller cities.