MPT 1318 : engineering memorandum: trunked systems in the land mobile service / Radiocommunications Agency
MPT 1327 : A signalling standard for trunked private land mobile radio systems: January 1988 / Radiocommunications Agency
MPT 1347 : Radio interface specification: for commercial trunked networks operating in Band III, Sub-band 2: August 1988 / Radiocommunications Agency
MPT 1403 : issue 4: performance specifications and frequency assignment criteria for digital private fixed radio relay equipment and antennas operating in the frequency bands 12.75 GHz to 13.25 GHz and/or 14.25 GHz to 14.5 GHz / Radiocommunications Agency