TIA-102.CAABE:2021现行

This Standard provides physical layer performance standards under standard conditions for 12.5 kHz channelization digitally modulated radio equipment with a maximum operating frequency of 1 GHz or less in the Private (Dispatch) Land Mobile Radio Services that employ compatible 4 level frequency modulation (C4FM) or compatible differential offset quadrature phase shift keying (CQPSK) or standard simulcast modulations for systems using digital modulation for transmission of voice or circuit switched data compliant with the Um reference point in [1], which defines the requirements of both the Physical Layer and the Data Link Layer in the OSI reference model.