... >18dB within 50Hz3100kHz.(6) Signal structure(6.1) Non-frame structure(6.2) Frame structure: PCM30, PCM31, PCM30CRC, PCM31CRC,Frame structure complies with the requirement of G ... ,4800,7200,960014.4k,19.2k,38.4k,57.6kbpsData structure: Word length: 5,6,7,8bitsStop bit: 1,2bitsOdd-even ...