A COMMUNICATIONS APPARATUS AND A METHOD THEREFOR

摘要

A communications apparatus (100) for a network comprises a 64 kbit/s pulse code modulator (112) and a low rate vocoder (110) operably connected between a network interface (108) and a radio transceiver (114). The pulse code modulator (112) operates at a greater data rate than the vocoder (110). A controller (116) is arranged to select the pulse code modulator (112) or the vocoder (110) in response to at least one predetermined criteria relating to a performance requirement.