... LinksForward and reverse traffic channels operate at avariablebit rate: full rate,halfrate, one-fourth rate, and one-eighth rate. These rates are 9.6, 4. 8, 2 .4, and 1.2kbit/s for RateSet 1, and 14. 4,7.2, ... corresponds to a 64- ary orthogonal modulation. For the trafficchannels, vocoders at variable data rates of 9.6, 4. 8, 2 .4, and 1.2 kbit/s forRate Set 1 and 14. 4, 7.2, 3.6, and 1.8 kbit/s for ... kbit/s. For traffic channels, vocoders at variabledata rates of 9.6, 4. 8, 2 .4, and 1.2 kbit/s for Rate Set 1, and 14. 4, 7.2, 3.6, and 1.8 kbit/s for Rate Set 2 are specified. The various transmission...