双速率，信道的首选项能过话音编码首选项来指示，第一次信道分配后全速率和半速率之间的改变是不允许的。
Dual rate, channel preference indicated by the Speech coder preference, changes between full rate and half rate Not allowed after first channel allocation as a result of the request.
双速率，信道的首选项能过话音编码首选项来指示，第一次信道分配后全速率和半速率之间的改变是允许的。
Dual rate, channel preference indicated by the Speech coder preference, Changes between full rate and half rate allowed after first channel allocation as a result of the request.
双速率，信道的首选项能过话音编码首选项来指示，第一次信道分配后全速率和半速率之间的改变是不允许的。
DRSN Dual rate, channel preference indicated by the Speech coder preference, changes between full rate and half rate Not allowed after first channel allocation as a result of the request.
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