CheckSetting
ECHOSTATUS CheckSetting(INT32 iValue,INT32 iMin,INT32 iMax);
Status = CheckSetting(iLevel,ECHOGAIN_MINOUT,ECHOGAIN_MAXOUT);
Status = CheckSetting(iLevel,ECHOGAIN_MININP,ECHOGAIN_MAXINP);
Status = CheckSetting(iLevel,ECHOGAIN_MINOUT,ECHOGAIN_MAXOUT);
Status = CheckSetting(iGain,ECHOGAIN_MINOUT,ECHOGAIN_MAXOUT);
Status = CheckSetting(iPan,0,MAX_MIXER_PAN);