diff --git a/media/libmediahelper/AudioParameter.cpp b/media/libmediahelper/AudioParameter.cpp
index 3832e90..c081629 100644
--- a/media/libmediahelper/AudioParameter.cpp
+++ b/media/libmediahelper/AudioParameter.cpp
@@ -43,6 +43,14 @@
 const char * const AudioParameter::keyBtHfpEnable = AUDIO_PARAMETER_KEY_HFP_ENABLE;
 const char * const AudioParameter::keyBtHfpSamplingRate = AUDIO_PARAMETER_KEY_HFP_SET_SAMPLING_RATE;
 const char * const AudioParameter::keyBtHfpVolume = AUDIO_PARAMETER_KEY_HFP_VOLUME;
+const char * const AudioParameter::keyTtyMode = AUDIO_PARAMETER_KEY_TTY_MODE;
+const char * const AudioParameter::valueTtyModeOff = AUDIO_PARAMETER_VALUE_TTY_OFF;
+const char * const AudioParameter::valueTtyModeFull = AUDIO_PARAMETER_VALUE_TTY_FULL;
+const char * const AudioParameter::valueTtyModeHco = AUDIO_PARAMETER_VALUE_TTY_HCO;
+const char * const AudioParameter::valueTtyModeVco = AUDIO_PARAMETER_VALUE_TTY_VCO;
+const char * const AudioParameter::keyHacSetting = AUDIO_PARAMETER_KEY_HAC;
+const char * const AudioParameter::valueHacOff = AUDIO_PARAMETER_VALUE_HAC_OFF;
+const char * const AudioParameter::valueHacOn = AUDIO_PARAMETER_VALUE_HAC_ON;
 const char * const AudioParameter::keyHwAvSync = AUDIO_PARAMETER_HW_AV_SYNC;
 const char * const AudioParameter::keyPresentationId = AUDIO_PARAMETER_STREAM_PRESENTATION_ID;
 const char * const AudioParameter::keyProgramId = AUDIO_PARAMETER_STREAM_PROGRAM_ID;