diff --git a/hal/audio_extn/audio_extn.h b/hal/audio_extn/audio_extn.h
index e0f9883..22c2306 100644
--- a/hal/audio_extn/audio_extn.h
+++ b/hal/audio_extn/audio_extn.h
@@ -55,10 +55,6 @@
 #define AUDIO_DEVICE_OUT_PROXY 0x40000
 #endif
 
-#ifndef COMPRESS_VOIP_ENABLED
-#define AUDIO_OUTPUT_FLAG_VOIP_RX 0x4000
-#endif
-
 #ifndef INCALL_MUSIC_ENABLED
 #define AUDIO_OUTPUT_FLAG_INCALL_MUSIC 0x8000
 #endif
diff --git a/hal/audio_extn/utils.c b/hal/audio_extn/utils.c
index 75bb336..e65dd7c 100644
--- a/hal/audio_extn/utils.c
+++ b/hal/audio_extn/utils.c
@@ -68,9 +68,6 @@
 #ifdef INCALL_MUSIC_ENABLED
     STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_INCALL_MUSIC),
 #endif
-#ifdef COMPRESS_VOIP_ENABLED
-    STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_VOIP_RX),
-#endif
     STRING_TO_ENUM(AUDIO_OUTPUT_FLAG_COMPRESS_PASSTHROUGH),
 };
 
diff --git a/hal/voice_extn/compress_voip.c b/hal/voice_extn/compress_voip.c
index 14af6fc..04e0cd0 100644
--- a/hal/voice_extn/compress_voip.c
+++ b/hal/voice_extn/compress_voip.c
@@ -64,17 +64,9 @@
     uint32_t sample_rate;
 };
 
-#define MODE_IS127              0x2
-#define MODE_4GV_NB             0x3
-#define MODE_4GV_WB             0x4
-#define MODE_AMR                0x5
-#define MODE_AMR_WB             0xD
 #define MODE_PCM                0xC
-#define MODE_4GV_NW             0xE
 
 #define AUDIO_PARAMETER_KEY_VOIP_RATE               "voip_rate"
-#define AUDIO_PARAMETER_KEY_VOIP_EVRC_RATE_MIN      "evrc_rate_min"
-#define AUDIO_PARAMETER_KEY_VOIP_EVRC_RATE_MAX      "evrc_rate_max"
 #define AUDIO_PARAMETER_KEY_VOIP_DTX_MODE           "dtx_on"
 #define AUDIO_PARAMETER_VALUE_VOIP_TRUE             "true"
 #define AUDIO_PARAMETER_KEY_VOIP_CHECK              "voip_flag"
@@ -94,8 +86,6 @@
 static int voip_set_mic_mute(struct audio_device *adev, bool state);
 static int voip_set_mode(struct audio_device *adev, int format);
 static int voip_set_rate(struct audio_device *adev, int rate);
-static int voip_set_evrc_min_max_rate(struct audio_device *adev, int min_rate,
-                               int max_rate);
 static int voip_set_dtx(struct audio_device *adev, bool enable);
 static int voip_stop_call(struct audio_device *adev);
 static int voip_start_call(struct audio_device *adev,
@@ -103,32 +93,10 @@
 
 static int audio_format_to_voip_mode(int format)
 {
-    int mode;
+    int mode = 0;
 
-    switch(format) {
-        case AUDIO_FORMAT_PCM_16_BIT:
-            mode = MODE_PCM;
-            break;
-        case AUDIO_FORMAT_AMR_NB:
-            mode = MODE_AMR;
-            break;
-        case AUDIO_FORMAT_AMR_WB:
-            mode = MODE_AMR_WB;
-            break;
-        case AUDIO_FORMAT_EVRC:
-            mode = MODE_IS127;
-            break;
-        case AUDIO_FORMAT_EVRCB:
-            mode = MODE_4GV_NB;
-            break;
-        case AUDIO_FORMAT_EVRCWB:
-            mode = MODE_4GV_WB;
-            break;
-        case AUDIO_FORMAT_EVRCNW:
-            mode = MODE_4GV_NW;
-            break;
-        default:
-            mode = MODE_PCM;
+    if (format == AUDIO_FORMAT_PCM_16_BIT) {
+        mode = MODE_PCM;
     }
     return mode;
 }
@@ -233,30 +201,6 @@
     return 0;
 }
 
-static int voip_set_evrc_min_max_rate(struct audio_device *adev, int min_rate,
-                               int max_rate)
-{
-    struct mixer_ctl *ctl;
-    const char *mixer_ctl_name = "Voip Evrc Min Max Rate Config";
-    uint32_t set_values[ ] = {0, 0};
-
-    ALOGD("%s: enter, min_rate=%d, max_rate=%d",
-          __func__, min_rate, max_rate);
-
-    set_values[0] = min_rate;
-    set_values[1] = max_rate;
-    ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
-    if (!ctl) {
-        ALOGE("%s: Could not get ctl for mixer cmd - %s",
-               __func__, mixer_ctl_name);
-        return -EINVAL;
-    }
-    mixer_ctl_set_array(ctl, set_values, ARRAY_SIZE(set_values));
-
-    ALOGV("%s: exit", __func__);
-    return 0;
-}
-
 static int voip_set_dtx(struct audio_device *adev, bool enable)
 {
     struct mixer_ctl *ctl;
@@ -438,26 +382,6 @@
     if (err >= 0) {
         rate = atoi(value);
         voip_set_rate(adev, rate);
-        voip_set_evrc_min_max_rate(adev, rate, rate);
-    }
-
-    memset(value, 0, sizeof(value));
-    err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_VOIP_EVRC_RATE_MIN,
-                            value, sizeof(value));
-    if (err >= 0) {
-        min_rate = atoi(value);
-        str_parms_del(parms, AUDIO_PARAMETER_KEY_VOIP_EVRC_RATE_MIN);
-        memset(value, 0, sizeof(value));
-        err = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_VOIP_EVRC_RATE_MAX,
-                                value, sizeof(value));
-        if (err >= 0) {
-            max_rate = atoi(value);
-            voip_set_evrc_min_max_rate(adev, min_rate, max_rate);
-        } else {
-            ALOGE("%s: AUDIO_PARAMETER_KEY_VOIP_EVRC_RATE_MAX not found", __func__);
-            ret = -EINVAL;
-            goto done;
-        }
     }
 
     memset(value, 0, sizeof(value));
@@ -786,13 +710,6 @@
             return true;
         else
             return false;
-    case AUDIO_FORMAT_AMR_NB:
-    case AUDIO_FORMAT_AMR_WB:
-    case AUDIO_FORMAT_EVRC:
-    case AUDIO_FORMAT_EVRCB:
-    case AUDIO_FORMAT_EVRCWB:
-    case AUDIO_FORMAT_EVRCNW:
-        return true;
     default:
         return false;
     }