diff --git a/aosp/vendor/isula/copyfiles.mk b/aosp/vendor/isula/copyfiles.mk
index 984992b9aebe8e653ca1ff06765aa469a7f61c04..959ddf48eae74b1cb2cf78b14a62da4654af61fa 100644
--- a/aosp/vendor/isula/copyfiles.mk
+++ b/aosp/vendor/isula/copyfiles.mk
@@ -15,6 +15,10 @@ PRODUCT_COPY_FILES += \
 PRODUCT_COPY_FILES += \
     vendor/isula/media/audio_policy_configuration.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_policy_configuration.xml \
     vendor/isula/media/primary_audio_policy_configuration.xml:$(TARGET_COPY_OUT_VENDOR)/etc/primary_audio_policy_configuration.xml \
+    vendor/isula/media/audio_policy_engine_configuration.xml:system/vendor/etc/audio_policy_engine_configuration.xml \
+    vendor/isula/media/audio_policy_engine_default_stream_volumes.xml:system/vendor/etc/audio_policy_engine_default_stream_volumes.xml \
+    vendor/isula/media/audio_policy_engine_product_strategies.xml:system/vendor/etc/audio_policy_engine_product_strategies.xml \
+    vendor/isula/media/audio_policy_engine_stream_volumes.xml:system/vendor/etc/audio_policy_engine_stream_volumes.xml \
     frameworks/av/services/audiopolicy/config/bluetooth_audio_policy_configuration_7_0.xml:$(TARGET_COPY_OUT_VENDOR)/etc/bluetooth_audio_policy_configuration_7_0.xml \
     frameworks/av/services/audiopolicy/config/r_submix_audio_policy_configuration.xml:$(TARGET_COPY_OUT_VENDOR)/etc/r_submix_audio_policy_configuration.xml \
     frameworks/av/services/audiopolicy/config/audio_policy_volumes.xml:$(TARGET_COPY_OUT_VENDOR)/etc/audio_policy_volumes.xml \
diff --git a/aosp/vendor/isula/media/audio_policy_engine_configuration.xml b/aosp/vendor/isula/media/audio_policy_engine_configuration.xml
new file mode 100644
index 0000000000000000000000000000000000000000..4ca33b4525557375179a06f954d317a1de62bc4e
--- /dev/null
+++ b/aosp/vendor/isula/media/audio_policy_engine_configuration.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+     -->
+
+<configuration version="1.0" xmlns:xi="http://www.w3.org/2001/XInclude">
+
+    <xi:include href="audio_policy_engine_product_strategies.xml"/>
+    <xi:include href="audio_policy_engine_stream_volumes.xml"/>
+    <xi:include href="audio_policy_engine_default_stream_volumes.xml"/>
+
+</configuration>
+
diff --git a/aosp/vendor/isula/media/audio_policy_engine_default_stream_volumes.xml b/aosp/vendor/isula/media/audio_policy_engine_default_stream_volumes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..21e6dd58ac2bdd8578c4e832b47662e6a880a598
--- /dev/null
+++ b/aosp/vendor/isula/media/audio_policy_engine_default_stream_volumes.xml
@@ -0,0 +1,136 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright (C) 2015 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- Default Volume Tables included by Audio Policy Configuration file -->
+<!-- Full Default Volume table for all device category -->
+<volumes>
+    <reference name="FULL_SCALE_VOLUME_CURVE">
+    <!-- Full Scale reference Volume Curve -->
+        <point>0,0</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="SILENT_VOLUME_CURVE">
+        <point>0,-9600</point>
+        <point>100,-9600</point>
+    </reference>
+    <reference name="DEFAULT_SYSTEM_VOLUME_CURVE">
+    <!-- Default System reference Volume Curve -->
+        <point>1,-2400</point>
+        <point>33,-1800</point>
+        <point>66,-1200</point>
+        <point>100,-600</point>
+    </reference>
+    <reference name="DEFAULT_MEDIA_VOLUME_CURVE">
+    <!-- Default Media reference Volume Curve -->
+        <point>1,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE">
+    <!--Default Volume Curve -->
+        <point>1,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE">
+    <!-- Default is Speaker Media Volume Curve -->
+        <point>1,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_SPEAKER_SYSTEM_VOLUME_CURVE">
+    <!-- Default is Speaker System Volume Curve -->
+        <point>1,-4680</point>
+        <point>42,-2070</point>
+        <point>85,-540</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE">
+    <!--Default Volume Curve -->
+        <point>1,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE">
+    <!-- Default is Ext Media System Volume Curve -->
+        <point>1,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-2100</point>
+        <point>100,-1000</point>
+    </reference>
+    <reference name="DEFAULT_HEARING_AID_VOLUME_CURVE">
+    <!-- Default Hearing Aid Volume Curve -->
+        <point>1,-12700</point>
+        <point>20,-8000</point>
+        <point>60,-4000</point>
+        <point>100,0</point>
+    </reference>
+    <!-- **************************************************************** -->
+    <!-- Non-mutable default volume curves:                               -->
+    <!--     * first point is always for index 0                          -->
+    <!--     * attenuation is small enough that stream can still be heard -->
+    <reference name="DEFAULT_NON_MUTABLE_VOLUME_CURVE">
+    <!-- Default non-mutable reference Volume Curve -->
+    <!--        based on DEFAULT_MEDIA_VOLUME_CURVE -->
+        <point>0,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_HEADSET_VOLUME_CURVE">
+    <!--Default non-mutable Volume Curve for headset -->
+    <!--    based on DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE -->
+        <point>0,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_SPEAKER_VOLUME_CURVE">
+    <!-- Default non-mutable Speaker Volume Curve -->
+    <!--    based on DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE -->
+        <point>0,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_EARPIECE_VOLUME_CURVE">
+    <!--Default non-mutable Volume Curve -->
+    <!--    based on DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE -->
+        <point>0,-4950</point>
+        <point>33,-3350</point>
+        <point>66,-1700</point>
+        <point>100,0</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_EXT_VOLUME_CURVE">
+    <!-- Default non-mutable Ext Media System Volume Curve -->
+    <!--     based on DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE -->
+        <point>0,-5800</point>
+        <point>20,-4000</point>
+        <point>60,-2100</point>
+        <point>100,-1000</point>
+    </reference>
+    <reference name="DEFAULT_NON_MUTABLE_HEARING_AID_VOLUME_CURVE">
+    <!-- Default non-mutable Hearing Aid Volume Curve -->
+    <!--     based on DEFAULT_HEARING_AID_VOLUME_CURVE -->
+        <point>0,-12700</point>
+        <point>20,-8000</point>
+        <point>60,-4000</point>
+        <point>100,0</point>
+    </reference>
+</volumes>
diff --git a/aosp/vendor/isula/media/audio_policy_engine_product_strategies.xml b/aosp/vendor/isula/media/audio_policy_engine_product_strategies.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a7388da43662c9fbcf4435f547c6c637303b3b68
--- /dev/null
+++ b/aosp/vendor/isula/media/audio_policy_engine_product_strategies.xml
@@ -0,0 +1,101 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<!-- Copyright (C) 2018 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+     -->
+
+<ProductStrategies>
+
+    <!-- "hidden strategies" like TTS, enforced audible:
+            Shall we expose them here or keep it hard coded -->
+
+    <!-- Used to identify the volume of audio streams for enforced system sounds in certain
+         countries (e.g. camera in Japan)
+         This strategy will only have higher priority than phone if force for system is set to
+         enforced. -->
+
+    <ProductStrategy name="STRATEGY_PHONE">
+        <AttributesGroup streamType="AUDIO_STREAM_VOICE_CALL" volumeGroup="voice_call">
+            <Attributes> <Usage value="AUDIO_USAGE_VOICE_COMMUNICATION"/> </Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_BLUETOOTH_SCO" volumeGroup="bluetooth_sco">
+            <Attributes> <Flags value="AUDIO_FLAG_SCO"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_SONIFICATION">
+        <AttributesGroup streamType="AUDIO_STREAM_RING" volumeGroup="ring">
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_TELEPHONY_RINGTONE"/> </Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_ALARM" volumeGroup="alarm">
+            <Attributes> <Usage value="AUDIO_USAGE_ALARM"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_ENFORCED_AUDIBLE">
+        <AttributesGroup streamType="AUDIO_STREAM_ENFORCED_AUDIBLE" volumeGroup="enforced_audible">
+            <Attributes> <Flags value="AUDIO_FLAG_AUDIBILITY_ENFORCED"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_ACCESSIBILITY">
+        <AttributesGroup streamType="AUDIO_STREAM_ACCESSIBILITY" volumeGroup="accessibility">
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANCE_ACCESSIBILITY"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_SONIFICATION_RESPECTFUL">
+        <AttributesGroup streamType="AUDIO_STREAM_NOTIFICATION" volumeGroup="notification">
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_COMMUNICATION_REQUEST"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_COMMUNICATION_INSTANT"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_COMMUNICATION_DELAYED"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_NOTIFICATION_EVENT"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_MEDIA">
+         <AttributesGroup streamType="AUDIO_STREAM_MUSIC" volumeGroup="music">
+            <Attributes> <Usage value="AUDIO_USAGE_MEDIA"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_GAME"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANT"/> </Attributes>
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE"/> </Attributes>
+            <Attributes></Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_ASSISTANT" volumeGroup="assistant">
+            <Attributes>
+                <ContentType value="AUDIO_CONTENT_TYPE_SPEECH"/>
+                <Usage value="AUDIO_USAGE_ASSISTANT"/>
+            </Attributes>
+        </AttributesGroup>
+        <AttributesGroup streamType="AUDIO_STREAM_SYSTEM" volumeGroup="system">
+            <Attributes> <Usage value="AUDIO_USAGE_ASSISTANCE_SONIFICATION"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <ProductStrategy name="STRATEGY_DTMF">
+        <AttributesGroup streamType="AUDIO_STREAM_DTMF" volumeGroup="dtmf">
+            <Attributes> <Usage value="AUDIO_USAGE_VOICE_COMMUNICATION_SIGNALLING"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+    <!-- Used to identify the volume of audio streams exclusively transmitted through the  speaker
+         (TTS) of the device -->
+    <ProductStrategy name="STRATEGY_TRANSMITTED_THROUGH_SPEAKER">
+        <AttributesGroup streamType="AUDIO_STREAM_TTS" volumeGroup="tts">
+            <Attributes> <Flags value="AUDIO_FLAG_BEACON"/> </Attributes>
+        </AttributesGroup>
+    </ProductStrategy>
+
+</ProductStrategies>
+
diff --git a/aosp/vendor/isula/media/audio_policy_engine_stream_volumes.xml b/aosp/vendor/isula/media/audio_policy_engine_stream_volumes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d5c38968e714e8fd1dbaeb7197347dc7bbcdb999
--- /dev/null
+++ b/aosp/vendor/isula/media/audio_policy_engine_stream_volumes.xml
@@ -0,0 +1,221 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright (C) 2015 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- Volume section defines a volume curve for a given use case and device category.
+It contains a list of points of this curve expressing the attenuation in Millibels for a given
+volume index from 0 to 100.
+<volume deviceCategory=””>
+<point>0,-9600</point>
+<point>100,0</point>
+</volume>
+-->
+
+<volumeGroups>
+    <volumeGroup>
+        <name>voice_call</name>
+        <indexMin>1</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>0,-4200</point>
+            <point>33,-2800</point>
+            <point>66,-1400</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>0,-2400</point>
+            <point>33,-1600</point>
+            <point>66,-800</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE">
+            <point>0,-2700</point>
+            <point>33,-1800</point>
+            <point>66,-900</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>system</name>
+        <indexMin>0</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>1,-5100</point>
+            <point>57,-2800</point>
+            <point>71,-2500</point>
+            <point>85,-2300</point>
+            <point>100,-2100</point>
+        </volume>
+        <!--volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/-->
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>ring</name>
+        <indexMin>0</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>music</name>
+        <indexMin>0</indexMin>
+        <indexMax>25</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID"  ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>alarm</name>
+        <indexMin>1</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_NON_MUTABLE_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_NON_MUTABLE_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_NON_MUTABLE_EARPIECE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_NON_MUTABLE_EXT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_NON_MUTABLE_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>notification</name>
+        <indexMin>0</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_DEVICE_CATEGORY_SPEAKER_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_DEVICE_CATEGORY_EARPIECE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_DEVICE_CATEGORY_HEADSET_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>bluetooth_sco</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>0,-4200</point>
+            <point>33,-2800</point>
+            <point>66,-1400</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>0,-2400</point>
+            <point>33,-1600</point>
+            <point>66,-800</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE">
+            <point>0,-4200</point>
+            <point>33,-2800</point>
+            <point>66,-1400</point>
+            <point>100,0</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>enforced_audible</name>
+        <indexMin>0</indexMin>
+        <indexMax>7</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>1,-3400</point>
+            <point>71,-2400</point>
+            <point>100,-2000</point>
+        </volume>
+        <!--volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/-->
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>dtmf</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET">
+            <point>1,-3000</point>
+            <point>33,-2600</point>
+            <point>66,-2200</point>
+            <point>100,-1800</point>
+        </volume>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER">
+            <point>1,-4000</point>
+            <point>71,-2400</point>
+            <point>100,-1400</point>
+        </volume>
+        <!--volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/-->
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_SYSTEM_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_DEVICE_CATEGORY_EXT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>tts</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="FULL_SCALE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="SILENT_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="SILENT_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>accessibility</name>
+        <indexMin>1</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_NON_MUTABLE_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_NON_MUTABLE_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID" ref="DEFAULT_NON_MUTABLE_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+    <volumeGroup>
+        <name>assistant</name>
+        <indexMin>0</indexMin>
+        <indexMax>15</indexMax>
+        <volume deviceCategory="DEVICE_CATEGORY_HEADSET" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_SPEAKER" ref="DEFAULT_DEVICE_CATEGORY_SPEAKER_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EARPIECE" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_EXT_MEDIA" ref="DEFAULT_MEDIA_VOLUME_CURVE"/>
+        <volume deviceCategory="DEVICE_CATEGORY_HEARING_AID"  ref="DEFAULT_HEARING_AID_VOLUME_CURVE"/>
+    </volumeGroup>
+
+</volumeGroups>
+