diff --git a/app/build.gradle b/app/build.gradle
index cc86c892..9a2f7fad 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -8,8 +8,8 @@ android {
         applicationId = 'com.tutpro.baresip'
         minSdkVersion 21
         targetSdkVersion 28
-        versionCode = 55
-        versionName = '7.0.0'
+        versionCode = 56
+        versionName = '7.1.0'
         externalNativeBuild {
             cmake {
                 cFlags '-DHAVE_INTTYPES_H'
diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index 9f2670c9..bdc0ab1b 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -25,6 +25,7 @@ import java.io.File
 import java.nio.charset.StandardCharsets
 import java.io.InputStream
 import java.util.*
+import kotlin.math.roundToInt
 
 class BaresipService: Service() {
 
@@ -41,6 +42,7 @@ class BaresipService: Service() {
     internal var filesPath = ""
     internal var audioFocusRequest: AudioFocusRequest? = null
     internal var audioFocused = false
+    internal var origCallVolume = 0
 
     override fun onCreate() {
 
@@ -159,11 +161,16 @@ class BaresipService: Service() {
                                 contents = "prefer_ipv6 no\n${contents}"
                                 write = true
                             }
+                            if (!contents.contains("call_volume")) {
+                                contents = "${contents}call_volume 0\n"
+                                write = true
+                            } else {
+                                callVolume = Utils.getNameValue(contents, "call_volume")[0].toInt()
+                            }
                             if (write) {
                                 Log.d(LOG_TAG, "Writing '$contents'")
                                 Utils.putFileContents(file, contents)
                             }
-
                         }
                     }
                 }
@@ -428,6 +435,13 @@ class BaresipService: Service() {
                             am.mode = AudioManager.MODE_IN_COMMUNICATION
                             requestAudioFocus(AudioManager.STREAM_VOICE_CALL)
                         }
+                        if (callVolume != 0) {
+                            origCallVolume = am.getStreamMaxVolume(am.mode)
+                            am.setStreamVolume(am.mode,
+                                    (callVolume * 0.1 * am.getStreamMaxVolume(am.mode)).roundToInt(),
+                                    0)
+                        }
+                        Log.d(LOG_TAG, "Call volume of stream ${am.mode} is ${am.getStreamVolume(am.mode)}")
                     }
                     "call verified", "call secure" -> {
                         val call = Call.find(callp)
@@ -507,6 +521,11 @@ class BaresipService: Service() {
                         }
                         if (Call.calls().size == 0) {
                             abandonAudioFocus()
+                            if (origCallVolume != 0) {
+                                am.setStreamVolume(am.mode, origCallVolume, 0)
+                                origCallVolume = 0
+                            }
+                            Log.d(LOG_TAG, "Call volume of stream ${am.mode} is ${am.getStreamVolume(am.mode)}")
                             am.mode = AudioManager.MODE_NORMAL
                             if (am.isSpeakerphoneOn) am.isSpeakerphoneOn = false
                             speakerPhone = false
@@ -786,6 +805,7 @@ class BaresipService: Service() {
         var libraryLoaded = false
         var isServiceClean = false
         var speakerPhone = false
+        var callVolume = 0
 
         var uas = ArrayList<UserAgent>()
         var status = ArrayList<Int>()
diff --git a/app/src/main/kotlin/com/tutpro/baresip/ConfigActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/ConfigActivity.kt
index 0128b9cd..2404277d 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/ConfigActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/ConfigActivity.kt
@@ -28,6 +28,7 @@ class ConfigActivity : AppCompatActivity() {
     private var oldOpusBitrate = ""
     private var oldIceMode = ""
     private var oldLogLevel = ""
+    private var callVolume = BaresipService.callVolume
     private var save = false
     private var restart = false
     private var config = ""
@@ -72,6 +73,27 @@ class ConfigActivity : AppCompatActivity() {
         oldIceMode = if (imCv.size == 0) "full" else imCv[0]
         iceLite.isChecked = oldIceMode == "lite"
 
+        val callVolSpinner = findViewById(R.id.VolumeSpinner) as Spinner
+        val volKeys = arrayListOf("None", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10")
+        val volVals = arrayListOf(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
+        val curVal = callVolume
+        val curKey = volKeys[curVal]
+        volKeys.removeAt(curVal)
+        volVals.removeAt(curVal)
+        volKeys.add(0, curKey)
+        volVals.add(0, curVal)
+        val callVolAdapter = ArrayAdapter<String>(this,android.R.layout.simple_spinner_item,
+                volKeys)
+        callVolAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item)
+        callVolSpinner.adapter = callVolAdapter
+        callVolSpinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
+            override fun onItemSelected(parent: AdapterView<*>, view: View, position: Int, id: Long) {
+                callVolume = volVals[volKeys.indexOf(parent.selectedItem.toString())]
+            }
+            override fun onNothingSelected(parent: AdapterView<*>) {
+            }
+        }
+
         debug = findViewById(R.id.Debug) as CheckBox
         val dbCv = Utils.getNameValue(config, "log_level")
         if (dbCv.size == 0)
@@ -150,6 +172,13 @@ class ConfigActivity : AppCompatActivity() {
                 restart = true
             }
 
+            if (BaresipService.callVolume != callVolume) {
+                BaresipService.callVolume = callVolume
+                config = Utils.removeLinesStartingWithName(config, "call_volume")
+                config += "\ncall_volume $callVolume\n"
+                save = true
+            }
+
             var logLevelString = "2"
             if (debug.isChecked) logLevelString = "0"
             if (oldLogLevel != logLevelString) {
@@ -212,6 +241,9 @@ class ConfigActivity : AppCompatActivity() {
             findViewById(R.id.IceLiteTitle) as TextView-> {
                 Utils.alertView(this, "ICE Lite Mode", getString(R.string.iceLite))
             }
+            findViewById(R.id.VolumeTitle) as TextView-> {
+                Utils.alertView(this, "Call Volume", getString(R.string.callVolume))
+            }
             findViewById(R.id.DebugTitle) as TextView-> {
                 Utils.alertView(this, "Debug", getString(R.string.debug))
             }
diff --git a/app/src/main/res/layout/activity_config.xml b/app/src/main/res/layout/activity_config.xml
index 64fbcc87..430cefb6 100644
--- a/app/src/main/res/layout/activity_config.xml
+++ b/app/src/main/res/layout/activity_config.xml
@@ -13,12 +13,12 @@
         android:paddingLeft="16dp"
         android:paddingRight="16dp"
         android:paddingTop="16dp"
-        android:paddingBottom="24dp"
         android:focusableInTouchMode="true" >
 
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
             android:orientation="horizontal" >
             <TextView
                 android:id="@+id/AutoStartTitle"
@@ -45,6 +45,7 @@
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
             android:orientation="horizontal" >
             <TextView
                 android:id="@+id/PreferIPv6Title"
@@ -73,7 +74,6 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_centerVertical="true"
-            android:paddingTop="6dp"
             android:onClick="onClick"
             android:text="DNS Servers"
             android:textColor="@android:color/black"
@@ -85,12 +85,14 @@
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:layout_centerVertical="true"
+            android:layout_marginBottom="12dp"
             android:textSize="18sp">
         </EditText>
 
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
             android:orientation="horizontal" >
             <TextView
                 android:id="@+id/OpusBitRateTitle"
@@ -119,6 +121,7 @@
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
             android:orientation="horizontal" >
             <TextView
                 android:id="@+id/IceLiteTitle"
@@ -145,6 +148,34 @@
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
+            android:orientation="horizontal" >
+            <TextView
+                android:id="@+id/VolumeTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentStart="true"
+                android:layout_centerVertical="true"
+                android:textSize="18sp"
+                android:textColor="@android:color/black"
+                android:onClick="onClick"
+                android:text="Default Call Volume" >
+            </TextView>
+            <Spinner
+                android:id="@+id/VolumeSpinner"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentEnd="true"
+                android:layout_centerVertical="true"
+                android:layout_gravity="end"
+                android:popupBackground="@drawable/spinner_background" >
+            </Spinner>
+        </RelativeLayout>
+
+        <RelativeLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
             android:orientation="horizontal" >
             <TextView
                 android:id="@+id/DebugTitle"
@@ -171,6 +202,7 @@
         <RelativeLayout
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
             android:orientation="horizontal" >
             <TextView
                 android:id="@+id/ResetTitle"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b5f071ca..22295cc3 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -62,6 +62,7 @@
     <string name="opusBitRate">Average maximum bit rate used by Opus audio stream.
         Valid value are 6000-510000. Factory default is 28000.</string>
     <string name="iceLite">If checked, ICE Lite Mode is used.</string>
+    <string name="callVolume">If set, default call audio volume at scale 1-10.</string>
     <string name="debug">If checked, debug and info level log messages are available in logcat.</string>
     <string name="reset">If checked, configuration is reset to factory default.</string>
 </resources>
diff --git a/fastlane/metadata/android/en-US/changelogs/7.1.0.txt b/fastlane/metadata/android/en-US/changelogs/7.1.0.txt
new file mode 100644
index 00000000..5fdc6738
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/7.1.0.txt
@@ -0,0 +1 @@
+- Added 'Default Call Volume' configuration option.