diff --git a/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt
index a303425f..bbada35f 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/AudioActivity.kt
@@ -18,6 +18,7 @@ class AudioActivity : AppCompatActivity() {
     private lateinit var opusBitRate: EditText
     private lateinit var opusPacketLoss: EditText
     private lateinit var aec: CheckBox
+    private lateinit var audioDelay: EditText
 
     private var save = false
     private var reload = false
@@ -26,6 +27,7 @@ class AudioActivity : AppCompatActivity() {
     private var oldOpusBitrate = ""
     private var oldOpusPacketLoss = ""
     private var oldAec = false
+    private var oldAudioDelay = BaresipService.audioDelay.toString()
     private val audioModules = listOf("opus", "amr", "g722", "g7221", "g726", "g729", "g711")
 
     private val onBackPressedCallback = object : OnBackPressedCallback(true) {
@@ -121,6 +123,9 @@ class AudioActivity : AppCompatActivity() {
         oldAec = aecCv.contains("webrtc_aecm.so")
         aec.isChecked = oldAec
 
+        audioDelay = binding.AudioDelay
+        audioDelay.setText(oldAudioDelay)
+
         bindTitles()
 
         onBackPressedDispatcher.addCallback(this, onBackPressedCallback)
@@ -219,6 +224,19 @@ class AudioActivity : AppCompatActivity() {
                     save = true
                 }
 
+                val audioDelay = audioDelay.text.toString().trim()
+                if (audioDelay != oldAudioDelay) {
+                    if (!checkAudioDelay(audioDelay)) {
+                        Utils.alertView(this, getString(R.string.notice),
+                                String.format(getString(R.string.invalid_audio_delay), audioDelay))
+                        return false
+                    }
+                    Config.removeVariable("audio_delay")
+                    Config.addLine("audio_delay $audioDelay")
+                    BaresipService.audioDelay = audioDelay.toLong()
+                    save = true
+                }
+
                 if (save) Config.save()
 
                 if (reload) Api.reload_config()
@@ -265,6 +283,10 @@ class AudioActivity : AppCompatActivity() {
             Utils.alertView(this, getString(R.string.aec),
                     getString(R.string.aec_help))
         }
+        binding.AudioDelayTitle.setOnClickListener {
+            Utils.alertView(this, getString(R.string.audio_delay),
+                    getString(R.string.audio_delay_help))
+        }
     }
 
     private fun checkOpusBitRate(opusBitRate: String): Boolean {
@@ -277,4 +299,8 @@ class AudioActivity : AppCompatActivity() {
         return (number >= 0) && (number <= 100)
     }
 
+    private fun checkAudioDelay(audioDelay: String): Boolean {
+        val number = audioDelay.toIntOrNull() ?: return false
+        return (number >= 100) && (number <= 3000)
+    }
 }
diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index 5b9b477c..ed687540 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -1474,6 +1474,7 @@ class BaresipService: Service() {
         var isConfigInitialized = false
         var libraryLoaded = false
         var callVolume = 0
+        var audioDelay = if (VERSION.SDK_INT < 31) 1500L else 100L
         var dynDns = false
         var filesPath = ""
         var pName = ""
diff --git a/app/src/main/kotlin/com/tutpro/baresip/Config.kt b/app/src/main/kotlin/com/tutpro/baresip/Config.kt
index 147469bc..ddd95735 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/Config.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/Config.kt
@@ -75,6 +75,10 @@ object Config {
             BaresipService.callVolume = variable("call_volume")[0].toInt()
         }
 
+        if (config.contains("audio_delay")) {
+            BaresipService.audioDelay = variable("audio_delay")[0].toLong()
+        }
+
         if (config.contains("net_af"))
             BaresipService.addressFamily = variable("net_af")[0]
 
diff --git a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
index 66712fa8..37b106b9 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt
@@ -1886,45 +1886,27 @@ class MainActivity : AppCompatActivity() {
                     hangupButton.visibility = View.VISIBLE
                     hangupButton.isEnabled = true
                     if (Build.VERSION.SDK_INT < 31) {
+                        Log.d(TAG, "Setting audio mode to MODE_IN_COMMUNICATION")
                         am.mode = AudioManager.MODE_IN_COMMUNICATION
-                        callRunnable = Runnable {
-                            callRunnable = null
-                            if (!call(ua, uri)) {
-                                callButton.visibility = View.VISIBLE
-                                callButton.isEnabled = true
-                                hangupButton.visibility = View.INVISIBLE
-                                hangupButton.isEnabled = false
-                            }
-                        }
-                        callHandler.postDelayed(callRunnable!!, 1500)
+                        runCall(ua, uri)
                     } else {
-                        audioModeChangedListener = AudioManager.OnModeChangedListener { mode ->
-                            if (mode == AudioManager.MODE_IN_COMMUNICATION) {
-                                Log.d(TAG, "Audio mode changed to MODE_IN_COMMUNICATION using " +
-                                        "device ${am.communicationDevice!!.type}")
-                                if (audioModeChangedListener != null) {
-                                    am.removeOnModeChangedListener(audioModeChangedListener!!)
-                                    audioModeChangedListener = null
-                                }
-                                if (!call(ua, uri)) {
-                                    callButton.visibility = View.VISIBLE
-                                    callButton.isEnabled = true
-                                    hangupButton.visibility = View.INVISIBLE
-                                    hangupButton.isEnabled = false
-                                }
-                            } else {
-                                Log.d(TAG, "Audio mode changed to mode ${am.mode} using " +
-                                    "device ${am.communicationDevice!!.type}")
-                            }
-                        }
                         if (am.mode == AudioManager.MODE_IN_COMMUNICATION) {
-                            if (!call(ua, uri)) {
-                                callButton.visibility = View.VISIBLE
-                                callButton.isEnabled = true
-                                hangupButton.visibility = View.INVISIBLE
-                                hangupButton.isEnabled = false
-                            }
+                            runCall(ua, uri)
                         } else {
+                            audioModeChangedListener = AudioManager.OnModeChangedListener { mode ->
+                                if (mode == AudioManager.MODE_IN_COMMUNICATION) {
+                                    Log.d(TAG, "Audio mode changed to MODE_IN_COMMUNICATION using " +
+                                            "device ${am.communicationDevice!!.type}")
+                                    if (audioModeChangedListener != null) {
+                                        am.removeOnModeChangedListener(audioModeChangedListener!!)
+                                        audioModeChangedListener = null
+                                    }
+                                    runCall(ua, uri)
+                                } else {
+                                    Log.d(TAG, "Audio mode changed to mode ${am.mode} using " +
+                                        "device ${am.communicationDevice!!.type}")
+                                }
+                            }
                             am.addOnModeChangedListener(mainExecutor, audioModeChangedListener!!)
                             Log.d(TAG, "Setting audio mode to MODE_IN_COMMUNICATION")
                             am.mode = AudioManager.MODE_IN_COMMUNICATION
@@ -1939,6 +1921,20 @@ class MainActivity : AppCompatActivity() {
         }
     }
 
+    private fun runCall(ua: UserAgent, uri: String) {
+        callRunnable = Runnable {
+            callRunnable = null
+            if (!call(ua, uri)) {
+                am.mode = AudioManager.MODE_NORMAL
+                callButton.visibility = View.VISIBLE
+                callButton.isEnabled = true
+                hangupButton.visibility = View.INVISIBLE
+                hangupButton.isEnabled = false
+            }
+        }
+        callHandler.postDelayed(callRunnable!!, BaresipService.audioDelay)
+    }
+
     private fun showCall(ua: UserAgent, showCall: Call? = null) {
         val call = showCall ?: ua.currentCall()
         if (call == null) {
diff --git a/app/src/main/res/layout/activity_audio.xml b/app/src/main/res/layout/activity_audio.xml
index 2c5d68ee..2cda463a 100644
--- a/app/src/main/res/layout/activity_audio.xml
+++ b/app/src/main/res/layout/activity_audio.xml
@@ -146,6 +146,36 @@
             </CheckBox>
         </RelativeLayout>
 
+        <RelativeLayout
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginBottom="12dp"
+            android:orientation="horizontal" >
+            <TextView
+                android:id="@+id/AudioDelayTitle"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentStart="true"
+                android:layout_centerVertical="true"
+                android:textSize="18sp"
+                android:text="@string/audio_delay" >
+            </TextView>
+            <EditText
+                android:id="@+id/AudioDelay"
+                android:layout_height="wrap_content"
+                android:layout_width="fill_parent"
+                android:layout_centerVertical="true"
+                android:layout_toEndOf="@+id/AudioDelayTitle"
+                android:layout_marginStart="10dp"
+                android:textSize="18sp"
+                android:scrollHorizontally="true"
+                android:inputType="number"
+                android:hint="@string/_0"
+                android:textColorHint="@color/colorSecondaryDark"
+                android:importantForAutofill="no" >
+            </EditText>
+        </RelativeLayout>
+
     </LinearLayout>
 
 </ScrollView>
diff --git a/app/src/main/res/layout/activity_config.xml b/app/src/main/res/layout/activity_config.xml
index cc08e9ee..5e40dc1c 100644
--- a/app/src/main/res/layout/activity_config.xml
+++ b/app/src/main/res/layout/activity_config.xml
@@ -232,7 +232,7 @@
             android:id="@+id/AudioSettingsTitle"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginBottom="12dp"
+            android:layout_marginBottom="18dp"
             android:textSize="18sp"
             android:textStyle="bold"
             android:text="@string/audio_settings" >
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index 30d514b0..f9a552ad 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -377,6 +377,10 @@
         ei ole käytössä.</string>
     <string name="invalid_opus_bitrate">Virheellinen Opus-koodekin bittinopeus</string>
     <string name="invalid_opus_packet_loss">Virheellinen Opus-koodekin odotettu pakettihäviö</string>
+    <string name="audio_delay">Audioviive</string>
+    <string name="audio_delay_help">Audion odotusviive (millisekunneissa) soitetun puhelun alkaessa.
+        Aseta korkeampi arvo, jos et kuule vastaajan ääntä heti, kun puhelu alkaa.</string>
+    <string name="invalid_audio_delay">Virheellinen audioviive \'%1$s\'. Sallittu arvo on välillä 100–3000.</string>
     <string name="default_call_volume">Oletus äänen voimakkuus</string>
     <string name="default_call_volume_help">Jos valittu, puhelun äänen voimakkuus
     asteikolla 1–10.
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index bd5d7e56..286a0199 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -354,6 +354,10 @@
     <string name="_0" translatable="false">0</string>
     <string name="invalid_opus_bitrate">Invalid Opus bitrate</string>
     <string name="invalid_opus_packet_loss">Invalid Opus Packet Loss Percentage</string>
+    <string name="audio_delay">Audio Delay</string>
+    <string name="audio_delay_help">Time (in milliseconds) to wait audio from callee when call is established.
+        Set to a higher value if you miss audio from callee at the beginning of the call.</string>
+    <string name="invalid_audio_delay">Invalid Audio Delay \'%1$s\'. Valid values are from 100 to 3000.</string>
     <string name="default_call_volume">Default Call Volume</string>
     <string name="default_call_volume_help">If set, default call audio volume at scale 1–10.</string>
     <string name="dark_theme">Dark Theme</string>