diff --git a/app/build.gradle b/app/build.gradle
index c9b74542..cf9c5f0c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -7,7 +7,7 @@ android {
     ndkVersion '27.2.12479018'
     defaultConfig {
         applicationId = 'com.tutpro.baresip'
-        minSdkVersion 23
+        minSdkVersion 28
         targetSdkVersion 35
         versionCode = 405
         versionName = '61.1.0'
diff --git a/app/src/main/assets/config.static b/app/src/main/assets/config.static
index fdb3f400..bd0a85d9 100644
--- a/app/src/main/assets/config.static
+++ b/app/src/main/assets/config.static
@@ -2,9 +2,9 @@ poll_method epoll
 call_local_timeout 120
 call_max_calls 4
 call_hold_other_calls yes
-audio_player opensles,nil
-audio_source opensles,nil
-audio_alert opensles,nil
+audio_player aaudio,nil
+audio_source aaudio,nil
+audio_alert aaudio,nil
 audio_level no
 ausrc_format s16
 auplay_format s16
@@ -19,7 +19,7 @@ audio_jitter_buffer_delay 0-20
 rtp_stats yes
 rtp_timeout 60
 rtp_rxmode thread
-module opensles.so
+module aaudio.so
 module stun.so
 module turn.so
 module ice.so
diff --git a/app/src/main/cpp/CMakeLists.txt b/app/src/main/cpp/CMakeLists.txt
index b6c90be0..f56903b4 100644
--- a/app/src/main/cpp/CMakeLists.txt
+++ b/app/src/main/cpp/CMakeLists.txt
@@ -75,7 +75,7 @@ add_definitions(-DHAVE_PTHREAD)
 
 target_link_libraries(baresip
         android
-        OpenSLES
+        aaudio
         lib_baresip
         lib_re
         lib_ssl
diff --git a/app/src/main/cpp/baresip.c b/app/src/main/cpp/baresip.c
index 63a599c0..a51cfbec 100644
--- a/app/src/main/cpp/baresip.c
+++ b/app/src/main/cpp/baresip.c
@@ -246,6 +246,14 @@ static void event_handler(enum ua_event ev, struct bevent *event, void *arg)
                 len = re_snprintf(event_buf, sizeof event_buf, "sndfile dump,%r", &data);
                 break;
             }
+            if (!pl_strcmp(&module_event, "player sessionid")) {
+                len = re_snprintf(event_buf, sizeof event_buf, "player sessionid,%r", &data);
+                break;
+            }
+            if (!pl_strcmp(&module_event, "recorder sessionid")) {
+                len = re_snprintf(event_buf, sizeof event_buf, "recorder sessionid,%r", &data);
+                break;
+            }
         default:
             return;
     }
diff --git a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
index b8720b08..5a58d84d 100644
--- a/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
+++ b/app/src/main/kotlin/com/tutpro/baresip/BaresipService.kt
@@ -18,6 +18,9 @@ import android.media.*
 import android.media.AudioManager.MODE_IN_COMMUNICATION
 import android.media.AudioManager.MODE_NORMAL
 import android.media.AudioManager.RINGER_MODE_SILENT
+import android.media.audiofx.AcousticEchoCanceler
+import android.media.audiofx.AutomaticGainControl
+import android.media.audiofx.NoiseSuppressor
 import android.net.*
 import android.net.wifi.WifiManager
 import android.os.*
@@ -70,6 +73,7 @@ class BaresipService: Service() {
     private lateinit var bluetoothReceiver: BroadcastReceiver
     private lateinit var hotSpotReceiver: BroadcastReceiver
     private lateinit var androidContactsObserver: ContentObserver
+
     private lateinit var stopState: String
     private lateinit var quitTimer: CountDownTimer
 
@@ -625,6 +629,36 @@ class BaresipService: Service() {
             return
         }
 
+        if (ev[0] == "player sessionid") {
+            val sessionId = ev[1].toInt()
+            Log.d(TAG, "got player sessionid $sessionId")
+            return
+        }
+
+        if (ev[0] == "recorder sessionid") {
+            val sessionId = ev[1].toInt()
+            Log.d(TAG, "got recorder sessionid $sessionId")
+            if (AcousticEchoCanceler.isAvailable()) {
+                Log.i(TAG, "AcousticEchoCanceler IS available")
+                AcousticEchoCanceler.create(sessionId)
+            } else {
+                Log.i(TAG, "AcousticEchoCanceler IS NOT available")
+            }
+            if (AutomaticGainControl.isAvailable()) {
+                Log.i(TAG, "AutomaticGainControl IS available")
+                AutomaticGainControl.create(sessionId)
+            } else {
+                Log.i(TAG, "AutomaticGainControl IS NOT available")
+            }
+            if (NoiseSuppressor.isAvailable()) {
+                Log.i(TAG, "NoiseSuppressor IS available")
+                NoiseSuppressor.create(sessionId)
+            } else {
+                Log.i(TAG, "NoiseSuppressor IS NOT available")
+            }
+            return
+        }
+
         val ua = UserAgent.ofUap(uap)
         if (ua == null) {
             Log.w(TAG, "uaEvent $event did not find ua $uap")