diff --git a/app.js b/app.js
index 702eb14..5707a3f 100644
--- a/app.js
+++ b/app.js
@@ -92,10 +92,21 @@ worker = createWorker();
 // https://github.com/versatica/mediasoup/blob/v3/src/supportedRtpCapabilities.ts
 const mediaCodecs = [
   {
-    kind: 'audio',
-    mimeType: 'audio/opus',
+    // kind: 'audio',
+    // mimeType: 'audio/opus',
+    // clockRate: 48000,
+    // channels: 2,
     clockRate: 48000,
-    channels: 2,
+		mimeType: "audio/opus",
+		parameters: {
+			minptime: 10,
+			useinbandfec: 1
+		},
+		payloadType: 111,
+		rtcpFeedback: [{
+      parameter: "",
+      type: "transport-cc"
+		}]
   },
   {
     kind: 'video',