diff --git a/src/com/android/services/telephony/TelephonyConnection.java b/src/com/android/services/telephony/TelephonyConnection.java
index 71e4cae..73bfe8c 100644
--- a/src/com/android/services/telephony/TelephonyConnection.java
+++ b/src/com/android/services/telephony/TelephonyConnection.java
@@ -420,6 +420,9 @@
     protected int buildConnectionCapabilities() {
         int callCapabilities = 0;
         if (isImsConnection()) {
+            if (mOriginalConnection.isIncoming()) {
+                callCapabilities |= CAPABILITY_SPEED_UP_MT_AUDIO;
+            }
             callCapabilities |= CAPABILITY_SUPPORT_HOLD;
             if (getState() == STATE_ACTIVE || getState() == STATE_HOLDING) {
                 callCapabilities |= CAPABILITY_HOLD;