Currently mic icon is active only when a call is connected

app/src/main/kotlin/com/tutpro/baresip/MainActivity.kt

@@ -1147,6 +1147,7 @@ class MainActivity : AppCompatActivity() {
         when (item.itemId) {
 
             R.id.micIcon -> {
+                if (Call.call("connected") != null) {
                     BaresipService.isMicMuted = !BaresipService.isMicMuted
                     if (BaresipService.isMicMuted) {
                         item.setIcon(R.drawable.mic_off)
@@ -1156,6 +1157,7 @@ class MainActivity : AppCompatActivity() {
                         Api.calls_mute(false)
                     }
                 }
+            }
 
             R.id.speakerIcon -> {
                 am.isSpeakerphoneOn = !am.isSpeakerphoneOn
@@ -1672,6 +1674,10 @@ class MainActivity : AppCompatActivity() {
             rejectButton.visibility = View.INVISIBLE
             callControl.visibility = View.INVISIBLE
             dialpadButton.isEnabled = true
+            if (BaresipService.isMicMuted) {
+                BaresipService.isMicMuted = false
+                micIcon!!.setIcon(R.drawable.mic_on)
+            }
         } else {
             swipeRefresh.isEnabled = false
             val call = Call.uaCalls(ua, "")[0]