Better protection of device locked with secure keyguard

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

@@ -103,5 +103,12 @@ class Call(val callp: String, val ua: UserAgent, val peerUri: String, val dir: S
             return null
         }
 
+        fun isIncoming(): Boolean {
+            for (call in BaresipService.calls)
+                if (call.status == "incoming")
+                    return true
+            return false
+        }
+
     }
 }