diff --git a/src/window/phone/index.tsx b/src/window/phone/index.tsx
index 3db865e..dd3cd3a 100644
--- a/src/window/phone/index.tsx
+++ b/src/window/phone/index.tsx
@@ -309,18 +309,24 @@ export const Phone = ({
         unregisteredReasonRef.current = "";
       }
       setStatus("disconnected");
-      if (isRestartRef.current) {
-        createSipClient();
-        isRestartRef.current = false;
+      setIsOnline(false);
+      setIsSwitchingUserStatus(false);
+      if (sipUA.current) {
+        sipUA.current.stop();
       }
 
       if (args.error) {
         toast({
-          title: `Cannot connect to ${sipServerAddress}, ${args.reason}`,
+          title: `Cannot connect to ${sipServerAddress}${
+            args.reason ? `, ${args.reason}` : ""
+          }`,
           status: "warning",
           duration: DEFAULT_TOAST_DURATION,
           isClosable: true,
         });
+      } else if (isRestartRef.current) {
+        createSipClient();
+        isRestartRef.current = false;
       }
     });
     // Call Status