diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/TelecomCallManager.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/TelecomCallManager.kt
index 2d161ca3b..aab9abc8c 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/TelecomCallManager.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/TelecomCallManager.kt
@@ -61,6 +61,7 @@ object TelecomCallManager {
 
     /** Инициализация из ChatApplication.onCreate: регистрирует PhoneAccount. Идемпотентно. */
     fun init() {
+        checkMain()
         if (ready) return
         try {
             val ctx = ChatApplication.instance
@@ -129,6 +130,7 @@ object TelecomCallManager {
     /* ── реестр Connection (вызывается из UtunConnectionService) ── */
 
     fun registerConnection(callId: Long, conn: UtunConnection): Boolean {
+        checkMain()
         val st = CallController.state.value
         if (st == null || st.callId != callId || !st.ongoing) {
             LogManager.addLog("WARN", TAG, "late connection for ended/stale call id=$callId current=${st?.callId}")
@@ -173,14 +175,17 @@ object TelecomCallManager {
     /* ── управление состоянием из контроллера ── */
 
     fun setRinging(callId: Long) {
+        checkMain()
         try { connections[callId]?.markRinging() } catch (e: Exception) { LogManager.addLog("ERROR", TAG, "ringing state failed id=$callId: $e") }
     }
 
     fun setActive(callId: Long) {
+        checkMain()
         try { connections[callId]?.markActive() } catch (e: Exception) { LogManager.addLog("ERROR", TAG, "active state failed id=$callId: $e") }
     }
 
     fun setDisconnected(callId: Long, reason: Int) {
+        checkMain()
         val conn = connections[callId] ?: return
         reasons[conn] = reason
         try { conn.markDisconnected(reason); disconnected.add(conn) } catch (e: Exception) {
@@ -189,6 +194,7 @@ object TelecomCallManager {
     }
 
     fun removeConnection(callId: Long) {
+        checkMain()
         val conn = connections.remove(callId)
         if (conn != null) retire(callId, conn, reasons[conn] ?: 0) else cleanupConnections()
         LogManager.addLog("DEBUG", TAG, "connection removed id=0x%016x".format(callId))
@@ -218,6 +224,11 @@ object TelecomCallManager {
 
     /* ── helpers ── */
 
+    private fun checkMain() = check(Looper.myLooper() == Looper.getMainLooper()) {
+        LogManager.addLog("ERROR", TAG, "Telecom owner mutation outside main")
+        "Telecom owner mutation requires main"
+    }
+
     private fun telecomManager(): TelecomManager? {
         if (!ready) { LogManager.addLog("WARN", TAG, "Telecom request before account registration"); return null }
         return try {
diff --git a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/UtunConnectionService.kt b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/UtunConnectionService.kt
index e7729071e..c88342757 100644
--- a/tools/chatgui-android/app/src/main/java/com/utun/chat/data/UtunConnectionService.kt
+++ b/tools/chatgui-android/app/src/main/java/com/utun/chat/data/UtunConnectionService.kt
@@ -16,13 +16,13 @@ import android.telecom.DisconnectCause
 class UtunConnectionService : ConnectionService() {
 
     override fun onCreateIncomingConnectionFailed(account: PhoneAccountHandle?, request: ConnectionRequest?) {
-        val id = request?.extras?.getLong(TelecomCallManager.EXTRA_CALL_ID, 0) ?: 0
+        val id = requestId(request)
         LogManager.addLog("WARN", "UtunConnSvc", "Telecom rejected incoming call id=$id")
         TelecomCallManager.notifyConnectionFailed(id)
     }
 
     override fun onCreateOutgoingConnectionFailed(account: PhoneAccountHandle?, request: ConnectionRequest?) {
-        val id = request?.extras?.getLong(TelecomCallManager.EXTRA_CALL_ID, 0) ?: 0
+        val id = requestId(request)
         LogManager.addLog("WARN", "UtunConnSvc", "Telecom rejected outgoing call id=$id")
         TelecomCallManager.notifyConnectionFailed(id)
     }
@@ -33,6 +33,7 @@ class UtunConnectionService : ConnectionService() {
     ): Connection? {
         val (callId, peerNodeId, name) = parseRequest(request) ?: run {
             LogManager.addLog("WARN", "UtunConnSvc", "onCreateIncomingConnection: bad request extras")
+            TelecomCallManager.notifyConnectionFailed(requestId(request))
             return Connection.createCanceledConnection()
         }
         LogManager.addLog("INFO", "UtunConnSvc",
@@ -46,6 +47,7 @@ class UtunConnectionService : ConnectionService() {
     ): Connection? {
         val (callId, peerNodeId, name) = parseRequest(request) ?: run {
             LogManager.addLog("WARN", "UtunConnSvc", "onCreateOutgoingConnection: bad request extras")
+            TelecomCallManager.notifyConnectionFailed(requestId(request))
             return Connection.createCanceledConnection()
         }
         LogManager.addLog("INFO", "UtunConnSvc",
@@ -64,18 +66,26 @@ class UtunConnectionService : ConnectionService() {
         }
     }
 
-    private fun parseRequest(request: ConnectionRequest?): Triple<Long, Long, String>? {
-        val extras = request?.extras ?: run {
-            LogManager.addLog("WARN", "UtunConnSvc", "connection request has no extras")
-            return null
+    private fun requestId(request: ConnectionRequest?): Long = try {
+        request?.extras?.getLong(TelecomCallManager.EXTRA_CALL_ID, 0) ?: 0
+    } catch (e: Exception) {
+        LogManager.addLog("ERROR", "UtunConnSvc", "connection request ID decode failed: $e"); 0
+    }
+
+    private fun parseRequest(request: ConnectionRequest?): Triple<Long, Long, String>? = try {
+        val extras = request?.extras
+        if (extras == null) {
+            LogManager.addLog("WARN", "UtunConnSvc", "connection request has no extras"); null
+        } else {
+            val callId = extras.getLong(TelecomCallManager.EXTRA_CALL_ID, 0L)
+            val peer = extras.getLong(TelecomCallManager.EXTRA_PEER_NODE_ID, 0L)
+            val name = extras.getString(TelecomCallManager.EXTRA_DISPLAY_NAME) ?: ""
+            if (callId == 0L || peer == 0L) {
+                LogManager.addLog("WARN", "UtunConnSvc", "connection request missing identity id=$callId peer=$peer; keys=${extras.keySet()}")
+                null
+            } else Triple(callId, peer, name)
         }
-        val callId = extras.getLong(TelecomCallManager.EXTRA_CALL_ID, 0L)
-        val peer = extras.getLong(TelecomCallManager.EXTRA_PEER_NODE_ID, 0L)
-        val name = extras.getString(TelecomCallManager.EXTRA_DISPLAY_NAME) ?: ""
-        if (callId == 0L) {
-            LogManager.addLog("WARN", "UtunConnSvc", "connection request missing call ID; keys=${extras.keySet()}")
-            return null
-        }
-        return Triple(callId, peer, name)
+    } catch (e: Exception) {
+        LogManager.addLog("ERROR", "UtunConnSvc", "connection request extras decode failed: $e"); null
     }
 }