diff --git a/gui/main.js b/gui/main.js
index 9feafaa4..990cbf8a 100644
--- a/gui/main.js
+++ b/gui/main.js
@@ -668,6 +668,11 @@ ipcMain.on('request-show-arq-toast-session-connecting',(event,data)=>{
     win.webContents.send('action-show-arq-toast-session-connecting', data);
 });
 
+// ARQ SESSION WAITING
+ipcMain.on('request-show-arq-toast-session-waiting',(event,data)=>{
+    win.webContents.send('action-show-arq-toast-session-waiting', data);
+});
+
 // ARQ SESSION CONNECTED
 ipcMain.on('request-show-arq-toast-session-connected',(event,data)=>{
     win.webContents.send('action-show-arq-toast-session-connected', data);
diff --git a/gui/preload-main.js b/gui/preload-main.js
index 9fef1e41..acc876b9 100644
--- a/gui/preload-main.js
+++ b/gui/preload-main.js
@@ -2284,15 +2284,15 @@ ipcRenderer.on('action-show-arq-toast-transmission-received', (event, data) => {
 ipcRenderer.on('action-show-arq-toast-transmission-receiving', (event, data) => {
 
     document.getElementById("transmission_progress").className = "progress-bar progress-bar-striped progress-bar-animated bg-primary";
-    var toastARQreceiving = document.getElementById('toastARQreceiving');
-    var toast = bootstrap.Toast.getOrCreateInstance(toastARQreceiving); // Returns a Bootstrap toast instance
+    var toastARQsessionreceiving = document.getElementById('toastARQreceiving');
+    var toast = bootstrap.Toast.getOrCreateInstance(toastARQsessionreceiving); // Returns a Bootstrap toast instance
     toast.show();
 });
 
 // ARQ SESSION CONNECTING
 ipcRenderer.on('action-show-arq-toast-session-connecting', (event, data) => {
 
-    var toastARQreceiving = document.getElementById('toastARQsessionconnecting');
+    var toastARQsessionconnecting = document.getElementById('toastARQsessionconnecting');
     var toast = bootstrap.Toast.getOrCreateInstance(toastARQsessionconnecting); // Returns a Bootstrap toast instance
     toast.show();
 });
@@ -2300,15 +2300,24 @@ ipcRenderer.on('action-show-arq-toast-session-connecting', (event, data) => {
 // ARQ SESSION CONNECTED
 ipcRenderer.on('action-show-arq-toast-session-connected', (event, data) => {
 
-    var toastARQreceiving = document.getElementById('toastARQsessionconnected');
+    var toastARQsessionconnected = document.getElementById('toastARQsessionconnected');
     var toast = bootstrap.Toast.getOrCreateInstance(toastARQsessionconnected); // Returns a Bootstrap toast instance
     toast.show();
 });
 
+// ARQ SESSION CONNECTED
+ipcRenderer.on('action-show-arq-toast-session-waiting', (event, data) => {
+
+    var toastARQsessionwaiting = document.getElementById('toastARQsessionwaiting');
+    var toast = bootstrap.Toast.getOrCreateInstance(toastARQsessionwaiting); // Returns a Bootstrap toast instance
+    toast.show();
+});
+
+
 // ARQ SESSION CLOSE
 ipcRenderer.on('action-show-arq-toast-session-close', (event, data) => {
 
-    var toastARQreceiving = document.getElementById('toastARQsessionclose');
+    var toastARQsessionclose = document.getElementById('toastARQsessionclose');
     var toast = bootstrap.Toast.getOrCreateInstance(toastARQsessionclose); // Returns a Bootstrap toast instance
     toast.show();
 });
@@ -2316,7 +2325,7 @@ ipcRenderer.on('action-show-arq-toast-session-close', (event, data) => {
 // ARQ SESSION FAILED
 ipcRenderer.on('action-show-arq-toast-session-failed', (event, data) => {
 
-    var toastARQreceiving = document.getElementById('toastARQsessionfailed');
+    var toastARQsessionfailed = document.getElementById('toastARQsessionfailed');
     var toast = bootstrap.Toast.getOrCreateInstance(toastARQsessionfailed); // Returns a Bootstrap toast instance
     toast.show();
 });
diff --git a/gui/sock.js b/gui/sock.js
index 3268849f..bf2076b0 100644
--- a/gui/sock.js
+++ b/gui/sock.js
@@ -305,6 +305,10 @@ client.on('data', function(socketdata) {
                     } else if (data['status'] == 'connected') {
                         ipcRenderer.send('request-show-arq-toast-session-connected', {data: [data]});
 
+                    // ARQ OPENING
+                    } else if (data['status'] == 'waiting') {
+                        ipcRenderer.send('request-show-arq-toast-session-waiting', {data: [data]});
+
                     // ARQ OPENING
                     } else if (data['status'] == 'close') {
                         ipcRenderer.send('request-show-arq-toast-session-close', {data: [data]});
diff --git a/gui/src/index.html b/gui/src/index.html
index 5ddcbd26..880e7965 100644
--- a/gui/src/index.html
+++ b/gui/src/index.html
@@ -231,6 +231,13 @@
 						<button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast" aria-label="Close"></button>
 					</div>
 				</div>
+				<!-- ARQ SESSION WAITING-->
+				<div class="toast align-items-center text-white bg-warning border-0" id="toastARQsessionwaiting" role="alert" aria-live="assertive" aria-atomic="true">
+					<div class="d-flex">
+						<div class="toast-body">CHANNEL BUSY - Waiting...</div>
+						<button type="button" class="btn-close btn-close-white me-2 m-auto" data-bs-dismiss="toast" aria-label="Close"></button>
+					</div>
+				</div>
 				<!-- ARQ SESSION CLOSE-->
 				<div class="toast align-items-center text-white bg-success border-0" id="toastARQsessionclose" role="alert" aria-live="assertive" aria-atomic="true">
 					<div class="d-flex">
diff --git a/tnc/data_handler.py b/tnc/data_handler.py
index 94910d95..1ba57901 100644
--- a/tnc/data_handler.py
+++ b/tnc/data_handler.py
@@ -1293,6 +1293,32 @@ class DATA:
             state=static.ARQ_SESSION_STATE,
         )
 
+        # Let's check if we have a busy channel
+        if static.CHANNEL_BUSY:
+            self.log.warning("[TNC] Channel busy, waiting until free...")
+            self.send_data_to_socket_queue(
+                freedata="tnc-message",
+                arq="session",
+                status="waiting",
+            )
+
+            # wait while timeout not reached and our busy state is busy
+            channel_busy_timeout = time.time() + 30
+            while static.CHANNEL_BUSY and time.time() < channel_busy_timeout:
+                time.sleep(0.01)
+
+            # if channel busy timeout reached stop connecting
+            if time.time() > channel_busy_timeout:
+                self.log.warning("[TNC] Channel busy, try again later...")
+                static.ARQ_SESSION_STATE = "failed"
+                self.send_data_to_socket_queue(
+                    freedata="tnc-message",
+                    arq="session",
+                    status="failed",
+                    reason="busy",
+                )
+                return False
+
         self.open_session()
 
         # wait until data channel is open
@@ -1596,7 +1622,7 @@ class DATA:
         # for calculating transmission statistics
         # static.ARQ_COMPRESSION_FACTOR = len(data_out) / len(zlib.compress(data_out))
 
-        # Let's check if we have a busy channel and we are not in a running arq session.
+        # Let's check if we have a busy channel and if we are not in a running arq session.
         if static.CHANNEL_BUSY and not static.ARQ_SESSION:
             self.log.warning("[TNC] Channel busy, waiting until free...")
             self.send_data_to_socket_queue(
@@ -1606,9 +1632,22 @@ class DATA:
             )
 
             # wait while timeout not reached and our busy state is busy
-            while static.CHANNEL_BUSY and not self.datachannel_timeout:
+            channel_busy_timeout = time.time() + 30
+            while static.CHANNEL_BUSY and time.time() < channel_busy_timeout:
                 time.sleep(0.01)
 
+            # if channel busy timeout reached, stop connecting
+            if time.time() > channel_busy_timeout:
+                self.log.warning("[TNC] Channel busy, try again later...")
+                static.ARQ_SESSION_STATE = "failed"
+                self.send_data_to_socket_queue(
+                    freedata="tnc-message",
+                    arq="transmission",
+                    status="failed",
+                    reason="busy",
+                )
+                return False
+
         self.arq_open_data_channel(mode, n_frames_per_burst, mycallsign)
 
         # wait until data channel is open
diff --git a/tnc/sock.py b/tnc/sock.py
index 6699ce94..e818d3b3 100644
--- a/tnc/sock.py
+++ b/tnc/sock.py
@@ -335,7 +335,7 @@ def process_tnc_commands(data):
             try:
                 DATA_QUEUE_TRANSMIT.put(["DISCONNECT"])
 
-                # set early disconnecting state so we can interrupt connection attemtps
+                # set early disconnecting state so we can interrupt connection attempts
                 static.ARQ_SESSION_STATE = "disconnecting"
                 command_response("disconnect", True)
             except Exception as err: