diff --git a/tnc/modem.py b/tnc/modem.py
index dbf0e75e..eab2d6bf 100644
--- a/tnc/modem.py
+++ b/tnc/modem.py
@@ -693,22 +693,16 @@ class RF:
         # Release our mod_out_lock, so we can use the queue
         self.mod_out_locked = False
 
-        # we need to wait manually for tci processing
-        if static.AUDIO_ENABLE_TCI:
-
-            duration = len(txbuffer_out) / 8000
-            timestamp_to_sleep = time.time() + (duration)
-            self.log.debug("[MDM] TCI calculated duration", duration=duration)
-            while time.time() < timestamp_to_sleep:
-                threading.Event().wait(0.01)
-        else:
-            timestamp_to_sleep = time.time()
-
-        while self.modoutqueue and time.time() < timestamp_to_sleep:
+        while self.modoutqueue:
             threading.Event().wait(0.01)
             # if we're transmitting FreeDATA signals, reset channel busy state
             static.CHANNEL_BUSY = False
 
+        # wait until tci protocol released tx state
+        if static.AUDIO_ENABLE_TCI:
+            while not self.tci_module.get_tx_enable():
+                threading.Event().wait(0.01)
+
         static.PTT_STATE = self.radio.set_ptt(False)
 
         # Push ptt state to socket stream
diff --git a/tnc/tci.py b/tnc/tci.py
index eb5da6e2..d9326d80 100644
--- a/tnc/tci.py
+++ b/tnc/tci.py
@@ -46,6 +46,8 @@ class TCI:
         self.meter = None
         self.level = None
         self.ptt = None
+        self.tx_enable = False
+
 
     def connect(self):
         self.log.info(
@@ -74,6 +76,10 @@ class TCI:
             self.ws.send('audio_stream_samples:1200;')
             self.ws.send('audio_start:0;')
 
+        if message == "tx_enable:1,true":
+            self.tx_enable = True
+            self.set_ptt(False)
+
         # tx chrono frame
         if len(message) in {64}:
             receiver = message[:4]
@@ -315,6 +321,9 @@ class TCI:
         self.ws.send(f'trx:0;')
         return self.ptt
 
+    def get_tx_enable(self):
+        """ """
+        return self.tx_enable
     def close_rig(self):
         """ """
         return