Index: firmware/App/Modes/TreatmentEnd.c
===================================================================
diff -u -r3d5a2ff09f3f4983699bfc61c7b63df1732970e0 -r8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72
--- firmware/App/Modes/TreatmentEnd.c	(.../TreatmentEnd.c)	(revision 3d5a2ff09f3f4983699bfc61c7b63df1732970e0)
+++ firmware/App/Modes/TreatmentEnd.c	(.../TreatmentEnd.c)	(revision 8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72)
@@ -22,6 +22,7 @@
 #include "DialOutFlow.h"
 #include "ModeTreatment.h"
 #include "OperationModes.h"
+#include "SystemCommMessages.h"
 #include "TaskGeneral.h"
 #include "TreatmentStop.h"
 #include "Valves.h"
@@ -321,7 +322,7 @@
  * @param action User action requested
  * @return none
  *************************************************************************/
-void signalTreatmentEndUserAction( REQUESTED_TREATMENT_RECIRC_USER_ACTIONS_T action )
+void signalTreatmentEndUserAction( REQUESTED_TREATMENT_END_USER_ACTIONS_T action )
 {
     BOOL accepted = FALSE;
     REQUEST_REJECT_REASON_CODE_T rejReason = REQUEST_REJECT_REASON_NONE;
@@ -346,7 +347,7 @@
     }
 
     // Respond to user action request
-    sendRinsebackCmdResponse( accepted, (U32)rejReason );
+    sendTreatmentEndCmdResponse( accepted, (U32)rejReason );
 }
 
 /*********************************************************************//**
Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -r49dba1e95bb3763b4c150e7a80b84a65264a7ca8 -r8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 49dba1e95bb3763b4c150e7a80b84a65264a7ca8)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72)
@@ -1203,6 +1203,10 @@
             handleTreatmentRecircCmd( message );
             break;
 
+        case MSG_ID_UI_TX_END_CMD:
+            handleTreatmentEndCmd( message );
+            break;
+
         case MSG_ID_TESTER_LOGIN_REQUEST:
             handleTesterLogInRequest( message );
             break;
Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -r1b27784f400d03678a1441cd70ab1c4111bbfa04 -r8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 1b27784f400d03678a1441cd70ab1c4111bbfa04)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72)
@@ -33,6 +33,7 @@
 #include "SafetyShutdown.h"
 #include "SystemComm.h"
 #include "SystemCommMessages.h"
+#include "TreatmentEnd.h"
 #include "TreatmentRecirc.h"
 #include "Utilities.h"
 #include "Valves.h"
@@ -2142,6 +2143,63 @@
 
     return result;
 }
+
+/*********************************************************************//**
+ * @brief
+ * The handleTreatmentEndCmd function handles a treatment end user action command
+ * message from the UI.
+ * @details Inputs: none
+ * @details Outputs: message handled
+ * @param message a pointer to the message to handle
+ * @return none
+ *************************************************************************/
+void handleTreatmentEndCmd( MESSAGE_T *message )
+{
+    if ( sizeof(U32) == message->hdr.payloadLen )
+    {
+        U32 cmd;
+
+        memcpy( &cmd, &message->payload[0], sizeof(U32) );
+
+        signalTreatmentEndUserAction( (REQUESTED_TREATMENT_END_USER_ACTIONS_T)cmd );
+    }
+    else
+    {
+        sendAckResponseMsg( (MSG_ID_T)message->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_UI, FALSE );
+    }
+}
+
+/*********************************************************************//**
+ * @brief
+ * The sendTreatmentEndCmdResponse function constructs a treatment end
+ * user action response to the UI and queues the msg for transmit on the
+ * appropriate CAN channel.
+ * @details Inputs: none
+ * @details Outputs: Treatment end command response msg constructed and queued.
+ * @param accepted T/F - was user action accepted?
+ * @param rejReason reason why action was rejected (or zero if accepted)
+ * @return TRUE if msg successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL sendTreatmentEndCmdResponse( BOOL accepted, U32 rejReason )
+{
+    BOOL result;
+    MESSAGE_T msg;
+    U08 *payloadPtr = msg.payload;
+
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_HD_RECIRC_CMD_RESPONSE;
+    msg.hdr.payloadLen = sizeof( BOOL ) + sizeof( U32 );
+
+    memcpy( payloadPtr, &accepted, sizeof( BOOL ) );
+    payloadPtr += sizeof( BOOL );
+    memcpy( payloadPtr, &rejReason, sizeof( U32 ) );
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_2_UI, ACK_REQUIRED );
+
+    return result;
+}
 
 /*********************************************************************//**
  * @brief
Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r1b27784f400d03678a1441cd70ab1c4111bbfa04 -r8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 1b27784f400d03678a1441cd70ab1c4111bbfa04)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 8000e5d68a7a0ed6d1b43d8e6778a246ff0d8e72)
@@ -169,6 +169,12 @@
 // MSG_ID_HD_RECIRC_CMD_RESPONSE
 BOOL sendTreatmentRecircCmdResponse( BOOL accepted, U32 rejReason );
 
+// MSG_ID_UI_TX_END_CMD:
+void handleTreatmentEndCmd( MESSAGE_T *message );
+
+// MSG_ID_HD_RECIRC_CMD_RESPONSE
+BOOL sendTreatmentEndCmdResponse( BOOL accepted, U32 rejReason );
+
 // MSG_ID_SET_DG_DIALYSATE_TEMP_TARGETS
 BOOL sendDialysateTempTargetsToDG( F32 primary, F32 trimmer );