diff --git a/DMRSlot.cpp b/DMRSlot.cpp
index 81ede4a..78708e0 100644
--- a/DMRSlot.cpp
+++ b/DMRSlot.cpp
@@ -153,7 +153,6 @@ void CDMRSlot::writeModem(unsigned char *data)
 				return;
 			}
 
-			did = lc->getDstId();
 			// true sets allow greater than 4k. Need to add boolean in conf for this later.
 			if (!DstIdWhitelist(did, m_slotNo, true)) {
 				LogMessage("DMR Slot %u, invalid access attempt to TG%u (TG not in whitelist)", m_slotNo, did);
@@ -162,6 +161,7 @@ void CDMRSlot::writeModem(unsigned char *data)
 			}
 
 			m_queue.clear();
+			m_modem->writeDMRAbort(m_slotNo);
 
 			m_rfLC = lc;
 
@@ -518,7 +518,6 @@ void CDMRSlot::writeModem(unsigned char *data)
 					return;
 				}
 
-				did = lc->getDstId();
 				// true sets allow greater than 4k. Need to add boolean in conf for this later.
 				if (!DstIdWhitelist(did, m_slotNo, true)) {
 					LogMessage("DMR Slot %u, invalid access attempt to TG%u (TG not in whitelist)", m_slotNo, did);
@@ -527,6 +526,7 @@ void CDMRSlot::writeModem(unsigned char *data)
 				}
 
 				m_queue.clear();
+				m_modem->writeDMRAbort(m_slotNo);
 
 				m_rfLC = lc;
 
@@ -807,6 +807,7 @@ void CDMRSlot::writeNetwork(const CDMRData& dmrData)
 		}
 
 		m_queue.clear();
+		m_modem->writeDMRAbort(m_slotNo);
 
 		// Store the LC for the embedded LC
 		m_netEmbeddedLC.setData(*m_netLC);
@@ -1033,8 +1034,9 @@ void CDMRSlot::writeNetwork(const CDMRData& dmrData)
 				LogMessage("DMR Slot %u, invalid traffic to TG%u (TG not in whitelist) dataType: %s", m_slotNo, did, dataType);
 				return;
 			}
-			
+
 			m_queue.clear();
+			m_modem->writeDMRAbort(m_slotNo);
 
 			m_netTimeoutTimer.start();
 
diff --git a/Modem.cpp b/Modem.cpp
index b635436..84b73c6 100644
--- a/Modem.cpp
+++ b/Modem.cpp
@@ -57,6 +57,7 @@ const unsigned char MMDVM_DMR_DATA2   = 0x1AU;
 const unsigned char MMDVM_DMR_LOST2   = 0x1BU;
 const unsigned char MMDVM_DMR_SHORTLC = 0x1CU;
 const unsigned char MMDVM_DMR_START   = 0x1DU;
+const unsigned char MMDVM_DMR_ABORT   = 0x1EU;
 
 const unsigned char MMDVM_YSF_DATA    = 0x20U;
 const unsigned char MMDVM_YSF_LOST    = 0x21U;
@@ -1035,6 +1036,25 @@ bool CModem::writeDMRStart(bool tx)
 	return m_serial.write(buffer, 4U) == 4;
 }
 
+bool CModem::writeDMRAbort(unsigned int slotNo)
+{
+	if (slotNo == 1U)
+		m_txDMRData1.clear();
+	else
+		m_txDMRData2.clear();
+
+	unsigned char buffer[4U];
+
+	buffer[0U] = MMDVM_FRAME_START;
+	buffer[1U] = 4U;
+	buffer[2U] = MMDVM_DMR_ABORT;
+	buffer[3U] = slotNo;
+
+	// CUtils::dump(1U, "Written", buffer, 4U);
+
+	return m_serial.write(buffer, 4U) == 4;
+}
+
 bool CModem::writeDMRShortLC(const unsigned char* lc)
 {
 	assert(lc != NULL);
diff --git a/Modem.h b/Modem.h
index 4655d54..6dce045 100644
--- a/Modem.h
+++ b/Modem.h
@@ -64,6 +64,7 @@ public:
 
 	bool writeDMRStart(bool tx);
 	bool writeDMRShortLC(const unsigned char* lc);
+	bool writeDMRAbort(unsigned int slotNo);
 
 	bool setMode(unsigned char mode);