diff --git a/YSFGateway/DTMF.cpp b/YSFGateway/DTMF.cpp
index b0bab45..13557b6 100644
--- a/YSFGateway/DTMF.cpp
+++ b/YSFGateway/DTMF.cpp
@@ -42,27 +42,6 @@ const unsigned char DTMF_FR_SYMD[]     = {0x10U, 0x40U, 0x08U, 0x20U};
 const unsigned char DTMF_FR_SYMS[]     = {0x00U, 0x00U, 0x08U, 0x20U};
 const unsigned char DTMF_FR_SYMH[]     = {0x10U, 0x00U, 0x08U, 0x20U};
 
-const unsigned char DTMF_VD1_MASK[] = { 0x82U, 0x08U, 0x20U, 0x82U, 0x00U, 0x00U, 0x82U, 0x00U, 0x00U };
-const unsigned char DTMF_VD1_SIG[] = { 0x82U, 0x08U, 0x20U, 0x82U, 0x00U, 0x00U, 0x00U, 0x00U, 0x00U };
-
-const unsigned char DTMF_VD1_SYM_MASK[] = { 0x10U, 0x40U, 0x08U, 0x20U };
-const unsigned char DTMF_VD1_SYM0[] = { 0x00U, 0x40U, 0x08U, 0x20U };
-const unsigned char DTMF_VD1_SYM1[] = { 0x00U, 0x00U, 0x00U, 0x00U };
-const unsigned char DTMF_VD1_SYM2[] = { 0x00U, 0x40U, 0x00U, 0x00U };
-const unsigned char DTMF_VD1_SYM3[] = { 0x10U, 0x00U, 0x00U, 0x00U };
-const unsigned char DTMF_VD1_SYM4[] = { 0x00U, 0x00U, 0x00U, 0x20U };
-const unsigned char DTMF_VD1_SYM5[] = { 0x00U, 0x40U, 0x00U, 0x20U };
-const unsigned char DTMF_VD1_SYM6[] = { 0x10U, 0x00U, 0x00U, 0x20U };
-const unsigned char DTMF_VD1_SYM7[] = { 0x00U, 0x00U, 0x08U, 0x00U };
-const unsigned char DTMF_VD1_SYM8[] = { 0x00U, 0x40U, 0x08U, 0x00U };
-const unsigned char DTMF_VD1_SYM9[] = { 0x10U, 0x00U, 0x08U, 0x00U };
-const unsigned char DTMF_VD1_SYMA[] = { 0x10U, 0x40U, 0x00U, 0x00U };
-const unsigned char DTMF_VD1_SYMB[] = { 0x10U, 0x40U, 0x00U, 0x20U };
-const unsigned char DTMF_VD1_SYMC[] = { 0x10U, 0x40U, 0x08U, 0x00U };
-const unsigned char DTMF_VD1_SYMD[] = { 0x10U, 0x40U, 0x08U, 0x20U };
-const unsigned char DTMF_VD1_SYMS[] = { 0x00U, 0x00U, 0x08U, 0x20U };
-const unsigned char DTMF_VD1_SYMH[] = { 0x10U, 0x00U, 0x08U, 0x20U };
-
 const unsigned char DTMF_VD2_MASK[] = { 0xCCU, 0xCCU, 0xDDU, 0xDDU, 0xEEU, 0xEEU, 0xFFU, 0xFFU, 0xEEU, 0xEEU, 0xDDU, 0x99U, 0x98U };
 const unsigned char DTMF_VD2_SIG[]  = { 0x08U, 0x80U, 0xC9U, 0x10U, 0x26U, 0xA0U, 0xE3U, 0x31U, 0xE2U, 0xE6U, 0xD5U, 0x08U, 0x88U };
 
@@ -113,21 +92,6 @@ WX_STATUS CDTMF::decodeVoiceFRMode(const unsigned char* payload, bool end)
 	return WXS_NONE;
 }
 
-WX_STATUS CDTMF::decodeVDMode1(const unsigned char* payload, bool end)
-{
-	assert(payload != NULL);
-
-	payload += YSF_SYNC_LENGTH_BYTES + YSF_FICH_LENGTH_BYTES;
-
-	for (unsigned int offset = 9U; offset < 90U; offset += 18U) {
-		WX_STATUS status = decodeVDMode1Slice(payload + offset, end);
-		if (status != WXS_NONE)
-			return status;
-	}
-
-	return WXS_NONE;
-}
-
 WX_STATUS CDTMF::decodeVDMode2(const unsigned char* payload, bool end)
 {
 	assert(payload != NULL);
@@ -223,90 +187,10 @@ WX_STATUS CDTMF::decodeVoiceFRModeSlice(const unsigned char* ambe, bool end)
 	}
 }
 
-WX_STATUS CDTMF::decodeVDMode1Slice(const unsigned char* ambe, bool end)
-{
-	CUtils::dump(3U, "Voice VD Mode 1", ambe, 9U);
-
-	// DTMF begins with these byte values
-	if (!end && (ambe[0] & DTMF_VD1_MASK[0]) == DTMF_VD1_SIG[0] && (ambe[1] & DTMF_VD1_MASK[1]) == DTMF_VD1_SIG[1] &&
-		(ambe[2] & DTMF_VD1_MASK[2]) == DTMF_VD1_SIG[2] && (ambe[3] & DTMF_VD1_MASK[3]) == DTMF_VD1_SIG[3] &&
-		(ambe[4] & DTMF_VD1_MASK[4]) == DTMF_VD1_SIG[4] && (ambe[5] & DTMF_VD1_MASK[5]) == DTMF_VD1_SIG[5] &&
-		(ambe[6] & DTMF_VD1_MASK[6]) == DTMF_VD1_SIG[6] && (ambe[7] & DTMF_VD1_MASK[7]) == DTMF_VD1_SIG[7] &&
-		(ambe[8] & DTMF_VD1_MASK[8]) == DTMF_VD1_SIG[8]) {
-		unsigned char sym0 = ambe[4] & DTMF_VD1_SYM_MASK[0];
-		unsigned char sym1 = ambe[5] & DTMF_VD1_SYM_MASK[1];
-		unsigned char sym2 = ambe[7] & DTMF_VD1_SYM_MASK[2];
-		unsigned char sym3 = ambe[8] & DTMF_VD1_SYM_MASK[3];
-
-		char c = ' ';
-		if (sym0 == DTMF_VD1_SYM0[0] && sym1 == DTMF_VD1_SYM0[1] && sym2 == DTMF_VD1_SYM0[2] && sym3 == DTMF_VD1_SYM0[3])
-			c = '0';
-		else if (sym0 == DTMF_VD1_SYM1[0] && sym1 == DTMF_VD1_SYM1[1] && sym2 == DTMF_VD1_SYM1[2] && sym3 == DTMF_VD1_SYM1[3])
-			c = '1';
-		else if (sym0 == DTMF_VD1_SYM2[0] && sym1 == DTMF_VD1_SYM2[1] && sym2 == DTMF_VD1_SYM2[2] && sym3 == DTMF_VD1_SYM2[3])
-			c = '2';
-		else if (sym0 == DTMF_VD1_SYM3[0] && sym1 == DTMF_VD1_SYM3[1] && sym2 == DTMF_VD1_SYM3[2] && sym3 == DTMF_VD1_SYM3[3])
-			c = '3';
-		else if (sym0 == DTMF_VD1_SYM4[0] && sym1 == DTMF_VD1_SYM4[1] && sym2 == DTMF_VD1_SYM4[2] && sym3 == DTMF_VD1_SYM4[3])
-			c = '4';
-		else if (sym0 == DTMF_VD1_SYM5[0] && sym1 == DTMF_VD1_SYM5[1] && sym2 == DTMF_VD1_SYM5[2] && sym3 == DTMF_VD1_SYM5[3])
-			c = '5';
-		else if (sym0 == DTMF_VD1_SYM6[0] && sym1 == DTMF_VD1_SYM6[1] && sym2 == DTMF_VD1_SYM6[2] && sym3 == DTMF_VD1_SYM6[3])
-			c = '6';
-		else if (sym0 == DTMF_VD1_SYM7[0] && sym1 == DTMF_VD1_SYM7[1] && sym2 == DTMF_VD1_SYM7[2] && sym3 == DTMF_VD1_SYM7[3])
-			c = '7';
-		else if (sym0 == DTMF_VD1_SYM8[0] && sym1 == DTMF_VD1_SYM8[1] && sym2 == DTMF_VD1_SYM8[2] && sym3 == DTMF_VD1_SYM8[3])
-			c = '8';
-		else if (sym0 == DTMF_VD1_SYM9[0] && sym1 == DTMF_VD1_SYM9[1] && sym2 == DTMF_VD1_SYM9[2] && sym3 == DTMF_VD1_SYM9[3])
-			c = '9';
-		else if (sym0 == DTMF_VD1_SYMA[0] && sym1 == DTMF_VD1_SYMA[1] && sym2 == DTMF_VD1_SYMA[2] && sym3 == DTMF_VD1_SYMA[3])
-			c = 'A';
-		else if (sym0 == DTMF_VD1_SYMB[0] && sym1 == DTMF_VD1_SYMB[1] && sym2 == DTMF_VD1_SYMB[2] && sym3 == DTMF_VD1_SYMB[3])
-			c = 'B';
-		else if (sym0 == DTMF_VD1_SYMC[0] && sym1 == DTMF_VD1_SYMC[1] && sym2 == DTMF_VD1_SYMC[2] && sym3 == DTMF_VD1_SYMC[3])
-			c = 'C';
-		else if (sym0 == DTMF_VD1_SYMD[0] && sym1 == DTMF_VD1_SYMD[1] && sym2 == DTMF_VD1_SYMD[2] && sym3 == DTMF_VD1_SYMD[3])
-			c = 'D';
-		else if (sym0 == DTMF_VD1_SYMS[0] && sym1 == DTMF_VD1_SYMS[1] && sym2 == DTMF_VD1_SYMS[2] && sym3 == DTMF_VD1_SYMS[3])
-			c = '*';
-		else if (sym0 == DTMF_VD1_SYMH[0] && sym1 == DTMF_VD1_SYMH[1] && sym2 == DTMF_VD1_SYMH[2] && sym3 == DTMF_VD1_SYMH[3])
-			c = '#';
-
-		if (c == m_lastChar) {
-			m_pressCount++;
-		} else {
-			m_lastChar = c;
-			m_pressCount = 0U;
-		}
-
-		if (c != ' ' && !m_pressed && m_pressCount >= 3U) {
-			m_data += c;
-			m_releaseCount = 0U;
-			m_pressed = true;
-		}
-
-		return validate();
-	} else {
-		// If it is not a DTMF Code
-		if ((end || m_releaseCount >= 100U) && m_data.length() > 0U) {
-			m_command = m_data;
-			m_data.clear();
-			m_releaseCount = 0U;
-		}
-
-		m_pressed = false;
-		m_releaseCount++;
-		m_pressCount = 0U;
-		m_lastChar = ' ';
-
-		return WXS_NONE;
-	}
-}
-
 WX_STATUS CDTMF::decodeVDMode2Slice(const unsigned char* ambe, bool end)
 {
 	// DTMF begins with these byte values
-	if (!end && (ambe[0] & DTMF_VD2_MASK[0])   == DTMF_VD2_SIG[0]  && (ambe[1] & DTMF_VD2_MASK[1])   == DTMF_VD2_SIG[1] &&
+	if (!end && (ambe[0] & DTMF_VD2_MASK[0]) == DTMF_VD2_SIG[0] && (ambe[1] & DTMF_VD2_MASK[1]) == DTMF_VD2_SIG[1] &&
 		(ambe[2] & DTMF_VD2_MASK[2])   == DTMF_VD2_SIG[2]  && (ambe[3] & DTMF_VD2_MASK[3])   == DTMF_VD2_SIG[3] &&
 		(ambe[4] & DTMF_VD2_MASK[4])   == DTMF_VD2_SIG[4]  && (ambe[5] & DTMF_VD2_MASK[5])   == DTMF_VD2_SIG[5] &&
 		(ambe[6] & DTMF_VD2_MASK[6])   == DTMF_VD2_SIG[6]  && (ambe[7] & DTMF_VD2_MASK[7])   == DTMF_VD2_SIG[7] &&
diff --git a/YSFGateway/DTMF.h b/YSFGateway/DTMF.h
index 1928db1..dce6b52 100644
--- a/YSFGateway/DTMF.h
+++ b/YSFGateway/DTMF.h
@@ -29,7 +29,6 @@ public:
 	~CDTMF();
 
 	WX_STATUS decodeVoiceFRMode(const unsigned char* payload, bool end);
-	WX_STATUS decodeVDMode1(const unsigned char* payload, bool end);
 	WX_STATUS decodeVDMode2(const unsigned char* payload, bool end);
 
 	std::string getReflector();
@@ -45,7 +44,6 @@ private:
 	char         m_lastChar;
 
 	WX_STATUS decodeVoiceFRModeSlice(const unsigned char* ambe, bool end);
-	WX_STATUS decodeVDMode1Slice(const unsigned char* ambe, bool end);
 	WX_STATUS decodeVDMode2Slice(const unsigned char* ambe, bool end);
 	WX_STATUS validate() const;
 };
diff --git a/YSFGateway/YSFGateway.cpp b/YSFGateway/YSFGateway.cpp
index ba41982..f4a6cdb 100644
--- a/YSFGateway/YSFGateway.cpp
+++ b/YSFGateway/YSFGateway.cpp
@@ -312,9 +312,6 @@ int CYSFGateway::run()
 					case YSF_DT_VOICE_FR_MODE:
 						status = m_dtmf->decodeVoiceFRMode(buffer + 35U, (buffer[34U] & 0x01U) == 0x01U);
 						break;
-					case YSF_DT_VD_MODE1:
-						status = m_dtmf->decodeVDMode1(buffer + 35U, (buffer[34U] & 0x01U) == 0x01U);
-						break;
 					case YSF_DT_VD_MODE2:
 						status = m_dtmf->decodeVDMode2(buffer + 35U, (buffer[34U] & 0x01U) == 0x01U);
 						break;