diff --git a/reflector/DVFramePacket.h b/reflector/DVFramePacket.h
index 8a7cc6c..11c10bb 100644
--- a/reflector/DVFramePacket.h
+++ b/reflector/DVFramePacket.h
@@ -56,7 +56,6 @@ public:
 
 	// identity
 	bool IsDvFrame(void) const           { return true; }
-	bool HasTranscodableData(void) const { return true; }
 
 	// get
 	const STCPacket *GetCodecPacket() const { return &m_TCPack; }
diff --git a/reflector/Packet.cpp b/reflector/Packet.cpp
index 71e03a6..fa8bbfa 100644
--- a/reflector/Packet.cpp
+++ b/reflector/Packet.cpp
@@ -46,7 +46,7 @@ CPacket::CPacket(uint16_t sid, uint8_t dstarpid)
 	m_uiYsfPacketId = 0xFF;
 	m_uiYsfPacketSubId = 0xFF;
 	m_uiYsfPacketFrameId = 0xFF;
-	m_uiM17FrameNumber = 0x8000U;
+	m_uiM17FrameNumber = 0xFFFFFFFFU;
 	m_cModule = ' ';
 	m_eOrigin = EOrigin::local;
 	m_eCodecIn = ECodecType::dstar;
@@ -63,7 +63,7 @@ CPacket::CPacket(uint16_t sid, uint8_t dmrpid, uint8_t dmrspid, bool lastpacket)
 	m_uiYsfPacketId = 0xFF;
 	m_uiYsfPacketSubId = 0xFF;
 	m_uiYsfPacketFrameId = 0xFF;
-	m_uiM17FrameNumber = 0x8000U;
+	m_uiM17FrameNumber = 0xFFFFFFFFU;
 	m_cModule = ' ';
 	m_eOrigin = EOrigin::local;
 	m_eCodecIn = ECodecType::dmr;
@@ -80,7 +80,7 @@ CPacket::CPacket(uint16_t sid, uint8_t ysfpid, uint8_t ysfsubpid, uint8_t ysffri
 	m_uiDstarPacketId = 0xFF;
 	m_uiDmrPacketId = 0xFF;
 	m_uiDmrPacketSubid = 0xFF;
-	m_uiM17FrameNumber = 0x8000U;
+	m_uiM17FrameNumber = 0xFFFFFFFFU;
 	m_cModule = ' ';
 	m_eOrigin = EOrigin::local;
 	m_eCodecIn = ECodecType::dmr;
@@ -97,7 +97,7 @@ CPacket::CPacket(uint16_t sid, uint8_t dstarpid, uint8_t dmrpid, uint8_t dmrsubp
 	m_uiYsfPacketId = ysfpid;
 	m_uiYsfPacketSubId = ysfsubpid;
 	m_uiYsfPacketFrameId = ysffrid;
-	m_uiM17FrameNumber = 0x8000U;
+	m_uiM17FrameNumber = 0xFFFFFFFFU;
 	m_cModule = ' ';
 	m_eOrigin = EOrigin::local;
 	m_eCodecIn = codecIn;
@@ -115,7 +115,7 @@ CPacket::CPacket(const CM17Packet &m17) : CPacket()
 	m_uiYsfPacketSubId = 0xFF;
 	m_uiYsfPacketFrameId = 0xFF;
 	m_eCodecIn = (0x6U == (0x6U & m17.GetFrameType())) ? ECodecType::c2_1600 : ECodecType::c2_3200;
-	m_uiM17FrameNumber = 0x7FFFU & m17.GetFrameNumber();
+	m_uiM17FrameNumber = 0xFFFFU & m17.GetFrameNumber();
 	m_bLastPacket = m17.IsLastPacket();
 }
 
@@ -148,10 +148,10 @@ void CPacket::UpdatePids(const uint32_t pid)
 		m_uiYsfPacketFrameId = ((pid / 5) & 0x7FU) << 1;
 	}
 	// m17 needs update?
-	if (m_uiM17FrameNumber == 0x8000U)
+	if (m_uiM17FrameNumber == 0xFFFFFFFFU)
 	{
 		// frames are every 20 milliseconds, so the m17 data will come every 40 milliseconds
-		m_uiM17FrameNumber = (pid % 2) % 0x7FFFU;
+		m_uiM17FrameNumber = (pid / 2) % 0x8000U;
 	}
 
 	// set the Is Second member used for M17 clients
diff --git a/reflector/Packet.h b/reflector/Packet.h
index 1fdc801..ac2a469 100644
--- a/reflector/Packet.h
+++ b/reflector/Packet.h
@@ -45,7 +45,6 @@ public:
 	// identity
 	virtual bool IsDvHeader(void) const          { return false; }
 	virtual bool IsDvFrame(void) const           { return false; }
-	virtual bool HasTranscodableData(void) const { return false; }
 	bool IsLastPacket(void) const                { return m_bLastPacket; }
 
 	// get
@@ -79,7 +78,7 @@ protected:
 	bool       m_bIsSecond;
 	char       m_cModule;
 	uint16_t   m_uiStreamId;
-	uint16_t   m_uiM17FrameNumber;
+	uint32_t   m_uiM17FrameNumber;
 	uint8_t    m_uiDstarPacketId;
 	uint8_t    m_uiDmrPacketId;
 	uint8_t    m_uiDmrPacketSubid;
diff --git a/reflector/PacketStream.cpp b/reflector/PacketStream.cpp
index 4a52020..4571f34 100644
--- a/reflector/PacketStream.cpp
+++ b/reflector/PacketStream.cpp
@@ -87,9 +87,10 @@ void CPacketStream::Push(std::unique_ptr<CPacket> Packet)
 {
 	// update stream dependent packet data
 	m_LastPacketTime.start();
-	Packet->UpdatePids(m_uiPacketCntr);
 	if (Packet->IsDvFrame())
-		m_uiPacketCntr++;
+	{
+		Packet->UpdatePids(m_uiPacketCntr++);
+	}
 	// transcoder avaliable ?
 #ifdef TRANSCODED_MODULES
 	if ( m_CodecStream != nullptr )
@@ -98,7 +99,7 @@ void CPacketStream::Push(std::unique_ptr<CPacket> Packet)
 		m_CodecStream->Lock();
 		{
 			// transcoder ready & frame need transcoding ?
-			if (Packet->HasTranscodableData())
+			if (Packet->IsDvFrame())
 			{
 				// yes, push packet to trancoder queue
 				// trancoder will push it after transcoding
@@ -107,7 +108,7 @@ void CPacketStream::Push(std::unique_ptr<CPacket> Packet)
 			}
 			else
 			{
-				// no, just bypass tarnscoder
+				// no, just bypass transcoder
 				push(Packet);
 			}
 		}