Further changes for IAX based on tracing by Lenny.

2025-12-20 22:45:44 +08:00 · 2024-07-16 16:17:40 +01:00
parent a701536839
commit d290fcd632
6 changed files with 144 additions and 114 deletions
--- a/Conf.cpp
+++ b/Conf.cpp
@@ -290,9 +290,10 @@ m_pocsagNetworkModeHang(3U),
 m_pocsagNetworkDebug(false),
 m_fmNetworkEnabled(false),
 m_fmNetworkProtocol("USRP"),
-m_fmNetworkUsername("Dave"),
-m_fmNetworkPassword("PASSWORD"),
-m_fmNetworkNode("Node1"),
+m_fmNetworkDomain("register.allstarlink.org"),
+m_fmNetworkPassword(),
+m_fmNetworkSource(),
+m_fmNetworkDestination(),
 m_fmNetworkSampleRate(48000U),
 m_fmNetworkSquelchFile(),
 m_fmGatewayAddress(),
@@ -1041,12 +1042,14 @@ bool CConf::read()
 				m_fmNetworkEnabled = ::atoi(value) == 1;
 			else if (::strcmp(key, "Protocol") == 0)
 				m_fmNetworkProtocol = value;
-			else if (::strcmp(key, "Username") == 0)
-				m_fmNetworkUsername = value;
+			else if (::strcmp(key, "Domain") == 0)
+				m_fmNetworkDomain = value;
 			else if (::strcmp(key, "Password") == 0)
 				m_fmNetworkPassword = value;
-			else if (::strcmp(key, "Node") == 0)
-				m_fmNetworkNode = value;
+			else if (::strcmp(key, "Source") == 0)
+				m_fmNetworkSource = value;
+			else if (::strcmp(key, "Destination") == 0)
+				m_fmNetworkDestination = value;
 			else if (::strcmp(key, "SampleRate") == 0)
 				m_fmNetworkSampleRate = (unsigned int)::atoi(value);
 			else if (::strcmp(key, "SquelchFile") == 0)
@@ -2297,9 +2300,9 @@ std::string CConf::getFMNetworkProtocol() const
 	return m_fmNetworkProtocol;
 }

-std::string CConf::getFMNetworkUsername() const
+std::string CConf::getFMNetworkDomain() const
 {
-	return m_fmNetworkUsername;
+	return m_fmNetworkDomain;
 }

 std::string CConf::getFMNetworkPassword() const
@@ -2307,9 +2310,14 @@ std::string CConf::getFMNetworkPassword() const
 	return m_fmNetworkPassword;
 }

-std::string CConf::getFMNetworkNode() const
+std::string CConf::getFMNetworkSource() const
 {
-	return m_fmNetworkNode;
+	return m_fmNetworkSource;
+}
+
+std::string CConf::getFMNetworkDestination() const
+{
+	return m_fmNetworkDestination;
 }

 unsigned int CConf::getFMNetworkSampleRate() const
--- a/Conf.h
+++ b/Conf.h
@@ -303,9 +303,10 @@ public:
  // The FM Network section
  bool         getFMNetworkEnabled() const;
  std::string  getFMNetworkProtocol() const;
-  std::string  getFMNetworkUsername() const;
+  std::string  getFMNetworkDomain() const;
  std::string  getFMNetworkPassword() const;
-  std::string  getFMNetworkNode() const;
+  std::string  getFMNetworkSource() const;
+  std::string  getFMNetworkDestination() const;
  unsigned int getFMNetworkSampleRate() const;
  std::string  getFMNetworkSquelchFile() const;
  std::string  getFMGatewayAddress() const;
@@ -628,9 +629,10 @@ private:

  bool         m_fmNetworkEnabled;
  std::string  m_fmNetworkProtocol;
-  std::string  m_fmNetworkUsername;
+  std::string  m_fmNetworkDomain;
  std::string  m_fmNetworkPassword;
-  std::string  m_fmNetworkNode;
+  std::string  m_fmNetworkSource;
+  std::string  m_fmNetworkDestination;
  unsigned int m_fmNetworkSampleRate;
  std::string  m_fmNetworkSquelchFile;
  std::string  m_fmGatewayAddress;
--- a/FMIAXNetwork.cpp
+++ b/FMIAXNetwork.cpp
@@ -126,20 +126,21 @@ const unsigned int BUFFER_LENGTH = 1500U;
 #define	MD5_DIGEST_STRING_LENGTH	16
 #endif

-CFMIAXNetwork::CFMIAXNetwork(const std::string& callsign, const std::string& username, const std::string& password, const std::string& node, const std::string& localAddress, unsigned short localPort, const std::string& gatewayAddress, unsigned short gatewayPort, bool debug) :
-m_callsign(callsign),
-m_username(username),
+CFMIAXNetwork::CFMIAXNetwork(const std::string& domain, const std::string& password, const std::string& source, const std::string& destination, const std::string& localAddress, unsigned short localPort, const std::string& gatewayAddress, unsigned short gatewayPort, bool debug) :
 m_password(password),
-m_node(node),
+m_source(source),
+m_destination(destination),
 m_socket(localAddress, localPort),
-m_addr(),
-m_addrLen(0U),
+m_domainAddr(),
+m_domainAddrLen(0U),
+m_serverAddr(),
+m_serverAddrLen(0U),
 m_debug(debug),
 m_enabled(false),
 m_buffer(2000U, "FM Network"),
 m_status(IAXS_DISCONNECTED),
 m_retryTimer(1000U, 0U, 500U),
-m_pingTimer(1000U, 20U),
+m_pingTimer(1000U, 2U),
 m_seed(),
 m_timestamp(),
 m_sCallNo(0U),
@@ -159,20 +160,18 @@ m_random()
 , m_provider(0UL)
 #endif
 {
-	assert(!callsign.empty());
-	assert(!username.empty());
+	assert(!domain.empty());
 	assert(!password.empty());
-	assert(!node.empty());
+	assert(!source.empty());
+	assert(!destination.empty());
 	assert(gatewayPort > 0U);
 	assert(!gatewayAddress.empty());

-	if (CUDPSocket::lookup(gatewayAddress, gatewayPort, m_addr, m_addrLen) != 0)
-		m_addrLen = 0U;
+	if (CUDPSocket::lookup(domain, gatewayPort, m_domainAddr, m_domainAddrLen) != 0)
+		m_domainAddrLen = 0U;

-	// Remove any trailing letters in the callsign
-	size_t pos = callsign.find_first_of(' ');
-	if (pos != std::string::npos)
-		m_callsign = callsign.substr(0U, pos);
+	if (CUDPSocket::lookup(gatewayAddress, gatewayPort, m_serverAddr, m_serverAddrLen) != 0)
+		m_serverAddrLen = 0U;

 	std::random_device rd;
 	std::mt19937 mt(rd());
@@ -185,8 +184,13 @@ CFMIAXNetwork::~CFMIAXNetwork()

 bool CFMIAXNetwork::open()
 {
-	if (m_addrLen == 0U) {
-		LogError("Unable to resolve the address of the FM Gateway");
+	if (m_domainAddrLen == 0U) {
+		LogError("Unable to resolve the address of the ASL Registration Server");
+		return false;
+	}
+
+	if (m_serverAddrLen == 0U) {
+		LogError("Unable to resolve the address of the IAX Gateway");
 		return false;
 	}

@@ -199,7 +203,7 @@ bool CFMIAXNetwork::open()
 	}
 #endif

-	bool ret = m_socket.open(m_addr);
+	bool ret = m_socket.open(m_domainAddr);
 	if (!ret)
 		return false;

@@ -291,20 +295,21 @@ void CFMIAXNetwork::clock(unsigned int ms)

 	m_pingTimer.clock(ms);
 	if (m_pingTimer.isRunning() && m_pingTimer.hasExpired()) {
-		writePing();
+		writePing(m_serverAddr, m_serverAddrLen);
 		m_pingTimer.start();
 	}

 	unsigned char buffer[BUFFER_LENGTH];

 	sockaddr_storage addr;
-	unsigned int addrlen;
-	int length = m_socket.read(buffer, BUFFER_LENGTH, addr, addrlen);
+	unsigned int addrLen;
+	int length = m_socket.read(buffer, BUFFER_LENGTH, addr, addrLen);
 	if (length <= 0)
 		return;

 	// Check if the data is for us
-	if (!CUDPSocket::match(addr, m_addr, IMT_ADDRESS_AND_PORT)) {
+	if (!CUDPSocket::match(addr, m_domainAddr, IMT_ADDRESS_AND_PORT) &&
+		!CUDPSocket::match(addr, m_serverAddr, IMT_ADDRESS_AND_PORT)) {
 		LogMessage("FM IAX packet received from an invalid source");
 		return;
 	}
@@ -334,8 +339,8 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
-		writePong(ts);
+		writeAck(addr, addrLen, ts);
+		writePong(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_IAX, IAX_COMMAND_PONG)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -344,7 +349,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_IAX, IAX_COMMAND_CALLTOKEN)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -363,7 +368,7 @@ void CFMIAXNetwork::clock(unsigned int ms)

 		LogMessage("IAX ACCEPT received");

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_status = IAXS_CONNECTED;
 		m_retryTimer.stop();
@@ -377,7 +382,7 @@ void CFMIAXNetwork::clock(unsigned int ms)

 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_status = IAXS_DISCONNECTED;
 		m_keyed = false;
@@ -392,7 +397,7 @@ void CFMIAXNetwork::clock(unsigned int ms)

 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_status = IAXS_DISCONNECTED;
 		m_keyed  = false;
@@ -407,7 +412,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		uint16_t method = getIEUInt16(buffer, length, IAX_IE_AUTHMETHODS);
 		if ((method & IAX_AUTH_MD5) == 0x00U) {
@@ -435,17 +440,15 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_status = IAXS_REGISTERED;
-		m_retryTimer.stop();
-		m_pingTimer.start();

 		writeNew();

 		m_status = IAXS_CONNECTING;
-		m_retryTimer.stop();
-		m_pingTimer.start();
+		m_retryTimer.start();
+		m_pingTimer.stop();
 	} else if (compareFrame(buffer, AST_FRAME_IAX, IAX_COMMAND_HANGUP)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -453,7 +456,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		LogError("Hangup from the IAX gateway");
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_status = IAXS_DISCONNECTED;
 		m_keyed  = false;
@@ -469,7 +472,7 @@ void CFMIAXNetwork::clock(unsigned int ms)

 		LogMessage("IAX ANSWER received");

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_IAX, IAX_COMMAND_VNAK)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -479,7 +482,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_TEXT, 0U)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -488,7 +491,7 @@ void CFMIAXNetwork::clock(unsigned int ms)

 		LogMessage("IAX TEXT received - %.*s", length - 12U, buffer + 12U);

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_IAX, IAX_COMMAND_LAGRQ)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -497,8 +500,8 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeLagRq();
-		writeLagRp(ts);
+		writeLagRq(addr, addrLen);
+		writeLagRp(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_IAX, IAX_COMMAND_LAGRP)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -507,7 +510,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);
 	} else if (compareFrame(buffer, AST_FRAME_CONTROL, AST_CONTROL_KEY)) {
 #if defined(DEBUG_IAX)
 		CUtils::dump(1U, "FM IAX Network Data Received", buffer, length);
@@ -516,7 +519,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_keyed = true;
 	} else if (compareFrame(buffer, AST_FRAME_CONTROL, AST_CONTROL_UNKEY)) {
@@ -527,7 +530,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		m_keyed = false;
 	} else if (compareFrame(buffer, AST_FRAME_VOICE, AST_FORMAT_ULAW)) {
@@ -538,7 +541,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);

 		if (!m_enabled)
 			return;
@@ -564,7 +567,7 @@ void CFMIAXNetwork::clock(unsigned int ms)
 		m_rxFrames++;
 		m_iSeqNo = iSeqNo + 1U;

-		writeAck(ts);
+		writeAck(addr, addrLen, ts);
 	}
 }

@@ -665,9 +668,9 @@ bool CFMIAXNetwork::writeNew()

 	unsigned int pos = 0U;
 	setIEUInt16(buffer, pos, IAX_IE_VERSION,        IAX_PROTO_VERSION);
-	setIEString(buffer, pos, IAX_IE_CALLED_NUMBER,  m_node);
+	setIEString(buffer, pos, IAX_IE_CALLED_NUMBER,  m_destination);
 	setIEString(buffer, pos, IAX_IE_CODEC_PREFS,    "DMLC");
-	setIEString(buffer, pos, IAX_IE_CALLING_NUMBER, m_username);
+	setIEString(buffer, pos, IAX_IE_CALLING_NUMBER, m_source);
 	setIEUInt8(buffer,  pos, IAX_IE_CALLINGPRES,    0U);
 	setIEUInt8(buffer,  pos, IAX_IE_CALLINGTON,     0U);
 	setIEUInt16(buffer, pos, IAX_IE_CALLINGTNS,     0U);
@@ -688,7 +691,7 @@ bool CFMIAXNetwork::writeNew()
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, length);

-	return m_socket.write(buffer, length, m_addr, m_addrLen);
+	return m_socket.write(buffer, length, m_serverAddr, m_serverAddrLen);
 }

 bool CFMIAXNetwork::writeKey(bool key)
@@ -727,11 +730,13 @@ bool CFMIAXNetwork::writeKey(bool key)
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 12U);

-	return m_socket.write(buffer, 12U, m_addr, m_addrLen);
+	return m_socket.write(buffer, 12U, m_serverAddr, m_serverAddrLen);
 }

-bool CFMIAXNetwork::writePing()
+bool CFMIAXNetwork::writePing(const sockaddr_storage& addr, unsigned int addrLen)
 {
+	assert(addrLen > 0U);
+
 #if defined(DEBUG_IAX)
 	LogDebug("IAX PING sent");
 #endif
@@ -766,11 +771,13 @@ bool CFMIAXNetwork::writePing()
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 12U);

-	return m_socket.write(buffer, 12U, m_addr, m_addrLen);
+	return m_socket.write(buffer, 12U, addr, addrLen);
 }

-bool CFMIAXNetwork::writePong(unsigned int ts)
+bool CFMIAXNetwork::writePong(const sockaddr_storage& addr, unsigned int addrLen, unsigned int ts)
 {
+	assert(addrLen > 0U);
+
 #if defined(DEBUG_IAX)
 	LogDebug("IAX PONG sent");
 #endif
@@ -817,11 +824,13 @@ bool CFMIAXNetwork::writePong(unsigned int ts)
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 46U);

-	return m_socket.write(buffer, 46U, m_addr, m_addrLen);
+	return m_socket.write(buffer, 46U, addr, addrLen);
 }

-bool CFMIAXNetwork::writeAck(unsigned int ts)
+bool CFMIAXNetwork::writeAck(const sockaddr_storage& addr, unsigned int addrLen, unsigned int ts)
 {
+	assert(addrLen > 0U);
+
 #if defined(DEBUG_IAX)
 	LogDebug("IAX ACK sent");
 #endif
@@ -853,11 +862,13 @@ bool CFMIAXNetwork::writeAck(unsigned int ts)
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 12U);

-	return m_socket.write(buffer, 12U, m_addr, m_addrLen);
+	return m_socket.write(buffer, 12U, addr, addrLen);
 }

-bool CFMIAXNetwork::writeLagRp(unsigned int ts)
+bool CFMIAXNetwork::writeLagRp(const sockaddr_storage& addr, unsigned int addrLen, unsigned int ts)
 {
+	assert(addrLen > 0U);
+
 #if defined(DEBUG_IAX)
 	LogDebug("IAX LAGRP sent");
 #endif
@@ -891,11 +902,13 @@ bool CFMIAXNetwork::writeLagRp(unsigned int ts)
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 12U);

-	return m_socket.write(buffer, 12U, m_addr, m_addrLen);
+	return m_socket.write(buffer, 12U, addr, addrLen);
 }

-bool CFMIAXNetwork::writeLagRq()
+bool CFMIAXNetwork::writeLagRq(const sockaddr_storage& addr, unsigned int addrLen)
 {
+	assert(addrLen > 0U);
+
 #if defined(DEBUG_IAX)
 	LogDebug("IAX LAGRQ sent");
 #endif
@@ -930,7 +943,7 @@ bool CFMIAXNetwork::writeLagRq()
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 12U);

-	return m_socket.write(buffer, 12U, m_addr, m_addrLen);
+	return m_socket.write(buffer, 12U, addr, addrLen);
 }

 bool CFMIAXNetwork::writeHangup()
@@ -967,7 +980,7 @@ bool CFMIAXNetwork::writeHangup()
 	buffer[11U] = IAX_COMMAND_HANGUP;

 	unsigned int pos = 0U;
-	unsigned int length = setIEString(buffer, pos, IAX_IE_CAUSE, REASON);
+	unsigned int length = setIEUInt8(buffer, pos, IAX_IE_CAUSE, 0x00U);

 #if !defined(DEBUG_IAX)
 	if (m_debug)
@@ -975,7 +988,7 @@ bool CFMIAXNetwork::writeHangup()

 	CUtils::dump(1U, "FM IAX Network Data Sent", buffer, length);

-	return m_socket.write(buffer, length, m_addr, (unsigned int)m_addrLen);
+	return m_socket.write(buffer, length, m_serverAddr, m_serverAddrLen);
 }

 void CFMIAXNetwork::uLawEncode(const short* audio, unsigned char* buffer, unsigned int length) const
@@ -1071,7 +1084,7 @@ bool CFMIAXNetwork::writeRegReq()
 	buffer[11U] = IAX_COMMAND_REGREQ;

 	unsigned int pos = 0U;
-	setIEString(buffer, pos, IAX_IE_USERNAME, m_username);
+	setIEString(buffer, pos, IAX_IE_USERNAME, m_source);

 	setIEUInt16(buffer, pos, IAX_IE_REFRESH, REFRESH_TIME);

@@ -1120,11 +1133,14 @@ bool CFMIAXNetwork::writeRegReq()
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, length);

-	return m_socket.write(buffer, length, m_addr, m_addrLen);
+	return m_socket.write(buffer, length, m_domainAddr, m_domainAddrLen);
 }

 bool CFMIAXNetwork::writeAudio(const short* audio, unsigned int length)
 {
+	assert(audio != NULL);
+	assert(length > 0U);
+
 #if defined(DEBUG_IAX)
 	LogDebug("IAX ULAW sent");
 #endif
@@ -1161,7 +1177,7 @@ bool CFMIAXNetwork::writeAudio(const short* audio, unsigned int length)
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 12U + length);

-	return m_socket.write(buffer, 12U + length, m_addr, m_addrLen);
+	return m_socket.write(buffer, 12U + length, m_serverAddr, m_serverAddrLen);
 }

 bool CFMIAXNetwork::writeMiniFrame(const short* audio, unsigned int length)
@@ -1189,7 +1205,7 @@ bool CFMIAXNetwork::writeMiniFrame(const short* audio, unsigned int length)
 #endif
 		CUtils::dump(1U, "FM IAX Network Data Sent", buffer, 4U + length);

-	return m_socket.write(buffer, 4U + length, m_addr, m_addrLen);
+	return m_socket.write(buffer, 4U + length, m_serverAddr, m_serverAddrLen);
 }

 bool CFMIAXNetwork::compareFrame(const unsigned char* buffer, unsigned char type1, unsigned char type2) const
--- a/FMIAXNetwork.h
+++ b/FMIAXNetwork.h
@@ -45,7 +45,7 @@ enum IAX_STATUS {

 class CFMIAXNetwork : public IFMNetwork {
 public:
-	CFMIAXNetwork(const std::string& callsign, const std::string& username, const std::string& password, const std::string& node, const std::string& localAddress, unsigned short localPort, const std::string& gatewayAddress, unsigned short gatewayPort, bool debug);
+	CFMIAXNetwork(const std::string& domain, const std::string& password, const std::string& source, const std::string& destination, const std::string& localAddress, unsigned short localPort, const std::string& gatewayAddress, unsigned short gatewayPort, bool debug);
 	virtual ~CFMIAXNetwork();

 	virtual bool open();
@@ -67,13 +67,14 @@ public:
 	virtual void clock(unsigned int ms);

 private:
-	std::string         m_callsign;
-	std::string         m_username;
 	std::string         m_password;
-	std::string         m_node;
+	std::string         m_source;
+	std::string         m_destination;
 	CUDPSocket          m_socket;
-	sockaddr_storage    m_addr;
-	unsigned int        m_addrLen;
+	sockaddr_storage    m_domainAddr;
+	unsigned int        m_domainAddrLen;
+	sockaddr_storage    m_serverAddr;
+	unsigned int        m_serverAddrLen;
 	bool                m_debug;
 	bool                m_enabled;
 	CRingBuffer<unsigned char> m_buffer;
@@ -101,11 +102,11 @@ private:

 	bool writeNew();
 	bool writeKey(bool key);
-	bool writePing();
-	bool writePong(unsigned int ts);
-	bool writeAck(unsigned int ts);
-	bool writeLagRq();
-	bool writeLagRp(unsigned int ts);
+	bool writePing(const sockaddr_storage& addr, unsigned int addrLen);
+	bool writePong(const sockaddr_storage& addr, unsigned int addrLen, unsigned int ts);
+	bool writeAck(const sockaddr_storage& addr, unsigned int addrLen, unsigned int ts);
+	bool writeLagRq(const sockaddr_storage& addr, unsigned int addrLen);
+	bool writeLagRp(const sockaddr_storage& addr, unsigned int addrLen, unsigned int ts);
 	bool writeHangup();
 	bool writeRegReq();
 	bool writeAudio(const short* audio, unsigned int length);
--- a/MMDVM.ini
+++ b/MMDVM.ini
@@ -44,7 +44,7 @@ Time=24

 [Modem]
 # Valid values are "null", "uart", "udp", and (on Linux) "i2c"
-Protocol=uart
+Protocol=null
 # The port and speed used for a UART connection
 # UARTPort=\\.\COM4
 # UARTPort=/dev/ttyACM0
@@ -94,7 +94,7 @@ LocalPort=40095
 # SendFrameType=0

 [D-Star]
-Enable=1
+Enable=0
 Module=C
 SelfOnly=0
 AckReply=1
@@ -106,7 +106,7 @@ RemoteGateway=0
 WhiteList=

 [DMR]
-Enable=1
+Enable=0
 Beacons=0
 BeaconInterval=60
 BeaconDuration=3
@@ -124,7 +124,7 @@ TXHang=4
 # OVCM=0

 [System Fusion]
-Enable=1
+Enable=0
 LowDeviation=0
 SelfOnly=0
 TXHang=4
@@ -132,7 +132,7 @@ RemoteGateway=0
 # ModeHang=10

 [P25]
-Enable=1
+Enable=0
 NAC=293
 SelfOnly=0
 OverrideUIDCheck=0
@@ -141,7 +141,7 @@ TXHang=5
 # ModeHang=10

 [NXDN]
-Enable=1
+Enable=0
 RAN=1
 SelfOnly=0
 RemoteGateway=0
@@ -149,14 +149,14 @@ TXHang=5
 # ModeHang=10

 [M17]
-Enable=1
+Enable=0
 CAN=0
 SelfOnly=0
 TXHang=5
 # ModeHang=10

 [POCSAG]
-Enable=1
+Enable=0
 Frequency=439987500

 [FM]
@@ -206,7 +206,7 @@ ExtAudioBoost=1
 # ModeHang=10

 [AX.25]
-Enable=1
+Enable=0
 TXDelay=300
 RXTwist=6
 SlotTime=30
@@ -288,11 +288,11 @@ Debug=0
 [FM Network]
 Enable=1
 # Protocol may be USRP, RAW, or IAX
-Protocol=USRP
-LocalAddress=127.0.0.1
-LocalPort=3810
-GatewayAddress=127.0.0.1
-GatewayPort=4810
+Protocol=IAX
+# LocalAddress=127.0.0.1
+LocalPort=4569
+GatewayAddress=209.112.244.27
+GatewayPort=4569
 PreEmphasis=1
 DeEmphasis=1
 TXAudioGain=1.0
@@ -303,10 +303,11 @@ Debug=0
 SampleRate=48000
 # The squelch file is optional
 SquelchFile=/tmp/sql
-# Username, Password, and Node are IAX only options
-Username=Dave
+# Domain, Password, Source, and Destination are IAX only options
+Domain=register.allstarlink.org
 Password=PASSWORD
-Node=Node1
+Source=12345
+Destination=54321

 [AX.25 Network]
 Enable=1
--- a/MMDVMHost.cpp
+++ b/MMDVMHost.cpp
@@ -1888,9 +1888,10 @@ bool CMMDVMHost::createPOCSAGNetwork()
 bool CMMDVMHost::createFMNetwork()
 {
 	std::string callsign       = m_conf.getFMCallsign();
-	std::string username       = m_conf.getFMNetworkUsername();
+	std::string domain         = m_conf.getFMNetworkDomain();
 	std::string password       = m_conf.getFMNetworkPassword();
-	std::string node           = m_conf.getFMNetworkNode();
+	std::string source         = m_conf.getFMNetworkSource();
+	std::string destination    = m_conf.getFMNetworkDestination();
 	std::string protocol       = m_conf.getFMNetworkProtocol();
 	unsigned int sampleRate    = m_conf.getFMNetworkSampleRate();
 	std::string squelchFile    = m_conf.getFMNetworkSquelchFile();
@@ -1923,8 +1924,9 @@ bool CMMDVMHost::createFMNetwork()
 	}

 	if (protocol == "IAX") {
-		LogInfo("    Username: %s", username.c_str());
-		LogInfo("    Node: %s", node.c_str());
+		LogInfo("    Domain: %s", domain.c_str());
+		LogInfo("    Source: %s", source.c_str());
+		LogInfo("    Destiation: %s", destination.c_str());
 	}

 	if (protocol == "USRP") {
@@ -1932,7 +1934,7 @@ bool CMMDVMHost::createFMNetwork()
 	} else if (protocol == "RAW") {
 		m_fmNetwork = new CFMRAWNetwork(localAddress, localPort, gatewayAddress, gatewayPort, sampleRate, squelchFile, debug);
 	} else if (protocol == "IAX") {
-		m_fmNetwork = new CFMIAXNetwork(callsign, username, password, node, localAddress, localPort, gatewayAddress, gatewayPort, debug);
+		m_fmNetwork = new CFMIAXNetwork(domain, password, source, destination, localAddress, localPort, gatewayAddress, gatewayPort, debug);
 	} else {
 		LogError("Invalid FM network protocol specified - %s", protocol.c_str());
 		return false;