properly send call progress and alerting PDUs, re-fix one-way audio on call manager, and hopefully add call progress (N+101) support (not tested)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3023 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_h323.c

@@ -393,7 +393,7 @@ static int oh323_call(struct ast_channel *c, char *dest, int timeout)
 	int res;
 	struct oh323_pvt *p = c->pvt->pvt;
 	char called_addr[256];
-	char *tmp;
+	char *tmp, *cid, *cidname, oldcid[256];
 
 	strtok_r(dest, "/", &(tmp));
 
@@ -424,15 +424,46 @@ static int oh323_call(struct ast_channel *c, char *dest, int timeout)
 
 	/* Copy callerid, if there is any */
 	if (c->callerid) {
-		char *tmp = strchr(c->callerid, '"');
+                memset(oldcid, 0, sizeof(oldcid));
-		if (!tmp) {
+                memcpy(oldcid, c->callerid, strlen(c->callerid));
-			p->calloptions.callerid = malloc(80); // evil
+                oldcid[sizeof(oldcid)-1] = '\0';
-			// sprintf(p->calloptions.callerid, "\"%s\"", c->callerid);
+                ast_callerid_parse(oldcid, &cidname, &cid);
-			sprintf(p->calloptions.callerid, "\"\" <%s>", c->callerid);
+                if (p->calloptions.callerid) {
-		} else {
+                        free(p->calloptions.callerid);
-			p->calloptions.callerid = strdup(c->callerid);
+                        p->calloptions.callerid = NULL;
-		}	
+                }
-	 }
+                if (p->calloptions.callername) {
+                        free(p->calloptions.callername);
+                        p->calloptions.callername = NULL;
+                }
+                p->calloptions.callerid = (char*)malloc(256);
+                if (p->calloptions.callerid == NULL) {
+                        ast_log(LOG_ERROR, "Not enough memory.\n");
+                        return(-1);
+                }
+                memset(p->calloptions.callerid, 0, 256);
+                if ((cid != NULL)&&(strlen(cid) > 0))
+                        strncpy(p->calloptions.callerid, cid, 255);
+
+                p->calloptions.callername = (char*)malloc(256);
+                if (p->calloptions.callername == NULL) {
+                        ast_log(LOG_ERROR, "Not enough memory.\n");
+                        return(-1);
+                }
+                memset(p->calloptions.callername, 0, 256);
+                if ((cidname != NULL)&&(strlen(cidname) > 0))
+                        strncpy(p->calloptions.callername, cidname, 255);
+
+        } else {
+                if (p->calloptions.callerid) {
+                        free(p->calloptions.callerid);
+                        p->calloptions.callerid = NULL;
+                }
+                if (p->calloptions.callername) {
+                        free(p->calloptions.callername);
+                        p->calloptions.callername = NULL;
+                }
+        }
 
 	res = h323_make_call(called_addr, &(p->cd), p->calloptions);
 
@@ -440,12 +471,9 @@ static int oh323_call(struct ast_channel *c, char *dest, int timeout)
 		ast_log(LOG_NOTICE, "h323_make_call failed(%s)\n", c->name);
 		return -1;
 	}
-
-	ast_setstate(c, AST_STATE_RINGING);
 	return 0;
 }
 
-
 static int oh323_answer(struct ast_channel *c)
 {
 	int res;
@@ -597,24 +625,34 @@ static int oh323_indicate(struct ast_channel *c, int condition)
 	
 	switch(condition) {
 	case AST_CONTROL_RINGING:
-		if (c->_state == AST_STATE_RING) {
+		if (c->_state == AST_STATE_RING || c->_state == AST_STATE_RINGING) {
-			return -1;
+			h323_send_alerting(p->cd.call_token);
+ 			break;
+ 		}		
+		return -1;
+	case AST_CONTROL_PROGRESS:
+		if (c->_state != AST_STATE_UP) {
+			h323_send_progress(p->cd.call_token);
+			break;
 		}
-		return 0;
+		return -1;
+
 	case AST_CONTROL_BUSY:
 		if (c->_state != AST_STATE_UP) {
-			p->alreadygone = 1;
+			h323_answering_call(p->cd.call_token, 1);
-			ast_softhangup(c, AST_SOFTHANGUP_DEV);
+ 			p->alreadygone = 1;
+			ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV);			
 			break;
 		}
-		return 0;
+		return -1;
 	case AST_CONTROL_CONGESTION:
 		if (c->_state != AST_STATE_UP) {
+			h323_answering_call(p->cd.call_token, 1);
 			p->alreadygone = 1;
-			ast_softhangup(c, AST_SOFTHANGUP_DEV);
+			ast_softhangup_nolock(c, AST_SOFTHANGUP_DEV);
 			break;
 		}
-		return 0;
+		return -1;
 	case -1:
 		return -1;
 	default:
@@ -986,13 +1024,14 @@ int setup_incoming_call(call_details_t cd)
 	p->cd.call_token = cd.call_token;
 	p->cd.call_source_aliases = cd.call_source_aliases;
 	p->cd.call_dest_alias = cd.call_dest_alias;
+	p->cd.call_source_name = cd.call_source_name;
 	p->cd.call_source_e164 = cd.call_source_e164;
 	p->cd.call_dest_e164 = cd.call_dest_e164;
 
 	if (h323debug) {
 		ast_verbose(VERBOSE_PREFIX_3 "Setting up Call\n");
 		ast_verbose(VERBOSE_PREFIX_3 "	   Call token:  [%s]\n", p->cd.call_token);
-		ast_verbose(VERBOSE_PREFIX_3 "	   Calling party name:  [%s]\n", p->cd.call_source_aliases);
+		ast_verbose(VERBOSE_PREFIX_3 "	   Calling party name:  [%s]\n", p->cd.call_source_name);
 		ast_verbose(VERBOSE_PREFIX_3 "	   Calling party number:  [%s]\n", p->cd.call_source_e164);
 		ast_verbose(VERBOSE_PREFIX_3 "	   Called  party name:  [%s]\n", p->cd.call_dest_alias);
 		ast_verbose(VERBOSE_PREFIX_3 "	   Called  party number:  [%s]\n", p->cd.call_dest_e164);
@@ -1014,17 +1053,14 @@ int setup_incoming_call(call_details_t cd)
 			strncpy(p->exten, alias->name, sizeof(p->exten)-1);
 			strncpy(p->context, alias->context, sizeof(p->context)-1);
 		}
-
+		sprintf(p->callerid, "%s <%s>", p->cd.call_source_name, p->cd.call_source_e164);
-
-		sprintf(p->callerid, "%s <%s>", p->cd.call_source_aliases, p->cd.call_source_e164);
-
 	} else { 
 		/* Either this call is not from the Gatekeeper 
 		   or we are not allowing gk routed calls */
 		user  = find_user(cd);
 
 		if (!user) {
-			sprintf(p->callerid, "%s <%s>", p->cd.call_source_aliases, p->cd.call_source_e164); 
+			sprintf(p->callerid, "%s <%s>", p->cd.call_source_name, p->cd.call_source_e164);
 			if (!ast_strlen_zero(p->cd.call_dest_e164)) {
 				strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
 			} else {
@@ -1061,11 +1097,11 @@ int setup_incoming_call(call_details_t cd)
 			p->bridge = user->bridge;
                       p->nat = user->nat;
 
-			if (!ast_strlen_zero(user->callerid)) 
+			if (!ast_strlen_zero(user->callerid)) {
 				strncpy(p->callerid, user->callerid, sizeof(p->callerid) - 1);
-			else
+			} else {
-				sprintf(p->callerid, "%s <%s>", p->cd.call_source_aliases, p->cd.call_source_e164); 
+				 sprintf(p->callerid, "%s <%s>", p->cd.call_source_name, p->cd.call_source_e164); 
-
+			}
 			if (!ast_strlen_zero(p->cd.call_dest_e164)) {
 				strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
 			} else {
@@ -1161,9 +1197,35 @@ void connection_made(unsigned call_reference)
 	c = p->owner;	
 
 	ast_setstate(c, AST_STATE_UP);
+	ast_queue_control(c, AST_CONTROL_ANSWER);
 	return;
 }
 
+/**
+  *  Call-back function to signal asterisk that the channel is ringing
+  *  Returns nothing
+  */
+void chan_ringing(unsigned call_reference)
+{
+        struct ast_channel *c = NULL;
+        struct oh323_pvt *p = NULL;
+
+        p = find_call(call_reference);
+
+        if (!p) {
+                ast_log(LOG_ERROR, "Something is wrong: ringing\n");
+	}
+
+        if (!p->owner) {
+                ast_log(LOG_ERROR, "Channel has no owner\n");
+                return;
+        }
+        c = p->owner;
+        ast_setstate(c, AST_STATE_RINGING);
+        ast_queue_control(c, AST_CONTROL_RINGING);
+        return;
+}
+
 /**
   * Call-back function to cleanup communication
   * Returns nothing,
@@ -1171,7 +1233,7 @@ void connection_made(unsigned call_reference)
 void cleanup_connection(call_details_t cd)
 {	
 	struct oh323_pvt *p = NULL;
-//	struct oh323_peer *peer = NULL;
+/*	struct oh323_peer *peer = NULL; */
 	struct oh323_user *user = NULL;
 	struct ast_rtp *rtp = NULL;
 	
@@ -1793,6 +1855,7 @@ int load_module()
 	 			       create_connection, 
 				       setup_rtp_connection, 
 				       cleanup_connection, 
+				       chan_ringing,
 				       connection_made, 
 				       send_digit);	
 	
@@ -1800,7 +1863,6 @@ int load_module()
 		/* start the h.323 listener */
 		if (h323_start_listener(port, bindaddr)) {
 			ast_log(LOG_ERROR, "Unable to create H323 listener.\n");
-//			h323_end_process();
 			return -1;
 		}
 
@@ -1808,7 +1870,6 @@ int load_module()
 		if (gatekeeper_disable == 0) {
 			if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
 				ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
-//				h323_end_process();
 				return 0;
 			}
 		}

channels/h323/ast_h323.cpp

@@ -218,8 +218,7 @@ H323Codec * AST_G729ACapability::CreateCodec(H323Codec::Direction direction) con
   *					transport = ip.
   *					port = 1720.
   */
-int MyH323EndPoint::MakeCall(const PString & dest, PString & token, 
+int MyH323EndPoint::MakeCall(const PString & dest, PString & token, unsigned int *callReference, unsigned int port, char *callerid, char *callername)
-							  			unsigned int *callReference, unsigned int port, char *callerid)
 {
 	PString fullAddress;
 	MyH323Connection * connection;
@@ -245,6 +244,15 @@ int MyH323EndPoint::MakeCall(const PString & dest, PString & token,
 	
 	if (callerid)
 		connection->SetLocalPartyName(PString(callerid));
+	if (callername) {
+                localAliasNames.RemoveAll();
+		connection->SetLocalPartyName(PString(callername));
+	        if (callerid)
+                  localAliasNames.AppendString(PString(callerid));
+        } else if (callerid) {
+                localAliasNames.RemoveAll();
+                connection->SetLocalPartyName(PString(callerid));
+        }
 
 	connection->Unlock(); 	
 
@@ -486,7 +494,7 @@ H323Connection::AnswerCallResponse MyH323Connection::OnAnswerCall(const PString
 {
 	/* The call will be answered later with "AnsweringCall()" function.
 	 */ 
-	return H323Connection::AnswerCallAlertWithMedia;
+	return H323Connection::AnswerCallDeferred;
 }
 
 BOOL  MyH323Connection::OnAlerting(const H323SignalPDU & /*alertingPDU*/, const PString & username)
@@ -495,6 +503,7 @@ BOOL  MyH323Connection::OnAlerting(const H323SignalPDU & /*alertingPDU*/, const
 	if (h323debug) {
 		cout << "	-- Ringing phone for \"" << username << "\"" << endl;
 	}
+	on_chan_ringing(GetCallReference());
 	return TRUE;
 }
 
@@ -508,6 +517,7 @@ BOOL MyH323Connection::OnReceivedSignalSetup(const H323SignalPDU & setupPDU)
 	call_details_t cd;
 	PString sourceE164;
 	PString destE164;
+	PString sourceName;
 	PString sourceAliases;	
 	PString destAliases;
 	PIPSocket::Address Ip;
@@ -519,6 +529,8 @@ BOOL MyH323Connection::OnReceivedSignalSetup(const H323SignalPDU & setupPDU)
 			
 	sourceE164 = "";
 	setupPDU.GetSourceE164(sourceE164);
+	sourceName = "";
+	sourceName=setupPDU.GetQ931().GetDisplayName();
 	destE164 = "";
 	setupPDU.GetDestinationE164(destE164);
 
@@ -540,6 +552,7 @@ BOOL MyH323Connection::OnReceivedSignalSetup(const H323SignalPDU & setupPDU)
 	cd.call_dest_alias = (const char *)destAliases;
 	cd.call_source_e164 = (const char *)sourceE164;
 	cd.call_dest_e164 = (const char *)destE164;
+	cd.call_source_name = (const char *)sourceName;
 
 	GetSignallingChannel()->GetRemoteAddress().GetIpAndPort(Ip, sourcePort);
 	cd.sourceIp = (const char *)Ip.AsString();
@@ -727,11 +740,11 @@ BOOL MyH323Connection::OnStartLogicalChannel(H323Channel & channel)
 
 /* MyH323_ExternalRTPChannel */
 MyH323_ExternalRTPChannel::MyH323_ExternalRTPChannel(MyH323Connection & connection,
-													const H323Capability & capability,
+						     const H323Capability & capability,
-													Directions direction,
+						     Directions direction,
-													unsigned sessionID,
+ 						     unsigned sessionID,
-													const PIPSocket::Address & ip,
+						     const PIPSocket::Address & ip,
-													WORD dataPort)
+		  				     WORD dataPort)
 	: H323_ExternalRTPChannel(connection, capability, direction, sessionID, ip, dataPort)
 {
 	if (h323debug) {
@@ -740,6 +753,24 @@ MyH323_ExternalRTPChannel::MyH323_ExternalRTPChannel(MyH323Connection & connecti
 	return;
 }
 
+MyH323_ExternalRTPChannel::MyH323_ExternalRTPChannel(MyH323Connection & connection,
+	                                             const H323Capability & capability,
+                                                     Directions direction,
+                                                     unsigned id)
+ : H323_ExternalRTPChannel::H323_ExternalRTPChannel(connection, capability, direction, id)
+{   
+} 
+
+MyH323_ExternalRTPChannel::MyH323_ExternalRTPChannel(MyH323Connection & connection, 
+						     const H323Capability & capability,
+                                                     Directions direction,
+                                                     unsigned id,
+                                                     const H323TransportAddress & data,
+                                                     const H323TransportAddress & control) 
+ : H323_ExternalRTPChannel::H323_ExternalRTPChannel(connection, capability, direction, id, data, control)
+{
+} 
+
 MyH323_ExternalRTPChannel::~MyH323_ExternalRTPChannel()
 {
 	if (h323debug) {
@@ -748,29 +779,17 @@ MyH323_ExternalRTPChannel::~MyH323_ExternalRTPChannel()
 	return;
 }
 
-BOOL MyH323_ExternalRTPChannel::OnReceivedPDU(
+BOOL MyH323_ExternalRTPChannel::OnReceivedAckPDU(const H245_H2250LogicalChannelAckParameters & param)
-				const H245_H2250LogicalChannelParameters & param,
-				unsigned & errorCode)
 {
-	if (h323debug) {
+	PIPSocket::Address remoteIpAddress;
-		cout << "	MyH323_ExternalRTPChannel::OnReceivedPDU " << endl;
+	WORD remotePort;
-	}
-	return H323_ExternalRTPChannel::OnReceivedPDU( param, errorCode );
-}
-
-BOOL MyH323_ExternalRTPChannel::OnReceivedAckPDU(
-				const H245_H2250LogicalChannelAckParameters & param)
-{
-
-	PIPSocket::Address remoteIpAddress;		// IP Address of remote endpoint
-	WORD			   remotePort;			// remote endpoint Data port (control is dataPort+1)
 
 	if (h323debug) {
 		cout << "	MyH323_ExternalRTPChannel::OnReceivedAckPDU " << endl;
 	}
 
-	if (H323_ExternalRTPChannel::OnReceivedAckPDU( param )) {
+	if (H323_ExternalRTPChannel::OnReceivedAckPDU(param)) {
-		GetRemoteAddress(remoteIpAddress, remotePort);
+		H323_ExternalRTPChannel::GetRemoteAddress(remoteIpAddress, remotePort);
 		if (h323debug) {
 			cout << "		-- remoteIpAddress: " << remoteIpAddress << endl;
 			cout << "		-- remotePort: " << remotePort << endl;
@@ -838,7 +857,8 @@ void h323_callback_register(setup_incoming_cb  	ifunc,
  			    on_connection_cb   	confunc,
 			    start_logchan_cb   	lfunc,
  			    clear_con_cb	clfunc,
- 			    con_established_cb 	efunc,
+ 			    chan_ringing_cb     rfunc,
+			    con_established_cb 	efunc,
  			    send_digit_cb	dfunc)
 {
 	on_incoming_call = ifunc;
@@ -846,6 +866,7 @@ void h323_callback_register(setup_incoming_cb  	ifunc,
 	on_create_connection = confunc;
 	on_start_logical_channel = lfunc;
 	on_connection_cleared = clfunc;
+	on_chan_ringing = rfunc;
 	on_connection_established = efunc;
 	on_send_digit = dfunc;
 }
@@ -1085,7 +1106,7 @@ int h323_make_call(char *host, call_details_t *cd, call_options_t call_options)
 	
 	PString dest(host);
 
-	res = endPoint->MakeCall(dest, token, &cd->call_reference, call_options.port, call_options.callerid);
+	res = endPoint->MakeCall(dest, token, &cd->call_reference, call_options.port, call_options.callerid, call_options.callername);
 	memcpy((char *)(cd->call_token), (const unsigned char *)token, token.GetLength());
 	
 	return res;
@@ -1101,6 +1122,45 @@ int h323_clear_call(const char *call_token)
 	return 0;
 };
 
+/* Send Alerting PDU to H.323 caller */
+int h323_send_alerting(const char *token)
+{
+        const PString currentToken(token);
+        H323Connection * connection;
+
+        connection = endPoint->FindConnectionWithLock(currentToken);
+
+        if (!connection) {
+                cout << "No connection found for " << token << endl;
+                return -1;
+        }
+
+        connection->AnsweringCall(H323Connection::AnswerCallPending);
+        connection->Unlock();
+
+        return 0; 
+
+}
+
+/* Send Progress PDU to H.323 caller */
+int h323_send_progress(const char *token)
+{
+        const PString currentToken(token);
+        H323Connection * connection;
+
+        connection = endPoint->FindConnectionWithLock(currentToken);
+
+        if (!connection) {
+                cout << "No connection found for " << token << endl;
+                return -1;
+        }
+
+        connection->AnsweringCall(H323Connection::AnswerCallDeferredWithMedia);
+        connection->Unlock();
+
+        return 0;  
+}
+
 /** This function tells the h.323 stack to either 
     answer or deny an incoming call  */
 int h323_answering_call(const char *token, int busy) 

channels/h323/ast_h323.h

@@ -198,7 +198,7 @@ class MyH323EndPoint : public H323EndPoint {
 
 	public:
 
-	int MakeCall(const PString &, PString &, unsigned int *, unsigned int, char *);
+	int MakeCall(const PString &, PString &, unsigned int *, unsigned int, char *, char *s);
 	BOOL ClearCall(const PString &);
 
 	void OnClosedLogicalChannel(H323Connection &, const H323Channel &);
@@ -225,8 +225,10 @@ class MyH323Connection : public H323Connection {
 	MyH323Connection(MyH323EndPoint &, unsigned, unsigned);
 	~MyH323Connection();
 
-	H323Channel * CreateRealTimeLogicalChannel(const H323Capability &, H323Channel::Directions, unsigned, 
+	H323Channel * CreateRealTimeLogicalChannel(const H323Capability &, 
-											   const H245_H2250LogicalChannelParameters *);
+						   H323Channel::Directions, 
+					 	   unsigned, 
+						   const H245_H2250LogicalChannelParameters *);
 	H323Connection::AnswerCallResponse OnAnswerCall(const PString &, const H323SignalPDU &, H323SignalPDU &);
 	void OnReceivedReleaseComplete(const H323SignalPDU &);
 	BOOL OnAlerting(const H323SignalPDU &, const PString &);
@@ -245,33 +247,53 @@ class MyH323Connection : public H323Connection {
 	PString sourceE164;
 	PString destE164;
 
-	PIPSocket::Address externalIpAddress;	// IP address of media server
+	PIPSocket::Address externalIpAddress;	
-    	PIPSocket::Address remoteIpAddress;		// IP Address of remote endpoint
+    	PIPSocket::Address remoteIpAddress;	
-	WORD			   externalPort;		// local media server Data port (control is dataPort+1)
+	WORD externalPort;
-	WORD			   remotePort;			// remote endpoint Data port (control is dataPort+1)
+	WORD remotePort;		
-	WORD			   sessionId;
+	WORD sessionId;
-	BOOL			   bridging;			// Used to help determine which IP to use
+	BOOL bridging;			
 };
 
 class MyH323_ExternalRTPChannel : public H323_ExternalRTPChannel {
 
-	PCLASSINFO(MyH323_ExternalRTPChannel, H323_ExternalRTPChannel);
+        PCLASSINFO(MyH323_ExternalRTPChannel, H323_ExternalRTPChannel);
 
-	public:
+        public:
+	MyH323_ExternalRTPChannel(
+      		MyH323Connection & connection,     
+      		const H323Capability & capability, 
+      		Directions direction,              
+      		unsigned sessionID);
 
-    MyH323_ExternalRTPChannel(MyH323Connection &, const H323Capability &, Directions,
+    	MyH323_ExternalRTPChannel(
-    						unsigned, const PIPSocket::Address &, WORD);
+      		MyH323Connection & connection,      
+      		const H323Capability & capability,  
+      		Directions direction,               
+      		unsigned sessionID,                 
+      		const H323TransportAddress & data,  
+      		const H323TransportAddress & control);
+    
+	/* Create a new channel. */
+    	MyH323_ExternalRTPChannel(
+      		MyH323Connection & connection,        
+      		const H323Capability & capability,  
+      		Directions direction,               
+      		unsigned sessionID,                 
+      		const PIPSocket::Address & ip,      
+      		WORD dataPort); 
 
+	/* Destructor */
 	~MyH323_ExternalRTPChannel();
 
-    BOOL OnReceivedPDU(
+	
-      const H245_H2250LogicalChannelParameters & param, /// Acknowledgement PDU
+     	BOOL OnReceivedAckPDU(const H245_H2250LogicalChannelAckParameters & param);
-      unsigned & errorCode                              /// Error on failure
-    );
 
-    BOOL OnReceivedAckPDU(const H245_H2250LogicalChannelAckParameters & param);
+     	PIPSocket::Address externalIpAddress;   
-
+     	PIPSocket::Address remoteIpAddress;             
-};
+     	WORD externalPort;               
+     	WORD remotePort;
+}; 
 
 /**
  * The MyProcess is a necessary descendant PProcess class so that the H323EndPoint 

channels/h323/chan_h323.h

@@ -85,10 +85,11 @@ struct oh323_alias {
 	PBX application and passed through make_call 
 	function*/
 typedef struct call_options {
-	char		   *callerid;
+	char		*callerid;
-	int				noFastStart;
+	char		*callername;
-	int				noH245Tunnelling;
+	int	  	noFastStart;
-	int				noSilenceSuppression;
+	int		noH245Tunnelling;
+	int		noSilenceSuppression;
 	unsigned int	port;
 } call_options_t;
 
@@ -101,6 +102,7 @@ typedef struct call_details {
 	const char *call_token;				
 	const char *call_source_aliases;
 	const char *call_dest_alias;
+	const char *call_source_name;
 	const char *call_source_e164;
 	const char *call_dest_e164;
 	const char *sourceIp;
@@ -136,6 +138,11 @@ setup_outbound_cb	on_outgoing_call;
 typedef void (*start_logchan_cb)(unsigned int, const char *, int);
 start_logchan_cb	on_start_logical_channel; 
 
+/* This is a callback prototype function, called when openh323
+   OnAlerting is invoked */
+typedef void (*chan_ringing_cb)(unsigned);
+chan_ringing_cb		on_chan_ringing;
+
 /* This is a callback protoype function, called when the openh323
    OnConnectionEstablished is inovked */
 typedef void (*con_established_cb)(unsigned);
@@ -164,13 +171,14 @@ extern "C" {
 	void h323_debug(int, unsigned);
 
 	/* callback function handler*/
-	void h323_callback_register(setup_incoming_cb,
+	void h323_callback_register(setup_incoming_cb,  
- 								setup_outbound_cb,
+				    setup_outbound_cb,
- 								on_connection_cb,
+ 				    on_connection_cb,
- 								start_logchan_cb,
+ 				    start_logchan_cb,
- 								clear_con_cb,
+ 				    clear_con_cb,
- 								con_established_cb,
+ 				    chan_ringing_cb,
- 								send_digit_cb);
+				    con_established_cb,
+ 				    send_digit_cb);
 
 
 	int h323_set_capability(int, int);
@@ -191,9 +199,13 @@ extern "C" {
 	/* H323 create and destroy sessions */
 	int h323_make_call(char *host, call_details_t *cd, call_options_t);
 	int h323_clear_call(const char *);
+
+	/* H.323 alerting and progress */
+	int h323_send_alerting(const char *token);
+	int h323_send_progress(const char *token);
+
 	int h323_answering_call(const char *token, int);
-	int h323_soft_hangup(const char *data);
+	int h323_soft_hangup(const char *data);	
-	
 	int h323_show_codec(int fd, int argc, char *argv[]);