diff --git a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/console/linphonec.c b/my_version_to_patch/linphone_with_improved_refer/console/linphonec.c
index ff68fbe..a64c3ba 100644
--- a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/console/linphonec.c
+++ b/my_version_to_patch/linphone_with_improved_refer/console/linphonec.c
@@ -115,6 +115,7 @@ static char **linephonec_readline_completion(const char *text,
 static void linphonec_call_received(LinphoneCore *lc, const char *from);
 static void linphonec_prompt_for_auth(LinphoneCore *lc, const char *realm,
 	const char *username);
+static void linphonec_display_refer (LinphoneCore * lc,const char *refer_to);
 static void linphonec_display_something (LinphoneCore * lc, const char *something);
 static void linphonec_display_url (LinphoneCore * lc, const char *something, const char *url);
 static void linphonec_display_warning (LinphoneCore * lc, const char *something);
@@ -188,7 +189,8 @@ LinphoneCoreVTable linphonec_vtable
 	.display_question=(DisplayQuestionCb)stub,
 	.text_received=linphonec_text_received,
 	.general_state=linphonec_general_state,
-	.dtmf_received=linphonec_dtmf_received
+	.dtmf_received=linphonec_dtmf_received,
+	.refer_received=linphonec_display_refer
 }
 #endif /*_WIN32_WCE*/
 ;
@@ -205,6 +207,16 @@ LinphoneCoreVTable linphonec_vtable
  * Linphone core callback
  */
 static void
+linphonec_display_refer (LinphoneCore * lc,const char *refer_to)
+{
+	fprintf (stdout, "The distant end point asked to transfer the call to %s,don't forget to terminate the call\n%s", refer_to,prompt);
+	fflush(stdout);
+}
+
+/*
+ * Linphone core callback
+ */
+static void
 linphonec_display_something (LinphoneCore * lc, const char *something)
 {
 	fprintf (stdout, "%s\n%s", something,prompt);
diff --git a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/coreapi/callbacks.c b/my_version_to_patch/linphone_with_improved_refer/coreapi/callbacks.c
index 7da3b4b..edc8cfa 100644
--- a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/coreapi/callbacks.c
+++ b/my_version_to_patch/linphone_with_improved_refer/coreapi/callbacks.c
@@ -23,6 +23,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "linphonecore.h"
 #include "private.h"
 #include "mediastreamer2/mediastream.h"
+#include "sal_eXosip2.h"
 
 static void linphone_connect_incoming(LinphoneCore *lc, LinphoneCall *call){
 	if (lc->vtable.show)
@@ -391,7 +392,19 @@ static void dtmf_received(SalOp *op, char dtmf){
 }
 
 static void refer_received(Sal *sal, SalOp *op, const char *referto){
+	osip_message_t *msg;
 	LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
+	if(op != NULL)
+	{
+		eXosip_call_build_notify(op->tid,EXOSIP_SUBCRSTATE_ACTIVE,&msg);
+		if(msg != NULL)
+		{
+			osip_message_set_header(msg,(const char *)"event","refer");
+			osip_message_set_content_type(msg,"message/sipfrag");
+			osip_message_set_body(msg,"SIP/2.0 100 Trying",sizeof("SIP/2.0 100 Trying"));
+			eXosip_call_send_request(op->tid,msg);
+		}
+	}
 	if (lc->vtable.refer_received)
 		lc->vtable.refer_received(lc,referto);
 }
diff --git a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/coreapi/sal_eXosip2.c b/my_version_to_patch/linphone_with_improved_refer/coreapi/sal_eXosip2.c
index 18def9c..82bae96 100644
--- a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/coreapi/sal_eXosip2.c
+++ b/my_version_to_patch/linphone_with_improved_refer/coreapi/sal_eXosip2.c
@@ -1086,6 +1086,36 @@ static void call_message_new(Sal *sal, eXosip_event_t *ev){
 				eXosip_call_send_answer(ev->tid,200,ans);
 			eXosip_unlock();
 		}
+		if(MSG_IS_REFER(ev->request)){
+			osip_header_t *h=NULL;
+			ms_message("Receiving REFER request !");
+			osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
+			eXosip_lock();
+			eXosip_call_build_answer(ev->tid,202,&ans);
+			if (ans)
+				eXosip_call_send_answer(ev->tid,202,ans);
+			eXosip_unlock();
+			if (h){
+				SalOp *op=(SalOp*)ev->external_reference;
+				sal->callbacks.refer_received(sal,op,h->hvalue);
+			}
+		}
+		if(MSG_IS_NOTIFY(ev->request)){
+			osip_header_t *h=NULL;
+			ms_message("Receiving NOTIFY request !");
+			osip_message_header_get_byname(ev->request,"Event",0,&h);
+			if (h){
+				if(!strcmp(h->hvalue,"refer"))
+				{
+					ms_message("get the notify of the Refer sent");
+				}
+			}
+			eXosip_lock();
+			eXosip_call_build_answer(ev->tid,200,&ans);
+			if (ans)
+				eXosip_call_send_answer(ev->tid,200,ans);
+			eXosip_unlock();
+		}
 	}else ms_warning("call_message_new: No request ?");
 }
 
@@ -1157,7 +1187,8 @@ static void other_request(Sal *sal, eXosip_event_t *ev){
 			osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
 			eXosip_message_send_answer(ev->tid,200,NULL);
 			if (h){
-				sal->callbacks.refer_received(sal,NULL,h->hvalue);
+				SalOp *op=(SalOp*)ev->external_reference;
+				sal->callbacks.refer_received(sal,op,h->hvalue);
 			}
 		}else ms_warning("Ignored REFER not coming from this local loopback interface.");
 	}else if (strncmp(ev->request->sip_method, "UPDATE", 6) == 0){
diff --git a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/coreapi/sal_eXosip2_presence.c b/my_version_to_patch/linphone_with_improved_refer/coreapi/sal_eXosip2_presence.c
index c635141..ed775ab 100644
--- a/my_version_to_patch/linphone_with_chat_message_supported_via_proxy/coreapi/sal_eXosip2_presence.c
+++ b/my_version_to_patch/linphone_with_improved_refer/coreapi/sal_eXosip2_presence.c
@@ -71,8 +71,6 @@ void sal_remove_in_subscribe(Sal *sal, SalOp *op){
 
 int sal_text_send(SalOp *op, const char *from, const char *to, const char *msg){
 	osip_message_t *sip=NULL;
-	static int cseq_of_original_build = 0;
-	static int cseq_since_last_original_build = 0;
 
 	if(op->cid == -1)
 	{