diff --git a/coreapi/callbacks.c b/coreapi/callbacks.c
index 5fda3e638..b67f7f812 100644
--- a/coreapi/callbacks.c
+++ b/coreapi/callbacks.c
@@ -286,6 +286,7 @@ static void call_accepted(SalOp *op){
 				ms_free(tmp);
 				ms_free(msg);
 			}
+			linphone_core_update_streams (lc,call,md);
 			linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
 		}else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
 			/*we are put on hold when the call is initially accepted */
@@ -296,6 +297,7 @@ static void call_accepted(SalOp *op){
 				ms_free(tmp);
 				ms_free(msg);
 			}
+			linphone_core_update_streams (lc,call,md);
 			linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
 		}else{
 			if (lc->vtable.display_status){
@@ -306,9 +308,9 @@ static void call_accepted(SalOp *op){
 					a reinvite made by us. We must notify the application this reinvite was accepted*/
 				linphone_call_set_state(call, LinphoneCallUpdated, "Call updated");
 			}
-			linphone_call_set_state(call,LinphoneCallStreamsRunning,"Connected (streams running)");
+			linphone_core_update_streams (lc,call,md);
+			linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
 		}
-		linphone_core_update_streams (lc,call,md);
 	}else{
 		/*send a bye*/
 		ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
diff --git a/coreapi/linphonecall.c b/coreapi/linphonecall.c
index 11b46c89e..e85fc8492 100644
--- a/coreapi/linphonecall.c
+++ b/coreapi/linphonecall.c
@@ -367,7 +367,7 @@ void linphone_call_unref(LinphoneCall *obj){
  * Returns current parameters associated to the call.
 **/
 const LinphoneCallParams * linphone_call_get_current_params(const LinphoneCall *call){
-	return &call->params;
+	return &call->current_params;
 }
 
 /**
@@ -785,6 +785,7 @@ void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_mut
 		ms_fatal("start_media_stream() called without prior init !");
 		return;
 	}
+	call->current_params = call->params;
 	/* adjust rtp jitter compensation. It must be at least the latency of the sound card */
 	int jitt_comp=MAX(lc->sound_conf.latency,lc->rtp_conf.audio_jitt_comp);
 
@@ -862,6 +863,7 @@ void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_mut
 			video_preview_stop(lc->previewstream);
 			lc->previewstream=NULL;
 		}
+		call->current_params.has_video=FALSE;
 		if (stream && stream->dir!=SalStreamInactive) {
 			const char *addr=stream->addr[0]!='\0' ? stream->addr : call->resultdesc->addr;
 			call->video_profile=make_profile(lc,call->resultdesc,stream,&used_pt);
@@ -870,7 +872,7 @@ void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_mut
 				MSWebCam *cam=lc->video_conf.device;
 				bool_t is_inactive=FALSE;
 
-				call->params.has_video=TRUE;
+				call->current_params.has_video=TRUE;
 				
 				video_stream_set_sent_video_size(call->videostream,linphone_core_get_preferred_video_size(lc));
 				video_stream_enable_self_view(call->videostream,lc->video_conf.selfview);
diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index 55e95a7fe..7c5ee9071 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -2182,9 +2182,8 @@ bool_t linphone_core_inc_invite_pending(LinphoneCore*lc){
  *
  * @return 0 if successful, -1 otherwise.
 **/
-int linphone_core_update_call(LinphoneCore *lc, LinphoneCall *call, LinphoneCallParams *params){
+int linphone_core_update_call(LinphoneCore *lc, LinphoneCall *call, const LinphoneCallParams *params){
 	int err;
-	
 	if (call->localdesc)
 		sal_media_description_unref(call->localdesc);
 	call->params=*params;
diff --git a/coreapi/linphonecore.h b/coreapi/linphonecore.h
index 219b13a7e..84e9ee3df 100644
--- a/coreapi/linphonecore.h
+++ b/coreapi/linphonecore.h
@@ -618,7 +618,7 @@ int linphone_core_pause_all_calls(LinphoneCore *lc);
 
 int linphone_core_resume_call(LinphoneCore *lc, LinphoneCall *call);
 
-int linphone_core_update_call(LinphoneCore *lc, LinphoneCall *call, LinphoneCallParams *params);
+int linphone_core_update_call(LinphoneCore *lc, LinphoneCall *call, const LinphoneCallParams *params);
 
 LinphoneCallParams *linphone_core_create_default_call_parameters(LinphoneCore *lc);
 
diff --git a/coreapi/linphonecore_jni.cc b/coreapi/linphonecore_jni.cc
index 91021d8e1..50787d7e2 100644
--- a/coreapi/linphonecore_jni.cc
+++ b/coreapi/linphonecore_jni.cc
@@ -1022,15 +1022,15 @@ extern "C" void Java_org_linphone_core_LinphoneCallParamsImpl_enableVideo(JNIEnv
 extern "C" jboolean Java_org_linphone_core_LinphoneCallParamsImpl_getVideoEnabled(JNIEnv *env, jobject thiz, jlong lcp){
 	return linphone_call_params_video_enabled((LinphoneCallParams*)lcp);
 }
-extern "C" jlong Java_org_linphone_core_LinphoneCallParamsImpl_copy(JNIEnv *env, jobject thiz, jlong lcp){
-	return (jlong) linphone_call_params_copy((LinphoneCallParams*)lcp);
+extern "C" void Java_org_linphone_core_LinphoneCallParamsImpl_destroy(JNIEnv *env, jobject thiz, jlong lc){
+	return linphone_call_params_destroy((LinphoneCallParams*)lc);
 }
 extern "C" jlong Java_org_linphone_core_LinphoneCoreImpl_createDefaultCallParams(JNIEnv *env, jobject thiz, jlong lc){
 	return (jlong) linphone_core_create_default_call_parameters((LinphoneCore*)lc);
 }
 
-extern "C" jlong Java_org_linphone_core_LinphoneCallImpl_getCurrentParams(JNIEnv *env, jobject thiz, jlong lc){
-	return (jlong) linphone_call_get_current_params((LinphoneCall*)lc);
+extern "C" jlong Java_org_linphone_core_LinphoneCallImpl_getCurrentParamsCopy(JNIEnv *env, jobject thiz, jlong lc){
+	return (jlong) linphone_call_params_copy(linphone_call_get_current_params((LinphoneCall*)lc));
 }
 
 extern "C" jlong Java_org_linphone_core_LinphoneCallImpl_enableCamera(JNIEnv *env, jobject thiz, jlong lc, jboolean b){
@@ -1046,7 +1046,7 @@ extern "C" jint Java_org_linphone_core_LinphoneCoreImpl_updateAddressWithParams(
 }
 
 extern "C" jint Java_org_linphone_core_LinphoneCoreImpl_updateCall(JNIEnv *env, jobject thiz, jlong lc, jlong call, jlong params){
-	return (jint) linphone_core_update_call((LinphoneCore *)lc, (LinphoneCall *)call, (LinphoneCallParams *)params);
+	return (jint) linphone_core_update_call((LinphoneCore *)lc, (LinphoneCall *)call, (const LinphoneCallParams *)params);
 }
 
 
diff --git a/coreapi/private.h b/coreapi/private.h
index 1203fe0fa..3a5e3483c 100644
--- a/coreapi/private.h
+++ b/coreapi/private.h
@@ -88,6 +88,7 @@ struct _LinphoneCall
 	struct _VideoStream *videostream;
 	char *refer_to;
 	LinphoneCallParams params;
+	LinphoneCallParams current_params;
 	int up_bw; /*upload bandwidth setting at the time the call is started. Used to detect if it changes during a call */
 	bool_t refer_pending;
 	bool_t media_pending;
diff --git a/java/common/org/linphone/core/LinphoneCall.java b/java/common/org/linphone/core/LinphoneCall.java
index fca8aad57..79c73a572 100644
--- a/java/common/org/linphone/core/LinphoneCall.java
+++ b/java/common/org/linphone/core/LinphoneCall.java
@@ -150,10 +150,7 @@ public interface LinphoneCall {
 	**/
 	public LinphoneCallLog getCallLog();
 
-	/**
-	 * @return parameters for this call; read only, call copy() to get a read/write version.
-	 */
-	public LinphoneCallParams getCurrentParamsReadOnly();
+	public LinphoneCallParams getCurrentParamsCopy();
 	
 	public void enableCamera(boolean enabled);
 
diff --git a/java/common/org/linphone/core/LinphoneCallParams.java b/java/common/org/linphone/core/LinphoneCallParams.java
index 30362a73b..53274e9f6 100644
--- a/java/common/org/linphone/core/LinphoneCallParams.java
+++ b/java/common/org/linphone/core/LinphoneCallParams.java
@@ -28,5 +28,4 @@ package org.linphone.core;
 public interface LinphoneCallParams {
 	void setVideoEnabled(boolean b);
 	boolean getVideoEnabled();
-	LinphoneCallParams copy();
 }