diff --git a/coreapi/ec-calibrator.c b/coreapi/ec-calibrator.c
index 4c8a37586..38b83f0d6 100644
--- a/coreapi/ec-calibrator.c
+++ b/coreapi/ec-calibrator.c
@@ -23,15 +23,18 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "mediastreamer2/mstonedetector.h"
 #include "mediastreamer2/dtmfgen.h"
 
-
+#include "lpconfig.h"
 
 
 
 static void ecc_init_filters(EcCalibrator *ecc){
+	unsigned int rate;
 	ecc->ticker=ms_ticker_new();
 
 	ecc->sndread=ms_snd_card_create_reader(ecc->play_card);
+	ms_filter_call_method(ecc->sndread,MS_FILTER_SET_SAMPLE_RATE,&ecc->rate);
 	ecc->det=ms_filter_new(MS_TONE_DETECTOR_ID);
+	ms_filter_call_method(ecc->det,MS_FILTER_SET_SAMPLE_RATE,&ecc->rate);
 	ecc->rec=ms_filter_new(MS_FILE_REC_ID);
 
 	ms_filter_link(ecc->sndread,0,ecc->det,0);
@@ -39,14 +42,17 @@ static void ecc_init_filters(EcCalibrator *ecc){
 
 	ecc->play=ms_filter_new(MS_FILE_PLAYER_ID);
 	ecc->gen=ms_filter_new(MS_DTMF_GEN_ID);
+	ms_filter_call_method(ecc->gen,MS_FILTER_SET_SAMPLE_RATE,&ecc->rate);
 	ecc->resampler=ms_filter_new(MS_RESAMPLE_ID);
 	ecc->sndwrite=ms_snd_card_create_writer(ecc->capt_card);
 
 	ms_filter_link(ecc->play,0,ecc->gen,0);
 	ms_filter_link(ecc->gen,0,ecc->resampler,0);
 	ms_filter_link(ecc->resampler,0,ecc->sndwrite,0);
-	unsigned int rate;
+
+	ms_filter_call_method(ecc->sndwrite,MS_FILTER_SET_SAMPLE_RATE,&ecc->rate);
 	ms_filter_call_method(ecc->sndwrite,MS_FILTER_GET_SAMPLE_RATE,&rate);
+	ms_filter_call_method(ecc->resampler,MS_FILTER_SET_SAMPLE_RATE,&ecc->rate);
 	ms_filter_call_method(ecc->resampler,MS_FILTER_SET_OUTPUT_SAMPLE_RATE,&rate);
 
 	ms_ticker_attach(ecc->ticker,ecc->play);
@@ -149,9 +155,10 @@ static void  * ecc_thread(void *p){
 	return NULL;
 }
 
-EcCalibrator * ec_calibrator_new(MSSndCard *play_card, MSSndCard *capt_card, LinphoneEcCalibrationCallback cb, void *cb_data ){
+EcCalibrator * ec_calibrator_new(MSSndCard *play_card, MSSndCard *capt_card, unsigned int rate, LinphoneEcCalibrationCallback cb, void *cb_data ){
 	EcCalibrator *ecc=ms_new0(EcCalibrator,1);
 
+	ecc->rate=rate;
 	ecc->cb=cb;
 	ecc->cb_data=cb_data;
 	ecc->capt_card=capt_card;
@@ -174,6 +181,7 @@ int linphone_core_start_echo_calibration(LinphoneCore *lc, LinphoneEcCalibration
 		ms_error("Echo calibration is still on going !");
 		return -1;
 	}
-	lc->ecc=ec_calibrator_new(lc->sound_conf.play_sndcard,lc->sound_conf.capt_sndcard,cb,cb_data);
+	unsigned int rate = lp_config_get_int(lc->config,"sound","echo_cancellation_rate",8000);
+	lc->ecc=ec_calibrator_new(lc->sound_conf.play_sndcard,lc->sound_conf.capt_sndcard,rate,cb,cb_data);
 	return 0;
 }
diff --git a/coreapi/private.h b/coreapi/private.h
index aea7e2e42..b9d79776e 100644
--- a/coreapi/private.h
+++ b/coreapi/private.h
@@ -472,6 +472,7 @@ struct _EcCalibrator{
 	int sent_count;
 	int64_t acc;
 	int delay;
+	unsigned int rate;
 	LinphoneEcCalibratorStatus status;
 };
 
diff --git a/coreapi/test_ecc.c b/coreapi/test_ecc.c
index 7553c2018..43ae0dcb2 100644
--- a/coreapi/test_ecc.c
+++ b/coreapi/test_ecc.c
@@ -27,10 +27,21 @@ static void calibration_finished(LinphoneCore *lc, LinphoneEcCalibratorStatus st
 	if (status==LinphoneEcCalibratorDone) ms_message("Measured delay is %i",delay);
 }
 
+
+static char config_file[1024];
+void parse_args(int argc, char *argv[]){
+	if (argc != 3 || strncmp("-c",argv[1], 2) || access(argv[2],F_OK)!=0) {
+		printf("Usage: test_ecc [-c config_file] where config_file will be written with the detected value\n");
+		exit(-1);
+	}
+	strncpy(config_file,argv[2],1024);
+}
+
 int main(int argc, char *argv[]){
+	if (argc>1) parse_args(argc,argv);
 	int count=0;
 	LinphoneCoreVTable vtable={0};
-	LinphoneCore *lc=linphone_core_new(&vtable,NULL,NULL,NULL);
+	LinphoneCore *lc=linphone_core_new(&vtable,config_file,NULL,NULL);
 	
 	linphone_core_enable_logs(NULL);
 
diff --git a/mediastreamer2 b/mediastreamer2
index 0781bd574..45a3e4586 160000
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit 0781bd574fc09a43bcadcb55d8f1563d6493629c
+Subproject commit 45a3e458669ae7d3f5537665d7549d82469cf96f