diff --git a/coreapi/linphonecore.c b/coreapi/linphonecore.c
index cca84fd23..ad7b151ab 100644
--- a/coreapi/linphonecore.c
+++ b/coreapi/linphonecore.c
@@ -2346,29 +2346,42 @@ LinphoneCore *_linphone_core_new_with_config(LinphoneCoreCbs *cbs, struct _LpCon
 	return core;
 }
 
-LinphoneCore *linphone_core_new_with_config(const LinphoneCoreVTable *vtable, struct _LpConfig *config, void *userdata) {
+static LinphoneCore *_linphone_core_new_with_config_and_start (
+	const LinphoneCoreVTable *vtable,
+	LinphoneConfig *config,
+	void *userdata,
+	bool_t automatically_start
+) {
 	LinphoneCoreCbs *cbs = linphone_factory_create_core_cbs(linphone_factory_get());
 	LinphoneCoreVTable *local_vtable = linphone_core_v_table_new();
 	LinphoneCore *core = NULL;
 	if (vtable != NULL) *local_vtable = *vtable;
 	_linphone_core_cbs_set_v_table(cbs, local_vtable, TRUE);
-	core = _linphone_core_new_with_config(cbs, config, userdata, NULL, TRUE);
+	core = _linphone_core_new_with_config(cbs, config, userdata, NULL, automatically_start);
 	linphone_core_cbs_unref(cbs);
 	return core;
 }
 
-static LinphoneCore *_linphone_core_new(const LinphoneCoreVTable *vtable,
-						const char *config_path, const char *factory_config_path, void * userdata) {
-	LinphoneCore *lc;
-	LpConfig *config = lp_config_new_with_factory(config_path, factory_config_path);
-	lc=linphone_core_new_with_config(vtable, config, userdata);
-	lp_config_unref(config);
+LinphoneCore *linphone_core_new_with_config(const LinphoneCoreVTable *vtable, struct _LpConfig *config, void *userdata) {
+	return _linphone_core_new_with_config_and_start(vtable, config, userdata, TRUE);
+}
+
+LinphoneCore *_linphone_core_new (
+	const LinphoneCoreVTable *vtable,
+	const char *config_path,
+	const char *factory_config_path,
+	void * userdata,
+	bool_t automatically_start
+) {
+	LinphoneConfig *config = lp_config_new_with_factory(config_path, factory_config_path);
+	LinphoneCore *lc = _linphone_core_new_with_config_and_start(vtable, config, userdata, automatically_start);
+	linphone_config_unref(config);
 	return lc;
 }
 
 LinphoneCore *linphone_core_new(const LinphoneCoreVTable *vtable,
 						const char *config_path, const char *factory_config_path, void * userdata) {
-	return _linphone_core_new(vtable, config_path, factory_config_path, userdata);
+	return _linphone_core_new(vtable, config_path, factory_config_path, userdata, TRUE);
 }
 
 LinphoneCore *linphone_core_ref(LinphoneCore *lc) {
diff --git a/coreapi/tester_utils.h b/coreapi/tester_utils.h
index f6d836b5f..4fd79a951 100644
--- a/coreapi/tester_utils.h
+++ b/coreapi/tester_utils.h
@@ -45,6 +45,7 @@ typedef enum _LinphoneProxyConfigAddressComparisonResult{
 extern "C" {
 #endif
 
+LINPHONE_PUBLIC LinphoneCore *_linphone_core_new (const LinphoneCoreVTable *vtable, const char *config_path, const char *factory_config_path, void * userdata, bool_t automatically_start);
 LINPHONE_PUBLIC LinphoneVcardContext *linphone_core_get_vcard_context(const LinphoneCore *lc);
 LINPHONE_PUBLIC bool_t linphone_core_rtcp_enabled(const LinphoneCore *lc);
 LINPHONE_PUBLIC void linphone_core_get_local_ip(LinphoneCore *lc, int af, const char *dest, char *result);
diff --git a/tester/tester.c b/tester/tester.c
index 04e0456bb..f325acc93 100644
--- a/tester/tester.c
+++ b/tester/tester.c
@@ -155,13 +155,13 @@ LinphoneCore* configure_lc_from(LinphoneCoreVTable* v_table, const char* path, c
 	dnsuserhostspath = userhostsfile[0]=='/' ? ms_strdup(userhostsfile) : ms_strdup_printf("%s/%s", path, userhostsfile);
 
 
-	if( config != NULL ) {
+	if (config) {
 		lp_config_set_string(config, "sound", "remote_ring", ringbackpath);
 		lp_config_set_string(config, "sound", "local_ring" , ringpath);
 		lp_config_set_string(config, "sip",   "root_ca"    , rootcapath);
-		lc = linphone_core_new_with_config(v_table, config, user_data);
+		lc = linphone_factory_create_core_with_config_3(linphone_factory_get(), config, NULL);
 	} else {
-		lc = linphone_core_new(v_table,NULL,(filepath!=NULL&&filepath[0]!='\0') ? filepath : NULL, user_data);
+		lc = _linphone_core_new(v_table,NULL,(filepath!=NULL&&filepath[0]!='\0') ? filepath : NULL, user_data, FALSE);
 
 		linphone_core_set_ring(lc, ringpath);
 		linphone_core_set_ringback(lc, ringbackpath);
@@ -391,6 +391,8 @@ void linphone_core_manager_start(LinphoneCoreManager *mgr, bool_t check_for_prox
 	LinphoneProxyConfig* proxy;
 	int proxy_count;
 
+	linphone_core_start(mgr->lc);
+
 	/*BC_ASSERT_EQUAL(bctbx_list_size(linphone_core_get_proxy_config_list(lc)),proxy_count, int, "%d");*/
 	if (check_for_proxies){ /**/
 		proxy_count=(int)bctbx_list_size(linphone_core_get_proxy_config_list(mgr->lc));