diff --git a/src/include/private/switch_core_pvt.h b/src/include/private/switch_core_pvt.h
index 82631490d2..ef1fe80fed 100644
--- a/src/include/private/switch_core_pvt.h
+++ b/src/include/private/switch_core_pvt.h
@@ -127,6 +127,7 @@ struct switch_core_session {
 	switch_mutex_t *codec_read_mutex;
 	switch_mutex_t *codec_write_mutex;
 	switch_thread_cond_t *cond;
+	switch_mutex_t *frame_read_mutex;
 
 	switch_thread_rwlock_t *rwlock;
 
diff --git a/src/switch_core.c b/src/switch_core.c
index cbaad6a753..fe0ffcbaba 100644
--- a/src/switch_core.c
+++ b/src/switch_core.c
@@ -308,7 +308,7 @@ SWITCH_DECLARE(char *) switch_core_get_uuid(void)
 }
 
 
-static void *switch_core_service_thread(switch_thread_t *thread, void *obj)
+static void *SWITCH_THREAD_FUNC switch_core_service_thread(switch_thread_t *thread, void *obj)
 {
 	switch_core_session_t *session = obj;
 	switch_channel_t *channel;
@@ -321,6 +321,8 @@ static void *switch_core_service_thread(switch_thread_t *thread, void *obj)
 		return NULL;
 	}
 
+	switch_mutex_lock(session->frame_read_mutex);
+
 	channel = switch_core_session_get_channel(session);
 
 	switch_channel_set_flag(channel, CF_SERVICE);
@@ -336,7 +338,10 @@ static void *switch_core_service_thread(switch_thread_t *thread, void *obj)
 		}
 	}
 
+	switch_mutex_unlock(session->frame_read_mutex);
+
 	switch_core_session_rwunlock(session);
+
 	return NULL;
 }
 
@@ -360,7 +365,7 @@ SWITCH_DECLARE(void) switch_core_service_session(switch_core_session_t *session)
 	channel = switch_core_session_get_channel(session);
 	switch_assert(channel);
 
-	switch_core_session_launch_thread(session, switch_core_service_thread, session);
+	switch_core_session_launch_thread(session, (void *(*)(switch_thread_t *,void *))switch_core_service_thread, session);
 }
 
 /* This function abstracts the thread creation for modules by allowing you to pass a function ptr and
diff --git a/src/switch_core_session.c b/src/switch_core_session.c
index 2cbed02163..9dd3208d93 100644
--- a/src/switch_core_session.c
+++ b/src/switch_core_session.c
@@ -1558,6 +1558,7 @@ SWITCH_DECLARE(switch_core_session_t *) switch_core_session_request_uuid(switch_
 	switch_mutex_init(&session->resample_mutex, SWITCH_MUTEX_NESTED, session->pool);
 	switch_mutex_init(&session->codec_read_mutex, SWITCH_MUTEX_NESTED, session->pool);
 	switch_mutex_init(&session->codec_write_mutex, SWITCH_MUTEX_NESTED, session->pool);
+	switch_mutex_init(&session->frame_read_mutex, SWITCH_MUTEX_NESTED, session->pool);
 	switch_thread_rwlock_create(&session->bug_rwlock, session->pool);
 	switch_thread_cond_create(&session->cond, session->pool);
 	switch_thread_rwlock_create(&session->rwlock, session->pool);