diff --git a/libpri.h b/libpri.h
index 878a3f2..f4ef1eb 100755
--- a/libpri.h
+++ b/libpri.h
@@ -487,6 +487,9 @@ extern int pri_hangup(struct pri *pri, q931_call *call, int cause);
 #define PRI_DESTROYCALL
 extern void pri_destroycall(struct pri *pri, q931_call *call);
 
+#define PRI_RESTART
+extern int pri_restart(struct pri *pri);
+
 extern int pri_reset(struct pri *pri, int channel);
 
 /* Create a new call */
diff --git a/pri.c b/pri.c
index 0493dac..64fe5f8 100755
--- a/pri.c
+++ b/pri.c
@@ -247,6 +247,16 @@ static struct pri *__pri_new(int fd, int node, int switchtype, struct pri *maste
 	return p;
 }
 
+int pri_restart(struct pri *pri)
+{
+	/* Restart Q.921 layer */
+	if (pri) {
+		q921_reset(pri);
+		q921_start(pri, pri->localtype == PRI_CPE);	
+	}
+	return 0;
+}
+
 struct pri *pri_new(int fd, int nodetype, int switchtype)
 {
 	return __pri_new(fd, nodetype, switchtype, NULL, __pri_read, __pri_write, NULL);