--- chan_zap.c	2005-04-22 13:39:47.051230941 +0530
+++ chan_zap.c.modified	2005-04-22 13:40:42.440951585 +0530
@@ -6867,6 +6867,30 @@
 		/* Trust PRI */
 #ifdef ZAPATA_PRI
 		if (p->pri) {
+
+			if(p->call)
+			{
+				ast_log(LOG_WARNING, "************ Call not null for %d channel on span %d, Forcing Restart ************\n",PRI_CHANNEL(channelmatch), p->pri->span);
+
+				if (p->pri && p->pri->pri) {
+					if (!pri_grab(p, p->pri)) {
+						pri_hangup(p->pri->pri, p->call, -1);
+						pri_destroycall(p->pri->pri, p->call);
+						pri_rel(p->pri);
+					} else
+						ast_log(LOG_WARNING, "Failed to grab PRI!\n");
+				} else
+					ast_log(LOG_WARNING, "The PRI Call have not been destroyed\n");
+
+				p->call = NULL;
+
+				ast_mutex_lock(&p->lock);
+				pri_reset(p->pri->pri, PVT_TO_CHANNEL(p));
+				p->resetting = 1;
+				ast_mutex_unlock(&p->lock);
+				return 0;
+			}
+
 			if (p->resetting || p->call)
 				return 0;
 			else