--- chan_iax2.c	2007-12-19 01:48:36.097000000 -0300
+++ chan_iax2_patched.c	2008-01-16 18:48:36.187500000 -0300
@@ -2530,7 +2530,9 @@ static int schedule_delivery(struct iax_
 	int type, len;
 	int ret;
 	int needfree = 0;
-
+	struct ast_channel * owner = NULL;
+	struct ast_channel * bridge = NULL;
+	
 	/* Attempt to recover wrapped timestamps */
 	unwrap_timestamp(fr);
 
@@ -2562,11 +2564,13 @@ static int schedule_delivery(struct iax_
 		return -1;
 	}
 
+	owner = iaxs[fr->callno]->owner;
+	if (owner) {
+		bridge = ast_bridged_channel(owner);
+	}
 	/* if the user hasn't requested we force the use of the jitterbuffer, and we're bridged to
 	 * a channel that can accept jitter, then flush and suspend the jb, and send this frame straight through */
-	if( (!ast_test_flag(iaxs[fr->callno], IAX_FORCEJITTERBUF)) &&
-	    iaxs[fr->callno]->owner && ast_bridged_channel(iaxs[fr->callno]->owner) &&
-	    (ast_bridged_channel(iaxs[fr->callno]->owner)->tech->properties & AST_CHAN_TP_WANTSJITTER)) {
+	if( (!ast_test_flag(iaxs[fr->callno], IAX_FORCEJITTERBUF)) && owner && bridge && bridge->tech->properties & AST_CHAN_TP_WANTSJITTER)) {
 		jb_frame frame;
 
 		/* deliver any frames in the jb */