From 45c15e85617b61fe96eaf797c229ce7289fb0329 Mon Sep 17 00:00:00 2001
From: Russell Bryant <russell@russellbryant.com>
Date: Wed, 30 Nov 2005 14:27:59 +0000
Subject: [PATCH] do not allow an rtp message with zero type (issue #5749)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@7233 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 rtp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtp.c b/rtp.c
index 653355e08d..0c475ed980 100644
--- a/rtp.c
+++ b/rtp.c
@@ -299,7 +299,7 @@ static struct ast_frame *process_rfc2833(struct ast_rtp *rtp, unsigned char *dat
 		}
 		resp = 0;
 		duration = 0;
-	} else if(rtp->dtmfduration && (duration < rtp->dtmfduration)) {
+	} else if (rtp->resp && rtp->dtmfduration && (duration < rtp->dtmfduration)) {
 		f = send_dtmf(rtp);
 	}
 	if (!(event_end & 0x80))