Something

--- /home/efutch/asterisk/1.2.13/asterisk-1.2.13/rtp.c	2006-10-28 13:52:20.000000000 -0400
+++ rtp.c	2006-12-29 15:28:29.000000000 -0500
@@ -290,21 +290,13 @@
 	}
 	if (rtp->resp && (rtp->resp != resp)) {
 		f = send_dtmf(rtp);
-	} else if(event_end & 0x80) {
-		if (rtp->resp) {
-			if(rtp->lasteventendseqn != seqno) {
-				f = send_dtmf(rtp);
-				rtp->lasteventendseqn = seqno;
-			}
-			rtp->resp = 0;
-		}
-		resp = 0;
-		duration = 0;
-	} else if (rtp->resp && rtp->dtmfduration && (duration < rtp->dtmfduration)) {
+	} else if (rtp->resp==0 && resp && !(event_end & 0x80)) {
+		rtp->resp = resp;
 		f = send_dtmf(rtp);
-	}
-	if (!(event_end & 0x80))
 		rtp->resp = resp;
+	} else if (event_end & 0x80) {
+		rtp->resp = 0;
+	}
 	rtp->dtmfcount = dtmftimeout;
 	rtp->dtmfduration = duration;
 	return f;