From: Joshua Colp <jcolp@digium.com>
Date: Tue, 9 Dec 2008 19:47:07 +0000 (+0000)
Subject: Make sure that the timestamp for DTMF is not the same as the previous voice frame... 
X-Git-Tag: 1.4.23-rc3~3^2~45
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=114c6591954efe32b98c73aca166fcb5e5beab57;p=thirdparty%2Fasterisk.git

Make sure that the timestamp for DTMF is not the same as the previous voice frame and do not send audio when transmitting DTMF as this confuses some equipment.
(closes issue #13209)
Reported by: ip-rob
Patches:
      13209.diff uploaded by file (license 11)
Tested by: ip-rob, bujones


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@162204 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/main/rtp.c b/main/rtp.c
index 2cdfeedc1e..c11d4cecf3 100644
--- a/main/rtp.c
+++ b/main/rtp.c
@@ -2215,6 +2215,7 @@ int ast_rtp_senddigit_begin(struct ast_rtp *rtp, char digit)
 
 	rtp->dtmfmute = ast_tvadd(ast_tvnow(), ast_tv(0, 500000));
 	rtp->send_duration = 160;
+	rtp->lastdigitts = rtp->lastts + rtp->send_duration;
 	
 	/* Get a pointer to the header */
 	rtpheader = (unsigned int *)data;
@@ -2334,10 +2335,9 @@ int ast_rtp_senddigit_end(struct ast_rtp *rtp, char digit)
 				    ast_inet_ntoa(rtp->them.sin_addr),
 				    ntohs(rtp->them.sin_port), rtp->send_payload, rtp->seqno, rtp->lastdigitts, res - hdrlen);
 	}
+	rtp->lastts += rtp->send_duration;
 	rtp->sending_digit = 0;
 	rtp->send_digit = 0;
-	/* Increment lastdigitts */
-	rtp->lastdigitts += 960;
 	rtp->seqno++;
 
 	return res;
@@ -2621,6 +2621,10 @@ static int ast_rtp_raw_write(struct ast_rtp *rtp, struct ast_frame *f, int codec
 	int pred;
 	int mark = 0;
 
+	if (rtp->sending_digit) {
+		return 0;
+	}
+
 	ms = calc_txstamp(rtp, &f->delivery);
 	/* Default prediction */
 	if (f->frametype == AST_FRAME_VOICE) {