From 134e6180c55d20b8dfa7068397936d0903d60a44 Mon Sep 17 00:00:00 2001
From: Mark Spencer <markster@digium.com>
Date: Sun, 7 Nov 2004 16:21:01 +0000
Subject: Disable echo canceller for digital calls (bug #2785), fix build on
 MacOSX (bug #2803)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@4170 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_zap.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'channels')

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index 4644bf095..2a8b95d74 100755
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -1213,11 +1213,17 @@ static void zt_enable_ec(struct zt_pvt *p)
 {
 	int x;
 	int res;
+	if (!p)
+		return;
 	if (p->echocanon) {
 		ast_log(LOG_DEBUG, "Echo cancellation already on\n");
 		return;
 	}
-	if (p && p->echocancel) {
+	if (p->digital) {
+		ast_log(LOG_DEBUG, "Echo cancellation isn't required on digital connection\n");
+		return;
+	}
+	if (p->echocancel) {
 		if (p->sig == SIG_PRI) {
 			x = 1;
 			res = ioctl(p->subs[SUB_REAL].zfd, ZT_AUDIOMODE, &x);
-- 
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