From 7003350768ed2f317fad1f1a81779294710df125 Mon Sep 17 00:00:00 2001
From: markster <markster@5390a7c7-147a-4af0-8ec9-7488f05a26cb>
Date: Thu, 15 Apr 2004 22:23:43 +0000
Subject: Debounce red alarm to prevent red alarm oscillation

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@365 5390a7c7-147a-4af0-8ec9-7488f05a26cb
---
 wct4xxp.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/wct4xxp.c b/wct4xxp.c
index b19e27d..da87006 100755
--- a/wct4xxp.c
+++ b/wct4xxp.c
@@ -90,6 +90,7 @@ struct t4 {
 	int syncs[4];			/* sync sources */
 	int psyncs[4];			/* span-relative sync sources */
 	int alarmtimer[4];		/* Alarm timer */
+	int redalarms[4];
 	int blinktimer;
 #ifdef FANCY_ALARM
 	int alarmpos;
@@ -1265,8 +1266,13 @@ static void __t4_check_alarms(struct t4 *wc, int span)
 			alarms |= ZT_ALARM_NOTOPEN;
 	}
 
-	if (c & 0xa0) 
-		alarms |= ZT_ALARM_RED;
+	if (c & 0xa0) {
+		if (wc->redalarms[span] > 10) 
+			alarms |= ZT_ALARM_RED;
+		else
+			wc->redalarms[span]++;
+	} else
+		wc->redalarms[span] = 0;
 	if (c & 0x4)
 		alarms |= ZT_ALARM_BLUE;
 	/* Keep track of recovering */
-- 
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