Add discriminator for when ring pulse alert signal is used to preface MWI spills

This prevents the situation when MWI messages are added to caller ID spills causing the channel to be hung up


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@169153 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 24 insertions, 10 deletions

diff --git a/channels/chan_dahdi.c b/channels/chan_dahdi.c
index 53df3f792..23386364e 100644
--- a/channels/chan_dahdi.c
+++ b/channels/chan_dahdi.c
@@ -634,6 +634,7 @@ static struct dahdi_pvt {
 	unsigned int transfertobusy:1;			/*!< allow flash-transfers to busy channels */
 	unsigned int mwimonitor_neon:1;			/*!< monitor this FXO port for neon type MWI indication from other end */
 	unsigned int mwimonitor_fsk:1;			/*!< monitor this FXO port for fsk MWI indication from other end */
+	unsigned int mwimonitor_rpas:1;			/*!< monitor this FXO port for rpas precursor to fsk MWI indication */
 	unsigned int mwimonitoractive:1;		/*!< an MWI monitor thread is currently active */
 	unsigned int mwisendactive:1; 			/*!< a MWI message sending thread is active */
 	/* Channel state or unavilability flags */
@@ -7507,12 +7508,18 @@ static void *ss_thread(void *data)
 		if (flags & CID_MSGWAITING) {
 			ast_log(LOG_NOTICE, "MWI: Channel %d message waiting!\n", p->channel);
 			notify_message(p->mailbox, 1);
-			ast_hangup(chan);
+			/* If generated using Ring Pulse Alert, then ring has been answered as a call and needs to be hungup */
+			if (p->mwimonitor_rpas) {
+				ast_hangup(chan);
+			}
 			return NULL;
 		} else if (flags & CID_NOMSGWAITING) {
 			ast_log(LOG_NOTICE, "MWI: Channel %d no message waiting!\n", p->channel);
 			notify_message(p->mailbox, 0);
-			ast_hangup(chan);
+			/* If generated using Ring Pulse Alert, then ring has been answered as a call and needs to be hungup */
+			if (p->mwimonitor_rpas) {
+				ast_hangup(chan);
+			}
 			return NULL;
 		}
 
@@ -8849,6 +8856,7 @@ static struct dahdi_pvt *mkintf(int channel, const struct dahdi_chan_conf *conf,
 		if (chan_sig & __DAHDI_SIG_FXS) {
 			tmp->mwimonitor_fsk = conf->chan.mwimonitor_fsk;
 			tmp->mwimonitor_neon = conf->chan.mwimonitor_neon;
+			tmp->mwimonitor_rpas = conf->chan.mwimonitor_rpas;
 		}
 		tmp->sig = chan_sig;
 		tmp->outsigmod = conf->chan.outsigmod;
@@ -14103,16 +14111,22 @@ static int process_dahdi(struct dahdi_chan_conf *confp, const char *cat, struct
 		} else if (!strcasecmp(v->name, "transfertobusy")) {
 			confp->chan.transfertobusy = ast_true(v->value);
 		} else if (!strcasecmp(v->name, "mwimonitor")) {
-			if (!strcasecmp(v->value, "neon")) {
+			confp->chan.mwimonitor_neon = 0;
+			confp->chan.mwimonitor_fsk  = 0;
+			confp->chan.mwimonitor_rpas = 0;
+			if (strcasestr(v->value, "fsk")) {
+				confp->chan.mwimonitor_fsk = 1;
+			}
+			if (strcasestr(v->value, "rpas")) {
+				confp->chan.mwimonitor_rpas = 1;
+			}
+			if (strcasestr(v->value, "neon")) {
 				confp->chan.mwimonitor_neon = 1;
-				confp->chan.mwimonitor_fsk = 0;
-			} else {
-				confp->chan.mwimonitor_neon = 0;
-				if (!strcasecmp(v->value, "fsk"))
-					confp->chan.mwimonitor_fsk = 1;
-				else 
-					confp->chan.mwimonitor_fsk = ast_true(v->value) ? 1 : 0;
 			}
+			/* If set to true or yes, assume that simple fsk is desired */
+			if (ast_true(v->value)) {
+				confp->chan.mwimonitor_fsk = 1;
+			} 
 		} else if (!strcasecmp(v->name, "cid_rxgain")) {
 			if (sscanf(v->value, "%f", &confp->chan.cid_rxgain) != 1) {
 				ast_log(LOG_WARNING, "Invalid cid_rxgain: %s at line %d.\n", v->value, v->lineno);