Make HANGUPCAUSE accessible

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1669 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_zap.c

@@ -514,6 +514,12 @@ static int hangup_pri2cause(int cause)
 			return AST_CAUSE_BUSY;
 		case PRI_CAUSE_NORMAL_CLEARING:
 			return AST_CAUSE_NORMAL;
+		case PRI_CAUSE_NORMAL_CIRCUIT_CONGESTION:
+		case PRI_CAUSE_REQUESTED_CHAN_UNAVAIL:
+			return AST_CAUSE_CONGESTION;
+		case PRI_CAUSE_UNALLOCATED:
+		case PRI_CAUSE_NUMBER_CHANGED:
+			return AST_CAUSE_UNALLOCATED;
 		default:
 			return AST_CAUSE_FAILURE;
 	}

include/asterisk/causes.h

@@ -16,5 +16,6 @@
 #define AST_CAUSE_NORMAL	1
 #define AST_CAUSE_BUSY		2
 #define AST_CAUSE_FAILURE	3
-
+#define AST_CAUSE_CONGESTION	4
+#define AST_CAUSE_UNALLOCATED	5
 

pbx.c

@@ -862,6 +862,9 @@ static void pbx_substitute_variables_temp(struct ast_channel *c,const char *var,
 	} else if (c && !strcmp(var, "UNIQUEID")) {
 	  snprintf(workspace, workspacelen -1, "%s", c->uniqueid);
 	  *ret = workspace;
+        } else if (c && !strcmp(var, "HANGUPCAUSE")) {
+          snprintf(workspace, workspacelen -1, "%i", c->hangupcause);
+          *ret = workspace;
 	} else {
 		if (c) {
 			AST_LIST_TRAVERSE(headp,variables,entries) {