Index: apps/app_dial.c
===================================================================
--- apps/app_dial.c	(revision 172508)
+++ apps/app_dial.c	(working copy)
@@ -380,12 +380,19 @@
 	struct ast_cdr *cdr = num->chan->cdr;
 
 	switch(cause) {
+//AST_CAUSE_INVALID_NUMBER_FORMAT
 	case AST_CAUSE_BUSY:
 		if (cdr)
 			ast_cdr_busy(cdr);
 		num->busy++;
 		break;
 
+	case AST_CAUSE_INVALID_NUMBER_FORMAT:
+		if (cdr)
+			ast_cdr_failed(cdr);
+		num->congestion++;
+		break;
+
 	case AST_CAUSE_CONGESTION:
 		if (cdr)
 			ast_cdr_failed(cdr);
@@ -712,6 +719,14 @@
 					ast_clear_flag64(o, DIAL_STILLGOING);
 					handle_cause(AST_CAUSE_CONGESTION, &num);
 					break;
+				case AST_CAUSE_INVALID_NUMBER_FORMAT:
+					ast_verb(3, "%s is Number invalid\n", c->name);
+					in->hangupcause = c->hangupcause;
+					ast_hangup(c);
+					c = o->chan = NULL;
+					ast_clear_flag64(o, DIAL_STILLGOING);
+					handle_cause(AST_CAUSE_CONGESTION, &num);
+					break;
 				case AST_CONTROL_RINGING:
 					ast_verb(3, "%s is ringing\n", c->name);
 					/* Setup early media if appropriate */