Index: channels/chan_zap.c
===================================================================
RCS file: /usr/cvsroot/asterisk/channels/chan_zap.c,v
retrieving revision 1.222
diff -u -r1.222 chan_zap.c
--- channels/chan_zap.c	8 May 2004 14:24:58 -0000	1.222
+++ channels/chan_zap.c	19 May 2004 22:16:05 -0000
@@ -593,6 +593,8 @@
 			return PRI_CAUSE_USER_BUSY;
 		case AST_CAUSE_UNALLOCATED:
 			return PRI_CAUSE_UNALLOCATED;
+		case AST_CAUSE_CONGESTION:
+			return PRI_CAUSE_NORMAL_CIRCUIT_CONGESTION;
 		case AST_CAUSE_NORMAL:
 		default:
 			return PRI_CAUSE_NORMAL_CLEARING;
@@ -3957,6 +3959,7 @@
 			res = 0;
 			break;
 		case AST_CONTROL_CONGESTION:
+			chan->hangupcause = AST_CAUSE_CONGESTION;
 			res = tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_CONGESTION);
 			break;
 		case AST_CONTROL_RADIO_KEY: