--- chan_zap.c.orig	2006-02-11 02:43:23.000000000 +0530
+++ chan_zap.c.modified	2006-02-11 02:44:17.000000000 +0530
@@ -6315,7 +6315,7 @@
 		case SIG_SF_FEATB:
 		case SIG_SF:
 				/* Check for callerid, digits, etc */
-				chan = zt_new(i, AST_STATE_RING, 0, SUB_REAL, 0, 0);
+				chan = zt_new(i, AST_STATE_PRERING, 0, SUB_REAL, 0, 0);
 				if (chan && ast_pthread_create(&threadid, &attr, ss_thread, chan)) {
 					ast_log(LOG_WARNING, "Unable to start simple switch thread on channel %d\n", i->channel);
 					res = tone_zone_play_tone(i->subs[SUB_REAL].zfd, ZT_TONE_CONGESTION);