diff -Nru asterisk-1.2.27/channels/chan_zap.c asterisk-1.2.27-cnet/channels/chan_zap.c
--- asterisk-1.2.27/channels/chan_zap.c	2007-08-07 12:44:04.000000000 -0500
+++ asterisk-1.2.27-cnet/channels/chan_zap.c	2008-04-03 14:55:05.000000000 -0500
@@ -536,6 +536,7 @@
 
 	int priindication_oob;
 	int radio;
+	int hearpulsing;	/* (CNET) FXO pulsing audible to caller */
 };
 
 /** returns a new zt_chan_conf with default values (by-value) */
@@ -665,7 +666,10 @@
 		 * kept as the one without the comma. for the moment, 
 		 * until we add all fields.
 		 */
-		.radio = 0
+		.radio = 0,
+
+		/* (CNET) Make FXO pulsing audible */
+		.hearpulsing = 0
 	};
 
 	return chan_conf;
@@ -750,6 +754,7 @@
 	unsigned int r2blocked:1;
 	unsigned int sigchecked:1;
 #endif
+	unsigned int hearpulsing:1;	/* (CNET) FXO pulsing audible to caller */
 
 	struct zt_distRings drings;
 
@@ -4810,8 +4815,9 @@
 #if 0
 	ast_log(LOG_DEBUG, "Read %d of voice on %s\n", p->subs[index].f.datalen, ast->name);
 #endif	
-	if (p->dialing || /* Transmitting something */
-	   (index && (ast->_state != AST_STATE_UP)) || /* Three-way or callwait that isn't up */
+	/* (CNET) Let audio through when FXO is dialing */
+	if ((!p->hearpulsing && (p->dialing || /* Transmitting something */
+	   (index && (ast->_state != AST_STATE_UP)))) || /* Three-way or callwait that isn't up */
 	   ((index == SUB_CALLWAIT) && !p->subs[SUB_CALLWAIT].inthreeway) /* Inactive and non-confed call-wait */
 	   ) {
 		/* Whoops, we're still dialing, or in a state where we shouldn't transmit....
@@ -5425,7 +5431,7 @@
 			if (len && !ast_ignore_pattern(chan->context, exten))
 				tone_zone_play_tone(p->subs[index].zfd, -1);
 			else
-				tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALTONE);
+				tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_SECONDDIALTONE);	/* (CNET) Secondary Dialtone */
 			if (ast_exists_extension(chan, chan->context, exten, 1, p->cid_num))
 				timeout = matchdigittimeout;
 			else
@@ -5716,7 +5722,7 @@
 			if (!ast_ignore_pattern(chan->context, exten))
 				tone_zone_play_tone(p->subs[index].zfd, -1);
 			else
-				tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_DIALTONE);
+				tone_zone_play_tone(p->subs[index].zfd, ZT_TONE_SECONDDIALTONE);	/* (CNET) Secondary Dialtone */
 			if (ast_exists_extension(chan, chan->context, exten, 1, p->cid_num) && strcmp(exten, ast_parking_ext())) {
 				if (!res || !ast_matchmore_extension(chan, chan->context, exten, 1, p->cid_num)) {
 					if (getforward) {
@@ -7331,6 +7337,7 @@
 		tmp->use_callingpres = chan_conf.use_callingpres;
 		tmp->priindication_oob = chan_conf.priindication_oob;
 		tmp->priexclusive = chan_conf.priexclusive;
+		tmp->hearpulsing = chan_conf.hearpulsing;	/* (CNET) Make FXO pulsing audible */
 		if (tmp->usedistinctiveringdetection) {
 			if (!tmp->use_callerid) {
 				ast_log(LOG_NOTICE, "Distinctive Ring detect requires 'usecallerid' be on\n");
@@ -9854,6 +9861,7 @@
 			ast_cli(fd, "Fax Handled: %s\n", tmp->faxhandled ? "yes" : "no");
 			ast_cli(fd, "Pulse phone: %s\n", tmp->pulsedial ? "yes" : "no");
 			ast_cli(fd, "Echo Cancellation: %d taps%s, currently %s\n", tmp->echocancel, tmp->echocanbridged ? "" : " unless TDM bridged", tmp->echocanon ? "ON" : "OFF");
+			ast_cli(fd, "Caller Hears Pulsing: %s\n", tmp->hearpulsing ? "yes" : "no");	/* (CNET) */
 			if (tmp->master)
 				ast_cli(fd, "Master Channel: %d\n", tmp->master->channel);
 			for (x=0;x<MAX_SLAVES;x++) {
@@ -10675,6 +10683,9 @@
 			chan_conf.hanguponpolarityswitch = ast_true(v->value);
 		} else if (!strcasecmp(v->name, "sendcalleridafter")) {
 			chan_conf.sendcalleridafter = atoi(v->value);
+		} else if(!strcasecmp(v->name, "hearpulsing")) {
+			/* (CNET) FXO pulsing audible to caller */
+			chan_conf.hearpulsing = ast_true(v->value);
 		} else if(!reload){ 
 			 if (!strcasecmp(v->name, "signalling")) {
 				if (!strcasecmp(v->value, "em")) {
diff -Nru asterisk-1.2.27/Makefile asterisk-1.2.27-cnet/Makefile
--- asterisk-1.2.27/Makefile	2007-07-16 13:33:02.000000000 -0500
+++ asterisk-1.2.27-cnet/Makefile	2008-04-03 14:55:05.000000000 -0500
@@ -336,6 +336,9 @@
   endif
 endif
 
+# mark as a CNET version
+ASTERISKVERSION:=${ASTERISKVERSION}-cnet
+
 ASTCFLAGS+= $(DEBUG_THREADS)
 ASTCFLAGS+= $(TRACE_FRAMES)
 ASTCFLAGS+= $(MALLOC_DEBUG)
diff -Nru asterisk-1.2.27/READMEFIRST.cnet asterisk-1.2.27-cnet/READMEFIRST.cnet
--- asterisk-1.2.27/READMEFIRST.cnet	1969-12-31 18:00:00.000000000 -0600
+++ asterisk-1.2.27-cnet/READMEFIRST.cnet	2008-04-03 15:03:43.000000000 -0500
@@ -0,0 +1,15 @@
+asterisk-cnet: Asterisk modified for antique telephony purposes.
+
+Modifications by Russ Price <kxt@fubegra.net>, with help from Max Parke.
+
+This is a modified version of Digium's Asterisk that provides a couple
+of features not provided in conventional Asterisk:
+
+  * An option to allow incoming callers to hear a Zap channel pick up
+    an FXO port and dial into a switch
+  * A distinctive dial tone when using the "ignorepat" option in
+    extensions.conf.
+
+NOTE!  This version MUST be used with the modified Zaptel driver
+available at <http://cnet.fubegra.net>.  See the READMEFIRST.cnet file
+in the zaptel-cnet distribution for further details.