diff -Naur asterisk.orig/channels/chan_zap.c asterisk/channels/chan_zap.c
--- asterisk.orig/channels/chan_zap.c	2004-06-25 19:59:55.000000000 +0300
+++ asterisk/channels/chan_zap.c	2004-06-25 20:00:06.000000000 +0300
@@ -195,6 +195,8 @@
 
 static int echotraining;
 
+static int pulse;
+
 static int echocanbridged = 0;
 
 static int busydetect = 0;
@@ -475,6 +477,7 @@
 	int callwaitrings;
 	int echocancel;
 	int echotraining;
+	int pulse;
 	int echocanbridged;
 	int echocanon;
 	int echobreak;
@@ -1644,6 +1647,9 @@
 		if (p->sig == SIG_FEATB) {
 			snprintf(p->dop.dialstr, sizeof(p->dop.dialstr), "M*%s#", c + p->stripmsd);
 		} else 
+ 		if(p->pulse)
+ 			snprintf(p->dop.dialstr, sizeof(p->dop.dialstr), "P%sw", c + p->stripmsd);
+ 		else
 			snprintf(p->dop.dialstr, sizeof(p->dop.dialstr), "T%sw", c + p->stripmsd);
 		if (strlen(p->dop.dialstr) > 4) {
 			memset(p->echorest, 'w', sizeof(p->echorest) - 1);
@@ -6034,6 +6040,7 @@
 		tmp->callreturn = callreturn;
 		tmp->echocancel = echocancel;
 		tmp->echotraining = echotraining;
+		tmp->pulse = pulse;
 		tmp->echocanbridged = echocanbridged;
 		tmp->busydetect = busydetect;
 		tmp->busycount = busycount;
@@ -8617,6 +8624,8 @@
 				echotraining = 0;
 		} else if (!strcasecmp(v->name, "hidecallerid")) {
 			hidecallerid = ast_true(v->value);
+ 		} else if (!strcasecmp(v->name, "pulse")) {
+ 			pulse = ast_true(v->value);
 		} else if (!strcasecmp(v->name, "callreturn")) {
 			callreturn = ast_true(v->value);
 		} else if (!strcasecmp(v->name, "callwaiting")) {
@@ -9456,3 +9465,4 @@
 {
 	return ASTERISK_GPL_KEY;
 }
+