diff -ru asterisk-0.7.2/channels/chan_h323.c asterisk-0.7.2-bindip/channels/chan_h323.c
--- asterisk-0.7.2/channels/chan_h323.c	Tue Jan 13 09:24:26 2004
+++ asterisk-0.7.2-bindip/channels/chan_h323.c	Fri Feb 20 15:24:14 2004
@@ -720,7 +720,7 @@
 
 	/* Keep track of stuff */
 	memset(p, 0, sizeof(struct oh323_pvt));
-	p->rtp = ast_rtp_new(sched, io, 1, 0);
+	p->rtp = ast_rtp_new(sched, io, 1, 0, &bindaddr->sin_addr);
 
 	if (!p->rtp) {
 		ast_log(LOG_WARNING, "Unable to create RTP session: %s\n", strerror(errno));

diff -ru asterisk-0.7.2/channels/chan_mgcp.c asterisk-0.7.2-bindip/channels/chan_mgcp.c
--- asterisk-0.7.2/channels/chan_mgcp.c	Mon Feb  2 06:38:08 2004
+++ asterisk-0.7.2-bindip/channels/chan_mgcp.c	Fri Feb 20 15:29:28 2004
@@ -1735,7 +1735,7 @@
 {
 		ast_mutex_lock(&sub->lock);
 		/* Allocate the RTP now */
-		sub->rtp = ast_rtp_new(sched, io, 1, 0);
+		sub->rtp = ast_rtp_new(sched, io, 1, 0, &bindaddr.sin_addr);
 		if (sub->rtp && sub->owner)
 			sub->owner->fds[0] = ast_rtp_fd(sub->rtp);
 		if (sub->rtp)

diff -ru asterisk-0.7.2/channels/chan_sip.c asterisk-0.7.2-bindip/channels/chan_sip.c
--- asterisk-0.7.2/channels/chan_sip.c	Mon Feb  2 23:51:25 2004
+++ asterisk-0.7.2-bindip/channels/chan_sip.c	Fri Feb 20 15:28:40 2004
@@ -1696,9 +1696,9 @@
 	p->initid = -1;
 	p->autokillid = -1;
 	p->stateid = -1;
-	p->rtp = ast_rtp_new(sched, io, 1, 0);
+	p->rtp = ast_rtp_new(sched, io, 1, 0, &bindaddr.sin_addr);
 	if (videosupport)
-		p->vrtp = ast_rtp_new(sched, io, 1, 0);
+		p->vrtp = ast_rtp_new(sched, io, 1, 0, &bindaddr.sin_addr);
 	p->branch = rand();	
 	p->tag = rand();
 	

diff -ru asterisk-0.7.2/channels/chan_skinny.c asterisk-0.7.2-bindip/channels/chan_skinny.c
--- asterisk-0.7.2/channels/chan_skinny.c	Mon Feb  2 06:38:08 2004
+++ asterisk-0.7.2-bindip/channels/chan_skinny.c	Fri Feb 20 15:29:46 2004
@@ -1225,7 +1225,7 @@
 {
 		ast_mutex_lock(&sub->lock);
 		/* Allocate the RTP */
-		sub->rtp = ast_rtp_new(sched, io, 1, 0);
+		sub->rtp = ast_rtp_new(sched, io, 1, 0, &bindaddr.sin_addr);
 		if (sub->rtp && sub->owner)
 			sub->owner->fds[0] = ast_rtp_fd(sub->rtp);
 		if (sub->rtp)

diff -ru asterisk-0.7.2/include/asterisk/rtp.h asterisk-0.7.2-bindip/include/asterisk/rtp.h
--- asterisk-0.7.2/include/asterisk/rtp.h	Sat Nov 15 00:52:49 2003
+++ asterisk-0.7.2-bindip/include/asterisk/rtp.h	Fri Feb 20 15:20:53 2004
@@ -48,7 +48,7 @@
 
 typedef int (*ast_rtp_callback)(struct ast_rtp *rtp, struct ast_frame *f, void *data);
 
-struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode);
+struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode, struct in_addr *local_addr);
 
 void ast_rtp_set_peer(struct ast_rtp *rtp, struct sockaddr_in *them);
 

diff -ru asterisk-0.7.2/rtp.c asterisk-0.7.2-bindip/rtp.c
--- asterisk-0.7.2/rtp.c	Tue Nov 25 21:15:28 2003
+++ asterisk-0.7.2-bindip/rtp.c	Fri Feb 20 15:24:51 2004
@@ -689,7 +689,8 @@
 	return rtcp;
 }
 
-struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io, int rtcpenable, int callbackmode)
+struct ast_rtp *ast_rtp_new(struct sched_context *sched, struct io_context *io,
+	int rtcpenable, int callbackmode, struct in_addr *local_addr)
 {
 	struct ast_rtp *rtp;
 	int x;
@@ -715,6 +716,11 @@
 	}
 	flags = fcntl(rtp->s, F_GETFL);
 	fcntl(rtp->s, F_SETFL, flags | O_NONBLOCK);
+
+	/* use the requested local IP address, if any */
+	if (local_addr)
+		memcpy(&rtp->us.sin_addr, local_addr, sizeof(rtp->us.sin_addr));
+
 	/* Find us a place */
 	x = (rand() % (rtpend-rtpstart)) + rtpstart;
 	x = x & ~1;