diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 23f936efbf..96793258d6 100755
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -3500,6 +3500,7 @@ static int socket_read(int *id, int fd, short events, void *cbdata)
 	int dcallno = 0;
 	struct ast_iax2_full_hdr *fh = (struct ast_iax2_full_hdr *)buf;
 	struct ast_iax2_mini_hdr *mh = (struct ast_iax2_mini_hdr *)buf;
+	struct ast_iax2_meta_hdr *meta = (struct ast_iax2_meta_hdr *)buf;
 	struct ast_iax2_frame fr, *cur;
 	struct ast_frame f;
 	struct ast_channel *c;
@@ -3522,6 +3523,11 @@ static int socket_read(int *id, int fd, short events, void *cbdata)
 		ast_log(LOG_WARNING, "midget packet received (%d of %d min)\n", res, sizeof(struct ast_iax2_mini_hdr));
 		return 1;
 	}
+	if (meta->zeros == 0) {
+		/* This is a a meta header */
+		ast_log(LOG_DEBUG, "Meta header  Command = %d!\n", meta->metacmd);
+		return 1;
+	}
 #ifdef DEBUG_SUPPORT
 	if (iaxdebug)
 		showframe(NULL, fh, 1, &sin);
diff --git a/channels/chan_mgcp.c b/channels/chan_mgcp.c
index 0b7627d901..49d823b00c 100755
--- a/channels/chan_mgcp.c
+++ b/channels/chan_mgcp.c
@@ -1345,6 +1345,7 @@ static int handle_request(struct mgcp_endpoint *p, struct mgcp_request *req, str
 				p->alreadygone = 1;
 				ast_queue_hangup(p->owner, 1);
 			}
+			transmit_notify_request(p, "", 0);
 		} else if ((strlen(ev) == 1) && 
 					(((ev[0] >= '0') && (ev[0] <= '9')) ||
 					 ((ev[0] >= 'A') && (ev[0] <= 'D')) ||
diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 729bb816ee..385c483892 100755
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -2249,6 +2249,7 @@ static int parse_contact(struct sip_pvt *pvt, struct sip_peer *p, struct sip_req
 		port = atoi(pt);
 	} else
 		port = DEFAULT_SIP_PORT;
+	memcpy(&oldsin, &p->addr, sizeof(oldsin));
 	if (!p->nat) {
 		/* XXX This could block for a long time XXX */
 		hp = gethostbyname(n);
@@ -2256,7 +2257,6 @@ static int parse_contact(struct sip_pvt *pvt, struct sip_peer *p, struct sip_req
 			ast_log(LOG_WARNING, "Invalid host '%s'\n", n);
 			return -1;
 		}
-		memcpy(&oldsin, &p->addr, sizeof(oldsin));
 		p->addr.sin_family = AF_INET;
 		memcpy(&p->addr.sin_addr, hp->h_addr, sizeof(p->addr.sin_addr));
 		p->addr.sin_port = htons(port);
@@ -2273,7 +2273,7 @@ static int parse_contact(struct sip_pvt *pvt, struct sip_peer *p, struct sip_req
 		ast_sched_del(sched, p->expire);
 	if ((expirey < 1) || (expirey > max_expirey))
 		expirey = max_expirey;
-	p->expire = ast_sched_add(sched, expirey * 1000, expire_register, p);
+	p->expire = ast_sched_add(sched, (expirey + 10) * 1000, expire_register, p);
 	pvt->expirey = expirey;
 	if (memcmp(&p->addr, &oldsin, sizeof(oldsin))) {
 		sip_poke_peer(p);
@@ -3629,7 +3629,7 @@ static int handle_request(struct sip_pvt *p, struct sip_request *req, struct soc
 static int sipsock_read(int *id, int fd, short events, void *ignore)
 {
 	struct sip_request req;
-	struct sockaddr_in sin;
+	struct sockaddr_in sin = { 0, };
 	struct sip_pvt *p;
 	int res;
 	int len;
diff --git a/channels/iax2.h b/channels/iax2.h
index da8acadff8..b38609c413 100755
--- a/channels/iax2.h
+++ b/channels/iax2.h
@@ -96,6 +96,9 @@
 #define IAX_AUTH_MD5				(1 << 1)
 #define IAX_AUTH_RSA				(1 << 2)
 
+#define IAX_META_TRUNK				1		/* Trunk meta-message */
+#define IAX_META_VIDEO				2		/* Video frame */
+
 #define IAX_DPSTATUS_EXISTS			(1 << 0)
 #define IAX_DPSTATUS_CANEXIST		(1 << 1)
 #define IAX_DPSTATUS_NONEXISTANT	(1 << 2)
@@ -116,11 +119,28 @@ struct ast_iax2_full_hdr {
 
 /* Mini header is used only for voice frames -- delivered unreliably */
 struct ast_iax2_mini_hdr {
-	short callno;			/* Source call number -- high bit must be 0 */
+	unsigned short callno;	/* Source call number -- high bit must be 0, rest must be non-zero */
 	unsigned short ts;		/* 16-bit Timestamp (high 16 bits from last ast_iax2_full_hdr) */
 							/* Frametype implicitly VOICE_FRAME */
 							/* subclass implicit from last ast_iax2_full_hdr */
 	unsigned char iedata[0];
 } __attribute__ ((__packed__));
 
+struct ast_iax2_meta_hdr {
+	unsigned short zeros;			/* Zeros field -- must be zero */
+	unsigned char metacmd;			/* Meta command */
+	unsigned char cmddata;			/* Command Data */
+	unsigned char data[0];
+} __attribute__ ((__packed__));
+
+struct ast_iax2_meta_trunk_hdr {
+	unsigned int ts;				/* 32-bit timestamp for all messages */
+	unsigned char data[0];
+};
+
+struct ast_iax2_meta_trunk_entry {
+	unsigned short callno;			/* Call number */
+	unsigned short len;				/* Length of data for this callno */
+};
+
 #endif