diff --git a/src/mod/endpoints/mod_dingaling/mod_dingaling.c b/src/mod/endpoints/mod_dingaling/mod_dingaling.c
index ebf3deafc2..367d97b3bc 100644
--- a/src/mod/endpoints/mod_dingaling/mod_dingaling.c
+++ b/src/mod/endpoints/mod_dingaling/mod_dingaling.c
@@ -1682,7 +1682,7 @@ static void setup_codecs(struct private_object *tech_pvt)
 	}
 
 
-	if (!payloads[1].id) {
+	if (!payloads[1].id && tech_pvt->transports[LDL_TPORT_VIDEO_RTP].local_port) {
 		switch_rtp_release_port(tech_pvt->profile->ip, tech_pvt->transports[LDL_TPORT_VIDEO_RTP].local_port);
 		tech_pvt->transports[LDL_TPORT_VIDEO_RTP].local_port = 0;
 	}
@@ -2846,7 +2846,7 @@ static void set_profile_val(mdl_profile_t *profile, char *var, char *val)
 		} else if (val && !strcasecmp(val, "md5")) {
 			profile->user_flags |= LDL_FLAG_SASL_MD5;
 		}
-	} else if (!strcasecmp(var, "use-jingle") && !zstr(val)) {
+	} else if (!strcasecmp(var, "use-jingle") && switch_true(val)) {
 		profile->user_flags |= LDL_FLAG_JINGLE;
 	} else if (!strcasecmp(var, "exten") && !zstr(val)) {
 		profile->exten = switch_core_strdup(module_pool, val);
diff --git a/src/switch_core_port_allocator.c b/src/switch_core_port_allocator.c
index 4b15318274..5863fddafe 100644
--- a/src/switch_core_port_allocator.c
+++ b/src/switch_core_port_allocator.c
@@ -174,7 +174,13 @@ SWITCH_DECLARE(switch_status_t) switch_core_port_allocator_free_port(switch_core
 	switch_status_t status = SWITCH_STATUS_FALSE;
 	int even = switch_test_flag(alloc, SPF_EVEN);
 	int odd = switch_test_flag(alloc, SPF_ODD);
-	int index = port - alloc->start;
+	int index;
+
+	if (port < alloc->start) {
+		return SWITCH_STATUS_GENERR;
+	}
+
+	index = port - alloc->start;
 
 	if (!(even && odd)) {
 		index /= 2;
diff --git a/src/switch_rtp.c b/src/switch_rtp.c
index 538a44fe16..f0749d8087 100644
--- a/src/switch_rtp.c
+++ b/src/switch_rtp.c
@@ -1229,7 +1229,7 @@ SWITCH_DECLARE(void) switch_rtp_release_port(const char *ip, switch_port_t port)
 {
 	switch_core_port_allocator_t *alloc = NULL;
 
-	if (!ip) {
+	if (!ip || !port) {
 		return;
 	}