diff --git a/conf/autoload_configs/switch.conf.xml b/conf/autoload_configs/switch.conf.xml
index 7a68a7f2bd..e861b1b61a 100644
--- a/conf/autoload_configs/switch.conf.xml
+++ b/conf/autoload_configs/switch.conf.xml
@@ -15,6 +15,11 @@
     <key name="12" value="version"/>
   </cli-keybindings> 
   
+  <default-ptimes>
+    <!-- set this to overide the 20ms assumption of various codecs in the sdp with no ptime defined -->
+    <!--<codec name="G729" ptime="40"/>-->
+  </default-ptimes>
+  
   <settings>
     <!--Colorize the Console -->
     <param name="colorize-console" value="true"/>
diff --git a/src/include/private/switch_core_pvt.h b/src/include/private/switch_core_pvt.h
index 6a9bdc35a0..ea02f22fa0 100644
--- a/src/include/private/switch_core_pvt.h
+++ b/src/include/private/switch_core_pvt.h
@@ -199,6 +199,7 @@ struct switch_runtime {
 	int64_t offset;
 	switch_event_t *global_vars;
 	switch_hash_t *mime_types;
+	switch_hash_t *ptimes;
 	switch_memory_pool_t *memory_pool;
 	const switch_state_handler_table_t *state_handlers[SWITCH_MAX_STATE_HANDLERS];
 	int state_handler_index;
diff --git a/src/include/switch_core.h b/src/include/switch_core.h
index 04991ed186..3f636d00c4 100644
--- a/src/include/switch_core.h
+++ b/src/include/switch_core.h
@@ -2168,6 +2168,7 @@ SWITCH_DECLARE(uint32_t) switch_core_debug_level(void);
 SWITCH_DECLARE(void) switch_cache_db_flush_handles(void);
 SWITCH_DECLARE(const char *) switch_core_banner(void);
 SWITCH_DECLARE(switch_bool_t) switch_core_session_in_thread(switch_core_session_t *session);
+SWITCH_DECLARE(uint32_t) switch_default_ptime(const char *name, uint32_t number);
 
 SWITCH_END_EXTERN_C
 #endif
diff --git a/src/include/switch_utils.h b/src/include/switch_utils.h
index e5d70c43cc..945583ee07 100644
--- a/src/include/switch_utils.h
+++ b/src/include/switch_utils.h
@@ -376,15 +376,6 @@ switch_mutex_unlock(obj->flag_mutex);
 #define switch_set_string(_dst, _src) switch_copy_string(_dst, _src, sizeof(_dst))
 
 
-static inline uint32_t switch_default_ptime(const char *name, uint32_t number)
-{
-	if (!strcasecmp(name, "G723")) {
-		return 30;
-	}
-
-	return 20;
-}
-
 static inline char *switch_sanitize_number(char *number)
 {
 	char *p = number, *q;
diff --git a/src/switch_core.c b/src/switch_core.c
index 2c33b341de..567fcfd14a 100644
--- a/src/switch_core.c
+++ b/src/switch_core.c
@@ -1275,6 +1275,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_init(switch_core_flag_t flags, switc
 	switch_core_session_init(runtime.memory_pool);
 	switch_event_create_plain(&runtime.global_vars, SWITCH_EVENT_CHANNEL_DATA);
 	switch_core_hash_init(&runtime.mime_types, runtime.memory_pool);
+	switch_core_hash_init_case(&runtime.ptimes, runtime.memory_pool, SWITCH_FALSE);
 	load_mime_types();
 	runtime.flags |= flags;
 	runtime.sps_total = 30;
@@ -1405,13 +1406,58 @@ static void handle_SIGHUP(int sig)
 }
 
 
+SWITCH_DECLARE(uint32_t) switch_default_ptime(const char *name, uint32_t number)
+{
+	uint32_t *p;
+
+	if ((p = switch_core_hash_find(runtime.ptimes, name))) {
+		return *p;
+	}
+
+	return 20;
+}
+
+static uint32_t d_30 = 30;
+
 static void switch_load_core_config(const char *file)
 {
 	switch_xml_t xml = NULL, cfg = NULL;
 
+	switch_core_hash_insert(runtime.ptimes, "ilbc", &d_30);
+	switch_core_hash_insert(runtime.ptimes, "G723", &d_30);
+	
+
+
 	if ((xml = switch_xml_open_cfg(file, &cfg, NULL))) {
 		switch_xml_t settings, param;
 
+		if ((settings = switch_xml_child(cfg, "default-ptimes"))) {
+			for (param = switch_xml_child(settings, "codec"); param; param = param->next) {
+				const char *var = switch_xml_attr_soft(param, "name");
+				const char *val = switch_xml_attr_soft(param, "ptime");
+				
+				if (!zstr(var) && !zstr(val)) {
+					uint32_t *p;
+					uint32_t v = (unsigned long) atol(val);
+
+					if (!strcasecmp(var, "G723") || !strcasecmp(var, "iLBC")) {
+						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Error adding %s, defaults cannot be changed\n", var);
+						continue;
+					}
+					
+					if (v < 0) {
+						switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Error adding %s, invalid ptime\n", var);
+						continue;
+					}
+
+					p = switch_core_alloc(runtime.memory_pool, sizeof(*p));
+					*p = v;
+					switch_core_hash_insert(runtime.ptimes, var, p);
+				}
+
+			}
+		}
+
 		if ((settings = switch_xml_child(cfg, "settings"))) {
 			for (param = switch_xml_child(settings, "param"); param; param = param->next) {
 				const char *var = switch_xml_attr_soft(param, "name");
@@ -1973,6 +2019,7 @@ SWITCH_DECLARE(switch_status_t) switch_core_destroy(void)
 	switch_safe_free(SWITCH_GLOBAL_dirs.temp_dir);
 
 	switch_event_destroy(&runtime.global_vars);
+	switch_core_hash_destroy(&runtime.ptimes);
 	switch_core_hash_destroy(&runtime.mime_types);
 
 	if (IP_LIST.hash) {