diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.c b/src/mod/endpoints/mod_sofia/mod_sofia.c
index 349e142895..0b71e3241e 100644
--- a/src/mod/endpoints/mod_sofia/mod_sofia.c
+++ b/src/mod/endpoints/mod_sofia/mod_sofia.c
@@ -762,6 +762,8 @@ static void set_local_sdp(private_object_t *tech_pvt, char *ip, uint32_t port, c
 
 static void tech_set_codecs(private_object_t *tech_pvt)
 {
+    switch_channel_t *channel;
+    char *codec_string = NULL;
 
 	if (switch_test_flag(tech_pvt, TFLAG_NOMEDIA)) {
 		return;
@@ -771,7 +773,16 @@ static void tech_set_codecs(private_object_t *tech_pvt)
 		return;
 	}
 
-	if (tech_pvt->profile->codec_string) {
+    assert(tech_pvt->session != NULL);
+
+    channel = switch_core_session_get_channel(tech_pvt->session);
+    assert (channel != NULL);
+
+    if (!(codec_string = switch_channel_get_variable(channel, "codec_string"))) {
+        codec_string = tech_pvt->profile->codec_string;
+    }
+
+	if (codec_string) {
 		tech_pvt->num_codecs = switch_loadable_module_get_codecs_sorted(tech_pvt->codecs,
 																		SWITCH_MAX_CODECS,
 																		tech_pvt->profile->codec_order,