diff --git a/src/mod/endpoints/mod_sofia/mod_sofia.h b/src/mod/endpoints/mod_sofia/mod_sofia.h
index b0d21eee65..06d9a2e2bb 100644
--- a/src/mod/endpoints/mod_sofia/mod_sofia.h
+++ b/src/mod/endpoints/mod_sofia/mod_sofia.h
@@ -41,6 +41,7 @@
 
 #define HAVE_APR
 #include <switch.h>
+#include <switch_version.h>
 #ifdef SWITCH_HAVE_ODBC
 #include <switch_odbc.h>
 #endif
@@ -64,7 +65,7 @@ typedef struct private_object private_object_t;
 #define MY_EVENT_EXPIRE "sofia::expire"
 #define MULTICAST_EVENT "multicast::event"
 #define SOFIA_REPLACES_HEADER "_sofia_replaces_"
-#define SOFIA_USER_AGENT "FreeSWITCH(mod_sofia)"
+#define SOFIA_USER_AGENT "FreeSWITCH-" SWITCH_VERSION_FULL "-mod_sofia"
 #define SOFIA_CHAT_PROTO "sip"
 #define SOFIA_SIP_HEADER_PREFIX "sip_h_"
 #define SOFIA_SIP_HEADER_PREFIX_T "~sip_h_"
diff --git a/src/mod/endpoints/mod_sofia/sofia.c b/src/mod/endpoints/mod_sofia/sofia.c
index 35d0331f27..e8f0f9bff6 100644
--- a/src/mod/endpoints/mod_sofia/sofia.c
+++ b/src/mod/endpoints/mod_sofia/sofia.c
@@ -1199,10 +1199,9 @@ static void sofia_handle_sip_i_state(switch_core_session_t *session, int status,
 					goto done;
 				} else {
 					switch_channel_set_variable(channel, SWITCH_ENDPOINT_DISPOSITION_VARIABLE, "RECEIVED_NOSDP");
-					switch_set_flag(tech_pvt, TFLAG_LATE_NEGOTIATION);
 					sofia_glue_tech_choose_port(tech_pvt);
 					sofia_glue_set_local_sdp(tech_pvt, NULL, 0, NULL, 0);
-					
+					switch_channel_set_state(channel, CS_HIBERNATE);
 					nua_respond(tech_pvt->nh, SIP_200_OK,
 								SIPTAG_CONTACT_STR(tech_pvt->profile->url),
 								SOATAG_USER_SDP_STR(tech_pvt->local_sdp_str), SOATAG_AUDIO_AUX("cn telephone-event"), NUTAG_INCLUDE_EXTRA_SDP(1), TAG_END());
@@ -1332,6 +1331,10 @@ static void sofia_handle_sip_i_state(switch_core_session_t *session, int status,
 								switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR, "RTP Error!\n");
 								switch_channel_hangup(channel, SWITCH_CAUSE_DESTINATION_OUT_OF_ORDER);
 							}
+							if (switch_channel_get_state(channel) == CS_HIBERNATE) {
+								switch_set_flag_locked(tech_pvt, TFLAG_READY);
+								switch_channel_set_state(channel, CS_INIT);
+							}
 							goto done;
 						}
 					}
diff --git a/src/mod/endpoints/mod_sofia/sofia_glue.c b/src/mod/endpoints/mod_sofia/sofia_glue.c
index 801ab1f6e7..c202a4b44f 100644
--- a/src/mod/endpoints/mod_sofia/sofia_glue.c
+++ b/src/mod/endpoints/mod_sofia/sofia_glue.c
@@ -1016,11 +1016,14 @@ switch_status_t sofia_glue_activate_rtp(private_object_t *tech_pvt)
 
 switch_status_t sofia_glue_tech_media(private_object_t *tech_pvt, char *r_sdp)
 {
-	sdp_parser_t *parser = sdp_parse(NULL, r_sdp, (int) strlen(r_sdp), 0);
+	sdp_parser_t *parser = NULL;
 	sdp_session_t *sdp;
 	uint8_t match = 0;
 
 	assert(tech_pvt != NULL);
+	assert(r_sdp != NULL);
+
+	parser = sdp_parse(NULL, r_sdp, (int) strlen(r_sdp), 0);
 
 	if (switch_strlen_zero(r_sdp)) {
 		return SWITCH_STATUS_FALSE;