FS-3514 --resolve

diff --git a/src/mod/endpoints/mod_sofia/sofia_glue.c b/src/mod/endpoints/mod_sofia/sofia_glue.c
index 8b4c5e2b414920ae9788ae46100033c9dec8469f..5ab6bdcc6684e807f6ff21d8bca1e6f478c8adaa 100644 (file)
--- a/src/mod/endpoints/mod_sofia/sofia_glue.c
+++ b/src/mod/endpoints/mod_sofia/sofia_glue.c
@@ -4823,6 +4823,12 @@ uint8_t sofia_glue_negotiate_sdp(switch_core_session_t *session, const char *r_s
                                }
                        }
 
+                       if (!best_te && (sofia_test_pflag(tech_pvt->profile, PFLAG_LIBERAL_DTMF) || sofia_test_flag(tech_pvt, TFLAG_LIBERAL_DTMF))) {
+                               switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_DEBUG, 
+                                                                 "No 2833 in SDP. Liberal DTMF mode adding %d as telephone-event.", tech_pvt->profile->te);
+                               best_te = tech_pvt->profile->te;
+                       }
+
                        if (best_te) {
                                if (switch_channel_direction(channel) == SWITCH_CALL_DIRECTION_OUTBOUND) {
                                        te = tech_pvt->te = (switch_payload_t) best_te;