FS-3078 This is more like it

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -838,6 +838,7 @@ void sofia_glue_attach_private(switch_core_session_t *session, sofia_profile_t *
 
 	tech_pvt->session = session;
 	tech_pvt->channel = switch_core_session_get_channel(session);
+	sofia_glue_check_dtmf_type(tech_pvt);
 	switch_channel_set_cap(tech_pvt->channel, CC_MEDIA_ACK);
 	switch_channel_set_cap(tech_pvt->channel, CC_BYPASS_MEDIA);
 	switch_channel_set_cap(tech_pvt->channel, CC_PROXY_MEDIA);