FS-2892

src/mod/endpoints/mod_sofia/sofia_glue.c

@@ -3732,6 +3732,14 @@ static switch_t38_options_t *tech_process_udptl(private_object_t *tech_pvt, sdp_
 
 	if (!t38_options) {
 		t38_options = switch_core_session_alloc(tech_pvt->session, sizeof(switch_t38_options_t));
+
+		// set some default value
+		t38_options->T38FaxVersion = 0;
+		t38_options->T38MaxBitRate = 9600;
+		t38_options->T38FaxRateManagement = switch_core_session_strdup(tech_pvt->session, "transferredTCF");
+		t38_options->T38FaxUdpEC = switch_core_session_strdup(tech_pvt->session, "t38UDPRedundancy");
+		t38_options->T38FaxMaxBuffer = 500;
+		t38_options->T38FaxMaxDatagram = 500;
 	}
 
 	t38_options->remote_port = (switch_port_t)m->m_port;