(closes issue #13337)

Reported by: pj
Tested by: pj

Set transport to SIP_TRANSPORT_UDP mode if not specified which fixes calls to get_transport returning UNKNOWN.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@145249 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -20354,6 +20354,8 @@ static struct ast_channel *sip_request_call(const char *type, int format, void *
 				ast_log(LOG_WARNING, "'%s' is not a valid transport option to Dial() for SIP calls, using udp by default.\n", trans);
 			transport = SIP_TRANSPORT_UDP;
 		}
+	} else { /* use default */
+		transport = SIP_TRANSPORT_UDP;
 	}
 
 	if (!host) {