Default to no udptl error correction so that error correction will be disabled in the event that the remote end indicates that they do not support the error correction mode we requested.

FAX-128


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@277497 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -5515,6 +5515,11 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 				if (option_debug > 1)
 					ast_log(LOG_DEBUG, "T38 state changed to %d on channel %s\n", p->t38.state, p->owner ? p->owner->name : "<none>");
 			}
+
+			/* default EC to none, the remote end should respond
+			 * with the EC they want to use */
+			p->t38.peercapability &= ~T38FAX_UDP_EC_NONE;
+			ast_udptl_set_error_correction_scheme(p->udptl, UDPTL_ERROR_CORRECTION_NONE);
 		} else {
 			ast_log(LOG_WARNING, "Unsupported SDP media type in offer: %s\n", m);
 			continue;