--- asterisk/channels/chan_sip.c.orig	2006-11-01 22:11:03.000000000 -0300
+++ asterisk/channels/chan_sip.c	2006-11-01 22:21:13.000000000 -0300
@@ -4387,7 +4387,7 @@
 			ast_log(LOG_DEBUG, "Got a request with unsupported SIP method.\n");
 	} else if (intended_method != SIP_RESPONSE) {
 		/* This is a request outside of a dialog that we don't know about */
-		transmit_response_using_temp(callid, sin, 1, intended_method, req, "481 Call leg/transaction does not exist");
+		// transmit_response_using_temp(callid, sin, 1, intended_method, req, "481 Call leg/transaction does not exist");
 		if (option_debug > 1 && intended_method == SIP_RESPONSE)
 			ast_log(LOG_DEBUG, "That's odd...  Got a request in unknown dialog. Callid %s\n", callid ? callid : "<unknown>");
 	}