--- asterisk/channels/chan_sip.c_ast_debug5.txt Mon Jan 26 03:41:02 2004
+++ asterisk/channels/chan_sip.c        Mon Jan 26 03:59:36 2004
@@ -5645,7 +5645,10 @@
                else
                        p->needdestroy = 1;
                transmit_response(p, "200 OK", req);
-               transmit_response_reliable(p, "487 Request Terminated", &p->initreq);
+               if (p->initreq.len > 0)
+                       transmit_response_reliable(p, "487 Request Terminated", &p->initreq);
+               else
+                       transmit_response(p, "487 Request Terminated", req);
        } else if (!strcasecmp(cmd, "BYE")) {
                copy_request(&p->initreq, req);
                check_via(p, req);