Index: channels/chan_sip.c
===================================================================
--- channels/chan_sip.c	(revision 246623)
+++ channels/chan_sip.c	(working copy)
@@ -4921,7 +4921,7 @@
 				if (p->hangupcause && (res = hangup_cause2sip(p->hangupcause)))
 					transmit_response_reliable(p, res, &p->initreq);
 				else
-					transmit_response_reliable(p, "603 Declined", &p->initreq);
+					transmit_response_reliable(p, "487 Request Terminated", &p->initreq);
 				p->invitestate = INV_TERMINATED;
 			}
 		} else {	/* Call is in UP state, send BYE */