diff -Nru a/channels/chan_sip.c b/channels/chan_sip.c
--- a/channels/chan_sip.c	2005-03-22 13:39:59 -07:00
+++ b/channels/chan_sip.c	2005-03-22 13:39:59 -07:00
@@ -8436,22 +8436,15 @@
 			ast_log(LOG_WARNING, "Don't know how to handle INVITE in state %d\n", c->_state);
 			transmit_response(p, "100 Trying", req);
 		}
-	} else {
+	} else if (!ignore) {
 		if (p && !ast_test_flag(p, SIP_NEEDDESTROY)) {
-			if (!p->jointcapability) {
-				if (ignore)
-					transmit_response(p, "488 Not Acceptable Here (codec error)", req);
-				else
-					transmit_response_reliable(p, "488 Not Acceptable Here (codec error)", req, 1);
-				ast_set_flag(p, SIP_NEEDDESTROY);	
-			} else {
+			if (!p->jointcapability)
+				transmit_response_reliable(p, "488 Not Acceptable Here (codec error)", req, 1);
+			else {
 				ast_log(LOG_NOTICE, "Unable to create/find channel\n");
-				if (ignore)
-					transmit_response(p, "503 Unavailable", req);
-				else
-					transmit_response_reliable(p, "503 Unavailable", req, 1);
-				ast_set_flag(p, SIP_NEEDDESTROY);	
+				transmit_response_reliable(p, "503 Unavailable", req, 1);
 			}
+			ast_set_flag(p, SIP_NEEDDESTROY);	
 		}
 	}
 	return res;