--- chan_sip.c	2012-12-12 10:28:11.000000000 +0100
+++ chan_sip.c_patch	2012-12-12 10:28:07.000000000 +0100
@@ -4199,6 +4199,13 @@
 			}
 		}
 	}
+        else if(pkt->owner->pendinginvite == pkt->seqno)
+        {
+                       ast_log(LOG_WARNING, "Timeout on %s on non-critical invite transaction.\n", pkt->owner->callid);
+                       pkt->owner->invitestate = INV_TERMINATED;
+                       pkt->owner->pendinginvite = 0;
+		       check_pendings(pkt->owner);
+        }
 
 	if (pkt->method == SIP_BYE) {
 		/* We're not getting answers on SIP BYE's.  Tear down the call anyway. */