[Serusers] problem with LCR and CANCEL

hello, apologies if this is a silly question... Basically when using the LCR module, if I CANCEL the call before the remote party picks up, the LCR system will place the call again through the next gateway. I have found quite a few references to this in this list archives etc, so it is probably something fairly simple I have setup wrong, but none of the messages I found seemed to solve the problem for me. :-( After some googling I have read that this is because the first gateway is not responding with a 487 (which it is in my case). My config has, among other bits, route { ...... t_on_failure("1"); if (!next_gw()) { sl_send_reply("500", "cannot use next gateway"); break; }; ..... } failure_route[1] { t_on_failure("1"); if (!next_gw()) { t_reply("503", "No more gateways"); break; }; t_relay(); } If required I can provide more details but is there anything obviously missing from the config above which I should be using? thanks -ben -- Ben Smithurst ben(a)gradwell.net gradwell dot com Ltd Systems Developer http://bensmithurst.com/ http://www.gradwell.com/