[Serusers] t_on_failure also when CANCEL?

I have a problem CANCELING requests when using t_on_failure. Example: I forward the call to the PSTN gateway. Then I CANCEL the request. I am using a second PSTN gateway for backup and I call the function t_on_failure before t_relay: t_on_failure("2"); if (!t_relay()) { sl_reply_error(); }; As a result of the CANCEL request, a 487 code is received and t_on_failure redirects the requests to the second PSTN gateway. This is not what I expect after sending a CANCEL. The manual says all responses is it? Do I miss something in the configuration to stop this from happening? Regards, Adrian Georgescu ag(a)ag-projects.com http://ag-projects.com Tel: +31-23-5458104 IP phone: sip:ag@ag-projects.com ------------------------------------------------ DNS, ENUM & IP telephony http://managed-dns.org/