Hey All, Question about t_on_failure in SER. How does t_on_failure route? Is the failure based on the TCP connection, or is it based on the response from the end client. IE. If I relay an INVITE through SER from my IAD to a PSTN and I get a "400 Bad Request" response back from the PSTN gateway in response to that INVITE will SER then route the call based on the t_on_failure flag to the failure route? Thanks for your help! Darren Nay VOIP Network Development Ionosphere, Inc. Email: dnay(a)ionosphere.net <mailto:dnay@ionosphere.net> Office: (864) 678-3158 Cell: (864) 918-8353