Setting t_on_failure("FAILURE_ROUTE") before t_relay(), given a route block failure_route[FAILURE_ROUTE], as you are doing, should work. -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ -- Alex Balashov | Principal | Evariste Systems LLC Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free) Web: http://www.evaristesys.com/, http://www.csrpswitch.com/ On Wed, Jun 15, 2022 at 8:34 AM Antonio Couto <couto.a(a)gmail.com> wrote: > Thanks for your support, I am trying to do this but to be honest I don't > know > how to arm the failure route for this case of "fr_inv_timer". > > When I received reply 183 I use t_set_fr() function to set the new value > for "fr_inv_timer", > do far so good, but I never received failure_route[0] when Kamailio > terminate the call sending 408, > even calling like this: > > t_on_failure("0"); > t_relay(); > > I can't find on documentation how to do this. > Thanks a lot > > > >