Hi Daniel! yep, event_route[tm:local-request] did the trick this is working config: event_route[tm:local-request] { if (is_method("NOTIFY") && ($hdr(event) == "dialog") ) { t_set_retr(4000, 4000); } } immense thank you for the hint! cheers -- Sent from: http://sip-router.1086192.n5.nabble.com/Users-f3.html