[OpenSER-Users] Radius accounting and Dialog

Hello all, Question: I know BYE messages aren't gusranteed to be delivered as far as accounting is concerned. BUT, Could Dialog and TM modules be used in the following way: Setting a timeout on the dialog to receive the first message, i.e. 100 or 180. Instruct the UAC to send a message every 60 senconds to our server, and reseting that timer when we receive it, so that we know that the call hasn't ended. If we don't receive that "keep-alive" message we end the dialog with a BYE (from an outside script) so that, even if the caller or calle dropped out of the internet, we have a START and END for this call, maybe loosing a few senconds. Is this possible at all? Thanks a lot! David