But what about phones that don't support UA keep-alives? Do you suggest that I put my re register period way down?
I wonder is it possible for ser to query the UA on an existing udp session, something like an options query, that will illicit a response from the UA. It may generate as much traffic as a register, but it would probably be less load on the server, so perhaps the lesser of two evils?
I would like to try and identify a solution based in ser, so I don't have to rely on every phone supporting keep alives or the nth feature.
-Jev
You can try experimenting with the "serctl ping" command. You would have to device some sort of elaborate script to do it automatically every X seconds.