OBi renews register about half-way before last registration expires. Default register expires is 60s, so every 30s the OBi sends a new REGISTER. What you are observing is that the first REGISTER is successful, but the subsequent ones failed to receive a response from the server.
----
Check if your router has a SIP ALG function. If yes, please disable that function on your router.
See if that can resolve the problem.
Otherwise, see if you can capture a debug log from the OBI for a few minutes after a reboot,
and email to
support@obihai.com. Make sure to enable all the SIP messages when doing the capture.
Here are some information on how to get a debug log from the OBi.
http://www.obitalk.com/forum/index.php?topic=707.0If you have trouble doing this, just email
support@obihai.com and we can do that for you remotely.
Thank you.