I bought a Grandstream HT701 ATA and it has a feature where a re-boot isn't required for certain configuration changes. After clicking APPLY a new screen is display informing you the changes have been made. A Re-boot Button is only included if a re-boot is required. I was able to change the Proxy, UserID and un-register the account without a re-boot.
This would be a great feature for the OBi products.