On Fri, Jan 11, 2013 at 7:09 PM, Jay Ashworth <jra@baylink.com> wrote:
The issue wasn't diversity, it was "is my POTS on Central Battery"; sorry for the comparative red herring.
The issue was: is my POTS going to survive an extended regional power outage that my cellular/DSL/cable modem doesn't, making it a superior OOB channel to something purely IP based during difficult conditions. A central office line will be backed by the CO's generator. An RSU line won't be, so it may give out during the outage. Could be a couple hours later but it'll still run out of power. And you don't have a whole lot of choice about which one you get. That's one reliability measure. Another reliability measure is testability: can you easily monitor whether your POTS-based OOB is operational or do you discover that Bob in accounting failed to pay the bill only when you actually need it? What about your IP-based OOB? Same? Different? Regards, Bill Herrin -- William D. Herrin ................ herrin@dirtside.com bill@herrin.us 3005 Crane Dr. ...................... Web: <http://bill.herrin.us/> Falls Church, VA 22042-3004