[LINK] Battery back-up mandatory for NBN?

[Michael Skeggs mike@bystander.net]

The battery backup device Tom linked has a 7Ah battery, so it would be
reasonable to expect 6+ hours operation when the battery is new.
Figure an operational life of 5-10years before the battery no longer
makes it to 4 hours.
This is assuming the NBN equipment draws full charge all the time (I
am guessing the NBN box will draw about an amp, similar to my
ADSL/wifi device. Some goggling showed no definite figures, but
guesses on Whirlpool ranged from 6w to 15w).
My guess (and it is just a guess) is that it would draw more power
when in use as opposed to sitting idle, so the battery might keep a
phone only service on standby for several days/weeks. After all, the
little battery in a Nokia mobile can keep that device on standby for a
week.
I suspect the NBN Co wouldn't mind installing the back-up, but don't
want the on-going maintenance headache with batteries that have a
limited life, so are making it an option. Reading the document Tom
linked, and some stuff on Internode's website indicates managing the
battery is the end user's job, at least in the pilot stage.
I also hadn't realised the pilot does not offer POTS voice, only IP
and VoIP, so the POTS port on the NTU is not being used in the pilot.

Regards,
Michael Skeggs

On 25 October 2010 11:27, Kim Holburn <kim at holburn.net> wrote:
>
> On 2010/Oct/25, at 11:02 AM, Tom Worthington wrote:
>
>> Are backup batteries being provided to all NBN customers as the Minister
>> for Communication claims, or are these a customer installed option, as
>> the NBN documentation states?
>>
>> On ABC Radio in 2009 I stated that:
>>
>> "One thing the NBN needs is a battery backup lasting at least 4 hours,
>
> At least 4 hours?
>
>> so the system keeps running in an emergency.
>
> Or at least in a 4 hour emergency.
>
> Anyone have any idea how long the Telstra exchanges would hold up in the event of a prolonged blackout?  I assume they have a maintenance plan and testing as well.  Is that likely to happen in private homes?  I don't think so.
>
> Of course if the NBN was able to monitor people's UPS's and instigate replacements - but then there are privacy issues!
>
>
> --
> Kim Holburn
> IT Network & Security Consultant
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