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peterwn wrote:
> On Dec 10, 6:36 am, Jonathan Walker <nos...@nospam.invalid> wrote:
>> On Mon, 10 Dec 2007 01:08:31 +1300, no one wrote:
>>> In Kapiti the phones go down when their is a power outage..
>> Then there is something wrong in the exchange.
>> Exchanges are *supposed* to have extremely large batteries that run the
>> *entire* telephone system.
>> The telephone system is supposed to stay usable in the event of a power
>> outage.
>
> That applied in the days of exchanges with copper pairs to each
> customer. If there is any intervening equipment which requires power
> that cannot be dragged out of the pairs, there would seem to be little
> tolerance to power failures. Cellular sites would not have too much
> in the way of backup power either.

Meanwhile the FCC has mandated that most if not all of the US telecom
infrastructure be provided with backup power systems:
> http://www.datacenterknowledge.com/a...or_demand.html
<http://www.datacenterknowledge.com/archives/2007/Dec/10/fcc_ruling_may_spur_generator_demand.html>

And evidence, at least in the states, that remote DSLAMs are at least sometimes
fitted with battery backup:
> http://www.lightreading.com/document.asp?doc_id=131211
> http://www.lightreading.com/document...image_number=1
<http://www.lightreading.com/document.asp?doc_id=131210&page_number=1&image_num ber=1>

All the cell sites I've seen inside are fitted with SLA batteries.

(links in formats to suit multifarious news readers)

On Tue, 11 Dec 2007 05:48:42 +0000, Bruce Sinclair wrote:

> ? I can understand them putting fiber into new areas ... with the current
> price of copper it's probably cheaper anyway.

What is the life expectancy for a fibre-optic connection from a domestic
telephone to an exchange?

How would that compare with the proven minimum life of a copper link?


--
Jonathan Walker

"The IT industry landscape is littered with the dead
dreams of people who once trusted Microsoft."

In article <475decda$>, Richard <> wrote:
>Bruce Sinclair wrote:
>
>>> No, they will have the phone delivered to you via a non copper medium
>>> by then,
>>
>> <snort> ... yeah, right. I am betting they'll still have copper to us.
>
>Oh yeah, like that new subdivision in orewa thats getting the WxC voip
>product on telecom wholesaled fiber... yeah lots of copper there.

? I can understand them putting fiber into new areas ... with the current
price of copper it's probably cheaper anyway.
I can't see them doing anything about existing ones. At least not quickly
... unless they want to harvest the copper for sale of course. Particularly
anywhere that isn't a 'population center'.

>>> so the customer will have to power their equipment. What
>>> provisions are made for the fiber gear between the house and the
>>> existing exchange, I dont know, but I know that with fios in the the
>>> states you have a limited runtime battery in the telco's gear in your
>>> house, any longer and you need to power it yourself.
>>
>> I'm sure they know what they expect 'customers' to do. I'll also bet that
>> many/most won't be bothered to upgrade something that telecom broke. I
>> suspect that telecom satisfaction levels will plummet to new lows ...
>> assuming that is possible of course.
>
>Most people are very satisfied with the reliability of their landline.

Agreed.

>Infact I think you would be hard pressed to find people which have had
>outages on it which were beyond telecoms control (well, if their copper
>wasnt so decrepid the flooding wouldnt have gotten into it) - whereas
>with internet everyone has loads of outages, so I think you are right
>that unless the internet industry learns from the telco industry about
>uptime that there will be a lot more outages, but if that affects
>customers satisfation, I dont know since most people dont use their
>phone 24/7 to notice any small outages.

Broken phones tend to go on being broken until noticed and reported IME.
YMMV