Backup to ADSL?

I need to advise someone on a method of backup for his ADSL as his business
is growing moe dependant on his ADSL connection and it is a single point of
failure.

I feel a second ADSL line will come from the same exchange in Deptford
(London) so is not really a backup route.

Is a leased line a sensible option for backup ??(OTT)??

What else can he do?

Thanks in advance

"Infant Newbie" <(E-Mail Removed)> wrote in message
news:bo1t97$r3q$(E-Mail Removed)...
> I need to advise someone on a method of backup for his ADSL as his
business
> is growing moe dependant on his ADSL connection and it is a single point
of
> failure.
>
> I feel a second ADSL line will come from the same exchange in Deptford
> (London) so is not really a backup route.

It all depends what you mean by "back-up", just how dependent his business
is on the internet and how much they want to spend.

> Is a leased line a sensible option for backup ??(OTT)??

A leased line costs a *lot* more than an ADSL one..

> What else can he do?

Normal 56K dial up
Highway/ISDN
ADSL - but a different "class" of service - for instance if your friend
currently has a 20:1 business connection they can get a 50:1 as backup -
they are attached to different equipment on the exchange (perhaps a
different ISP as well)

You will note all the above would go through the same telephone exchange
though.

Perhaps getting TotalCare from BT for the voice element of the ADSL line and
the equivalent fro your ISP (if they offer it) for the ADSL element. are
worth considering as well

Regards
Sunil

On Sun, 02 Nov 2003 03:45:24 +0000, Sunil Sood wrote:


> "Infant Newbie" <(E-Mail Removed)> wrote in message
> news:bo1t97$r3q$(E-Mail Removed)...
>> I need to advise someone on a method of backup for his ADSL as his
> business
>> is growing moe dependant on his ADSL connection and it is a single
>> point
> of
>> failure.
>>
>> I feel a second ADSL line will come from the same exchange in Deptford
>> (London) so is not really a backup route.
>
> It all depends what you mean by "back-up", just how dependent his
> business is on the internet and how much they want to spend.
>
>> Is a leased line a sensible option for backup ??(OTT)??
>
> A leased line costs a *lot* more than an ADSL one..
>
>> What else can he do?
>
> Normal 56K dial up
> Highway/ISDN
> ADSL - but a different "class" of service - for instance if your friend
> currently has a 20:1 business connection they can get a 50:1 as backup -
> they are attached to different equipment on the exchange (perhaps a
> different ISP as well)
>
> You will note all the above would go through the same telephone exchange
> though.
>
> Perhaps getting TotalCare from BT for the voice element of the ADSL line
> and the equivalent fro your ISP (if they offer it) for the ADSL element.
> are worth considering as well
>
> Regards
> Sunil

I'm afraid a second ADSL from any ISP and any contention rate is no bacup
solution. It will be routed in the same cable back to the exchange with
the main ADSL. It will then be connected to the same DSLAM, no matter
which ISP. It will then be routed out of the local exchange on the same
fiber, etc, etc.

If the exchange has been "unbundled" another ISP that has it's own kit
located at the local exchange will give some degree of seperacy, but still
both systems will be on the same local cable.

The best possibility is service from another cable company, unless you are
prepared to pay for a KiloStream over fiber from BT (or other provider)

graham

"Sunil Sood" <(E-Mail Removed)> writes:

> You will note all the above would go through the same telephone exchange
> though.

Though as he is in London, it might be possible to have a normal
phone line or ISDN/Highway provided from a different exchange. Or is
this only possible closer to the city?

"Graham" <(E-Mail Removed)> wrote in message
news(E-Mail Removed)...
> On Sun, 02 Nov 2003 03:45:24 +0000, Sunil Sood wrote:
>

snip >
> If the exchange has been "unbundled" another ISP that has it's own kit
> located at the local exchange will give some degree of seperacy, but still
> both systems will be on the same local cable.
>
> The best possibility is service from another cable company, unless you are
> prepared to pay for a KiloStream over fiber from BT (or other provider)
>
> graham
>

Cable providers are now charging megabucks to connect new business users

In article <bo1t97$r3q$(E-Mail Removed)>, Infant Newbie
<(E-Mail Removed)> writes

>I need to advise someone on a method of backup for his ADSL as his business
>is growing moe dependant on his ADSL connection and it is a single point of
>failure.
>
>I feel a second ADSL line will come from the same exchange in Deptford
>(London) so is not really a backup route.

A home ADSL product (50:1 contention rather than the 20:1 business
contention) is terminated on different equipment in the exchange. This
is fairly cheap.

>Is a leased line a sensible option for backup ??(OTT)??

It's very expensive, but the only truly resilient option - if the line
leaves the premises by a different route to ensure that JCBs don't
bugger up both at the same time. Laying the cable will be very, very
expensive.

>What else can he do?

ISDN or dial-up - but still likely to use the same exchange and route.

My provider (AAISP) offers some (all) of the alternatives mentioned
above, though I don't use any.

You'll also need a router or a firewall product that can deal with the
failure and alter the routing. Some can make use of the backup line to
increase bandwidth - so it's not only used for backup.

What kind of budget are you thinking about?

--
David Mahon
Due to the recent virus attacks, please email any
replies to newsreply_01 AT amigo.co.uk

Looks like ISDN is the way to go as he already has isdn for voice. I will
have to look into that. Which Service provider is best? As it will only be
for occasional use.

Thanks for replies above


"Infant Newbie" <(E-Mail Removed)> wrote in message
news:bo1t97$r3q$(E-Mail Removed)...
> I need to advise someone on a method of backup for his ADSL as his
business
> is growing moe dependant on his ADSL connection and it is a single point
of
> failure.
>
> I feel a second ADSL line will come from the same exchange in Deptford
> (London) so is not really a backup route.
>
> Is a leased line a sensible option for backup ??(OTT)??
>
> What else can he do?
>
> Thanks in advance
>
>

In article <(E-Mail Removed)>, Graham
<(E-Mail Removed)> writes

>I'm afraid a second ADSL from any ISP and any contention rate is no bacup
>solution. It will be routed in the same cable back to the exchange with
>the main ADSL. It will then be connected to the same DSLAM, no matter
>which ISP. It will then be routed out of the local exchange on the same
>fiber, etc, etc.

As I understand it, 50:1 and 20:1 products are connected on separate
DSLAMs. You can even then fallback to ISDN if both ADSL lines were to go
down.

Here is such a product. Cost - £20 per month.

http://www.aaisp.net/home500backup.html

The Package
The Backup 500 service is a Home 500 line available to customers with
one of our Office broadband services and an extra phone line at the same
address. To maximise resillience the backup circuit is connected via a
different BT Central via different fibre. Normally a backup line will
have a router connected all of the time and routing for your blocks of
IP addresses can be switched automatically to the backup line once the
main line fails (although this can take 20 minutes). The backup line is
intended for backup use, using the Office line when it is working
correctly. However the Backup 500 can also be used to provide additional
uplink capacity using the bonded uplink feature of the FireBrick. The
service is £20.00 per month.






--
David Mahon
Due to the recent virus attacks, please email any
replies to newsreply_01 AT amigo.co.uk

Infant Newbie <(E-Mail Removed)> wrote:
> I need to advise someone on a method of backup for his ADSL as his business
> is growing moe dependant on his ADSL connection and it is a single point of
> failure.
>
> I feel a second ADSL line will come from the same exchange in Deptford
> (London) so is not really a backup route.
>
> Is a leased line a sensible option for backup ??(OTT)??
>
> What else can he do?

Bidirectional satellite link anyone?
If it's only for backup, and you don't care about traffic costs,
are there any suitable services?
I know these are available for a not insane amount of money, but I don't
know details.

"Infant Newbie" <(E-Mail Removed)> wrote in message
news:bo338p$5ul$(E-Mail Removed)...
> "Infant Newbie" <(E-Mail Removed)> wrote in message
> news:bo1t97$r3q$(E-Mail Removed)...
> > I need to advise someone on a method of backup for his ADSL as his
> business
> > is growing moe dependant on his ADSL connection and it is a single point
> of
> > failure.
> >
> > I feel a second ADSL line will come from the same exchange in Deptford
> > (London) so is not really a backup route.
> >
> > Is a leased line a sensible option for backup ??(OTT)??
> >
> > What else can he do?
> >
> > Thanks in advance
> >
> >
> Looks like ISDN is the way to go as he already has isdn for voice. I will
> have to look into that. Which Service provider is best? As it will only be
> for occasional use.
>

ISDN will likely be in the same cable to the same exchange so is no better
(and a lot slower) than a second ADSL line of a different contention ratio.