21cn - RFS date (on my exchange)

JC_Derby

What will this mean for me?any immediate speed increases. Or just the possibility of increases in the future?

JC_Derby

anyone at all?

brewerdave

The possibility is of switching to ADSL2+ on 21CN from ADSL Max on 20CN- this would mean an increase in speed IF you are not too far from the exchange.If your current synch speed is less than ~ 4Mb (line attenuation ~ 54db) then you probably wouldn't see any significant speed increase. Not all ISPs will switch you over to ADSL2+ automatically ,some may charge extra also.
Finally your modem/router has to be capable of dealing with ADSL2+; Most modern routers will - but older ones won't -the one I'm currently using from Buffalo is ~ 8 years old and isn't ADSL2+ capable.

JC_Derby

brewerdave wrote: »

The possibility is of switching to ADSL2+ on 21CN from ADSL Max on 20CN- this would mean an increase in speed IF you are not too far from the exchange.If your current synch speed is less than ~ 4Mb (line attenuation ~ 54db) then you probably wouldn't see any significant speed increase. Not all ISPs will switch you over to ADSL2+ automatically ,some may charge extra also.
Finally your modem/router has to be capable of dealing with ADSL2+; Most modern routers will - but older ones won't -the one I'm currently using from Buffalo is ~ 8 years old and isn't ADSL2+ capable.

Thank you, im with Bt and have there homehub 2. get a dl speed of 6.5-7mb, downstream attenuation is 14db

Buzby

Speed will still depend on the loading at your exchange and the users local to you - so impossible to quantify. 21CN is a major change in technology with all traffic fully digital until it arrives at your local distribution point (previously it was at the exchange). That said, it MAY give better BB speeds, but they'll never guarantee it!

JC_Derby

Well, we shall see after Friday, as soon as sam knows confirms its been upgraded.

brewerdave

On an attenuation of 14db theoretically you could synch at ~ 22400mb/sec with a profile of ~ 19750 but the other thing to be aware of.is that ADSL2+ is more susceptible to errors which can restrict your throughput if you haven't got a "clean" line. Good luck when you get it:T - wish it was available on my exchange!!:(

JC_Derby

No difference this morning, though says completed on Sam knows. Might ring bt at the end of the week if no difference by then.

We live in a village, moved from a 20 meg virgin connection about 5 years ago, so that was a shock! I'd probably have 50meg plus where i was.

brewerdave

AFAIA it won't happen automatically - never been with BT for b/band so don't know if they switch you over to adsl2+ one at a time on the exchange, or only by request.
I know that my ISP (Plusnet) have had to be asked for the speed upgrade on converted exchanges

JC_Derby

email received today

Hello,
On 04-Dec-12, we’ll be upgrading your local phone exchange. That means you’ll get a stronger, more reliable broadband connection. (It might make it a bit faster, too.)
What will happen on the day?

At some point before 6pm, we’ll switch off your broadband and phone for a few minutes. They should restart again automatically when we’ve finished the upgrade. But if they don’t, just turn your BT Home Hub off and on again. If you’re not using your BT Home Hub or BT supplied hub-router at the moment, we recommend you reconnect it to get the best out of your broadband. It’ll also help us fix problems if any crop up.
When will the upgrade be finished?

Although the technical stuff will all happen on 04-Dec-12, your line will need some time to settle down. That’ll take up to ten days. Your broadband might slow down or even stop now and again. But don’t worry, that’s normal.
The best thing to do is leave your BT Home Hub on and use your broadband as much as you like. Then your line should settle fairly quickly.
Will it affect my BT Vision?

Only if you’re actually watching an On Demand programme during the upgrade. Then you’ll see an error message.
After the upgrade, everything should restart automatically. But if you get an error message, restart your BT Vision box manually. To do that, just hold down the power button for about six seconds.
Any recordings you’ve saved or scheduled will still be there.
How can I get BT Infinity?

BT Infinity is our superfast fibre broadband. If we can offer it to you, we’ll let you know in a separate email or letter. Or you can check for yourself at bt.com/infinity
Anything else?

If there’s anything else connected to your phone or broadband line, you might need to restart them after the upgrade.
Where can I get more information?

At bt.com/networkupgrade. You can get in touch with us from there too.
Thanks for choosing BT,
Warren Buckley
Managing Director, Customer Service

JC_Derby

"upgrade to 21cn should be possible if your exchange has been upgraded. However BT do not appear to rollout the upgrade to everyone on the exchange at the same time - appears to be phased."