BT 21CN Roll out? - Page 2

NoKnowledge · 06-01-2007, 14:01

For some reason I call 21CN, twenty-first century.

It's a good thing my name is NoKnowledge

Richy99 · 09-01-2007, 11:14

Quote:

Originally Posted by NoKnowledge

BT's target date for 21CN for my area is 4th quarter 2009 (so basically, 2010) according to http://www.samknows.com/broadband/search.php

Got my exchange code from http://www.dslzoneuk.net/distance.php

Anybody else getting 21CN earlier?

looks like we in cardiffare going to be the first place to get it

Tech_Boy · 09-01-2007, 11:35

Quote:

Originally Posted by Richy99

looks like we in cardiffare going to be the first place to get it

Whilst 40 odd miles down the road in Skewen, Q3 2011

Robster · 09-01-2007, 13:11

The site BT about 21CN is all very nice but a lot of it is written in abstracts and marketing speak.

What will it actually mean in practical terms for customers? Any distinct advantages or improvements in relation to services received?

Looking at this it seems that its partly a consolidation and long term cost saving exercise.

Stuart · 09-01-2007, 13:46

I personally can't see any real advantage for the consumer. After all, it does not look like you can do anything with 21CN that you can't with the current network. I am not even sure if it will be faster as the "last mile" is apparently the major holdup on ADSL, so unless BT are going to replace this with Ethernet or Fibre, it won't change the maximum speed.

Chrysalis · 09-01-2007, 15:25

Quote:

Originally Posted by Robster

The site BT about 21CN is all very nice but a lot of it is written in abstracts and marketing speak.

What will it actually mean in practical terms for customers? Any distinct advantages or improvements in relation to services received?

Looking at this it seems that its partly a consolidation and long term cost saving exercise.

Correct, good to see you took to the time to see pass the hype and research it. ADSL2+ is coming alongside 21cn, wether or not they are classing this as part of 21cn or just doing it at the same time for marketing reasons I dont know. But on the whole it looks like 21cn is something to reduce their costs and they have decided to market it as some magic upgrade, most people might be fooled into thinking the speed increases from adsl2+ are as a result of 21cn when it will have nothing to do with it.

As Stuart said as well for the people who dont have short lines the advantages will be very small if any, adsl2+ most of the speed benefits are lost on longer lines.

In addition things like this are worrying.

Quote:

Quality: Voice quality on 21CN will be the equivalent or better than PSTN as
the use of Multi Protocol Label Switching (MPLS) prioritisation technology will ensure voice calls are given precedence over less time critical communications such as email. By employing state-of-the art technology, helping to define appropriate industry standards and through rigorous assessment of voice quality, BT is seeking to ensure that voice quality on 21CN is optimised. The bottom line is that no-one should notice any difference.

So 21cn will have qos and is needed since voice will go over VOIP backhaul, is this going to be a 1st stage in wholesale level traffic shaping and premium fees for unshaped traffic? only time will tell.

Robster · 10-01-2007, 02:05

From reading over some information about this before, I had been left with the impression that 21CN included installing ADSL equipment at street cabinet level, in order that more people can get high speed connections and effectively receive "next generation" services like BT Vision.

It would seem that's not the case and I guess its very unlikely to happen even in the next 5 years, when at the moment some exchanges have yet to be ADSL enabled.

Vegeta · 13-01-2007, 01:44

Jan-Mar 2009 it says for me.

Dingbat · 16-01-2007, 21:43

Quote:

Originally Posted by Chrysalis

Correct, good to see you took to the time to see pass the hype and research it. ADSL2+ is coming alongside 21cn, wether or not they are classing this as part of 21cn or just doing it at the same time for marketing reasons I dont know. But on the whole it looks like 21cn is something to reduce their costs and they have decided to market it as some magic upgrade, most people might be fooled into thinking the speed increases from adsl2+ are as a result of 21cn when it will have nothing to do with it.

Partly right, although ADSL2+ and 21CN are completely separate programmes with very little cross-over.

BT cannot keep on using the same aging technology (System X is 20 years old!) so needs to modernise. Moving away from traditional voice-based technology to IP is a logical step as BT will then not need to have all the different 'high-level' networks (voice, data, packet switching, even telex!).

At the same time, there are literally thousands of BT exchanges arcross the country which need maintaining. Thanks to the changes in technology over the years, most of them are now at no more than 25% occupancy. So getting rid of the local exchange would save lots of money.

NTL and Telewest were quite fortunate that they could build from a clean sheet, and not have the burden of an aging fault-ridden legacy network.

As an aside, just over 25 years ago, there was a ripple of amazement in my office when a residential customer rang to order a modem from us - the very latest 300bit/sec one. Up to then, we'd only offered them to businesses.

dragon · 17-01-2007, 23:36

Quote:

Originally Posted by Dingbat

Partly right, although ADSL2+ and 21CN are completely separate programmes with very little cross-over.

BT cannot keep on using the same aging technology (System X is 20 years old!) so needs to modernise. Moving away from traditional voice-based technology to IP is a logical step as BT will then not need to have all the different 'high-level' networks (voice, data, packet switching, even telex!).

At the same time, there are literally thousands of BT exchanges arcross the country which need maintaining. Thanks to the changes in technology over the years, most of them are now at no more than 25% occupancy. So getting rid of the local exchange would save lots of money.

NTL and Telewest were quite fortunate that they could build from a clean sheet, and not have the burden of an aging fault-ridden legacy network.

As an aside, just over 25 years ago, there was a ripple of amazement in my office when a residential customer rang to order a modem from us - the very latest 300bit/sec one. Up to then, we'd only offered them to businesses.

you forgot the axe10 which they use in some places instead of System X.