ntl Confirms 10Mb Broadband Speed Increase - Page 69

Ignition · 28-09-2005, 13:26

Hehe varies a lot, and I'm not at liberty to divulge node sizes or homes passed per card due to ongoing NDA

Piece of string question really, in student areas not many due to their hunger for the bandwidth

etccarmageddon · 28-09-2005, 15:10

if NTL advertise their contention level as 20 to 1 then the top tier is 3meg so a 38meg pipe is shared by the equivalent of approx 250 3meg as an example.
and it takes 13 users or more running on max for speed to suffer.

if they're all upgraded to 10meg then the pipe has to be shared by a max of 76 10meg users - and it takes 4 users or more running on max for speed to suffer.
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conclusion - we're screwed!

SMHarman · 28-09-2005, 16:12

Yeh but no but, this is why file sharing is the crippling to a network as it results in constant traffic, so if each of those 76 users is file sharing then you're screwed.

Everything else is very bursty, a web page here, a ftp there, a VOIP over there, all this traffic fits in for the few ms it takes to transfer those packets of data.

76 people sharing a 38Mb connection, many office infrastructures have more users that that sharing 10Mb over a floor with only backbones etc at 100/1000Mb.

The contrarian view is that these users now they are on 10Mb will shift the traffic they need to accross the network faster and thus create less of a bottleneck at the UBR.

etccarmageddon · 28-09-2005, 18:03

what about when NTL compete with these LLU 24meg companies and release a 24meg product! all it takes then is a couple of 24meg users maxing out their 38meg pipe and things start to contend big time?

jtwn · 28-09-2005, 18:47

Thats why that'll come around when the new tech is available to be used. Never can say I've heard of a 24mbit cable ISP?

28-09-2005, 19:08

Quote:

Originally Posted by etccarmageddon

what about when NTL compete with these LLU 24meg companies and release a 24meg product! all it takes then is a couple of 24meg users maxing out their 38meg pipe and things start to contend big time?

24 meg will be served by adsl2+

etccarmageddon · 29-09-2005, 08:14

Quote:

Originally Posted by Bill C

24 meg will be served by adsl2+

now I'm really confused! when NTL go to 24meg we'll be moved to ADSL2+? is that what you're saying? so we'd have to replace our cable modems with ADSL modems?

29-09-2005, 08:29

Quote:

Originally Posted by etccarmageddon

now I'm really confused! when NTL go to 24meg we'll be moved to ADSL2+? is that what you're saying? so we'd have to replace our cable modems with ADSL modems?

If and when the new adsl2+ service is released and i am only going off the press releases that where posted here just like everyone else. Then i don't see anyone being forced across. I think it will be just like any other service that you can sign up to. There has been no further information than was released in the press release that we have all seen posted here. So dates and timescales are not available has yet. I am sure with the good connection this site now has with NTL they will get the information as soon as NTL are ready to release it.

But forcing anyone on to adsl2+ i dont think that will happen.

etccarmageddon · 29-09-2005, 08:52

so you recon NTL cant provide us with that sort of speed via the cable network?

Ignition · 29-09-2005, 08:59

Quote:

Originally Posted by etccarmageddon

so you recon NTL cant provide us with that sort of speed via the cable network?

No reckon about it, until Channel Bonded / Wideband / Docsis 3 / whatever it's called this week there's no way that any cable company could offer you that sort of speed using standard DOCSIS. Especially as when people can't hit their max speed they whinge like crazy.

However there is a 24Mbit/8Mbit service over EuroDOCSIS 2 in Europe

Only way to offer that sort of speed is with ethernet over coax which requires extensive access/local network build.

etccarmageddon · 29-09-2005, 09:05

so with 10meg have we hit the max the current cable standard can support?

Ignition · 29-09-2005, 09:34

Quote:

Originally Posted by etccarmageddon

so with 10meg have we hit the max the current cable standard can support?

No but UK people do whinge when they can't hit their maximum speed that they think they absolutely do pay for, guaranteed, 24x7.
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Quote:

Originally Posted by SMHarman

The contrarian view is that these users now they are on 10Mb will shift the traffic they need to accross the network faster and thus create less of a bottleneck at the UBR.

Office network connections tend to have very different traffic profile from residential services - they tend to not have P2P or Usenet binaries being downloaded on them much

They are at their busiest first thing in the morning, lunchtime and just before the end of office hours and most of that traffic is email and web, unlike residential networks where the difference between the quiet times and the busy times can be far lower due to sustained transfers.

If ntl were to break network down to the point where there were 76 users on a downstream they would have less than 20 users to each 4.4Mbit upstream and could offer probably a good 1Mbit upload with that.

Hans Gruber · 29-09-2005, 09:49

Quote:

Originally Posted by Ignition

No but UK people do whinge when they can't hit their maximum speed that they think they absolutely do pay for, guaranteed, 24x7.

Going out on a limb here, but maybe ISPs shouldn't write "upto" in such a small typeface

jtwn · 29-09-2005, 10:10

I thought that if ntl was to use ADSL2+, they would use it to expand their network, not use it inside it.

Ignition · 29-09-2005, 10:11

Quote:

Originally Posted by Hans Gruber

Going out on a limb here, but maybe ISPs shouldn't write "upto" in such a small typeface

Find me any industry where they write the not so good stuff in as large a type face as the headline sale points.

ADSL2+ http://www.adslguide.org.uk/tools/sp...272e9d7e79bc28