What is the maximum upload speed for BlueYonder cable?

[|Kippa|]

I am just wondering what the maximum upload rate is for BlueYonder connections COULD be. Could the upload rate go higher than 800ksec?

[Graham M]

I doubt it very much.

[nn012]

i think the the highest upload on BY at the moment is 512k, but thats only available to business customers

[Mick]

Telewest's 4MB Speed tier offers an upload rate of 384K.

[|Kippa|]

I've got the BY 4mb connection with 386k upload rate, just hoping that the next upgrade will be at least 512k upload rate, or 512k or higher in future.

[Ignition]

I am just wondering what the maximum upload rate is for BlueYonder connections COULD be. Could the upload rate go higher than 800ksec?

Could be?

In theory 8.8Mbps or so.

[humey]

Under dosci 1, we all share 1meg up pipes (between X amount of users) so you could have 1 meg max, i know peeps abroad on 15meg/1meg

To get by the 1meg limit outside dedi servers, you need wait on dosci 2.

[m4x]

upload is only 128kbps .... lol sh*t i knw

[Ignition]

Under dosci 1, we all share 1meg up pipes (between X amount of users) so you could have 1 meg max, i know peeps abroad on 15meg/1meg

To get by the 1meg limit outside dedi servers, you need wait on dosci 2.

Erm, no you don't, 4.4 or 8.8Mbit.

It's DOCSIS by the way, Data Over Cable Service Interface Specification :rolleyes:

Fastest cable I've ever seen is 10/1. Available from amongst others Optimum Online / Cablevision and Cogeco.

I'm not even going to go into how poor the service would be having multiple 1Mbit upstream users sharing a 1Mbit upstream...

[Graham M]

upload is only 128kbps .... lol sh*t i knw
Helpful first post, considering it doesnt answer the question... :dozey:

ah well :welcome: anyways :D

[Ignition]

To save this thread dragging on any more:

Upstream capacities on modern network, including those that are pretty much unachievable - the higher up the bits/symbol count goes the harder it is for the networks to reliably run, and to run past 16QAM on the upstream is pretty special.

DOCSIS 1.0:

3.2MHz wide QPSK, symbol rate 2.56Msym/s @ 2 b/sym = 4.4Mbps payload

3.2MHz wide 16QAM, symbol rate 2.56Msym/s @ 4 b/sym = 8.8Mbps payload (not always implemented).

DOCSIS 1.1:

As above except 16QAM support is required.

DOCSIS 2.0:

As above +

3.2MHz wide 8QAM, symbol rate 2.56Msym/s @ 3b/sym = 6.6Mbps payload
3.2MHz wide 32QAM, symbol rate 2.56Msym/s @ 5b/sym = 11Mbps payload
3.2MHz wide 64QAM, symbol rate 2.56Msym/s @ 6b/sym = 13.2Mbps payload
3.2MHz wide SCDMA 128QAM, symbol rate 2.56Msym/s @ 7b/sym = 15.4Mbps payload
6.4Mhz wide QPSK, symbol rate 5.12Msym/s @ 2b/sym = 8.8Mbps payload
6.4MHz wide 8QAM, symbol rate 5.12Msym/s @ 3b/sym = 13.2Mbps payload
6.4MHz wide 16QAM, symbol rate 5.12Msym/s @ 4b/sym = 17.6Mbps payload
6.4MHz wide 32QAM, symbol rate 5.12Msym/s @ 5b/sym = 22Mbps payload
6.4MHz wide 64QAM, symbol rate 5.12Msym/s @ 6b/sym = 26.4Mbps payload
6.4MHz wide SCDMA 128QAM, symbol rate 5.12Msym/s @ 7b/sym = 30.8Mbps payload.

OK There's the DOCSIS specs, should be the thread sorted now, Telewest currently run DOCSIS 1.1.

Ah to save a 'how much download speed can be offered' thread ;) all DOCSIS specs are the same on this one so these apply to TW network:

6MHz wide 64QAM downstream, symbol rate 5.057Msym/s @ 6b/sym = 27Mbps payload
6MHz wide 256QAM downstream, symbol rate 5.36Msym/s @ 8b/sym = 38Mbps payload.

Please note that I'm giving the throughputs you can realistically expect to see from all of these, not the raw line rate, if you want that get a calculator and multiple symbol rate by bits/symbol, is also why the numbers aren't exact, impossible to predict exact yield at any one time.

Question answered? :p:

[jtwn]

..is there a limit to this man's knowledge? :shocked: :p: :tu:

[Graham M]

What a great post! Reps delivered appropriately :D

[humey]

What i said was true outside the typos, i did state we all share pipes to upload between X amount of users, so 1meg is max, your info is same but has more tech and confusing figures.

I asked a user in USA (op in my irc channel who is on 15meg/1meg), who is in the know how, he didnt rant with loads of tech, just in layman terms you share upload pipes so it not matter if pipe is 4.4megs like above, you are sharing it with so many users you could be given 1meg max, but most get 128-256k on cable.

Nice BY gave us 4meg users 384k but id love 512k.

You wont see uplaods go by 1meg till docsis 2.

[Ignition]

I asked a user in USA (op in my irc channel who is on 15meg/1meg),

Actually he's on Verizon FIOS, fibre to the home, 15/2.

It's perfectly possible to go over 1Mbit, just at the moment no-one has. No desperate commercial need.

You stated we shared 1Mbit pipes, bit different from saying that 1Mbit is the max due to contention considerations.

[|Kippa|]

Big thanks for all the information, hopefully BY will upgrade to 512k upload within a year or so. I use it mainly for hosting Command & Conquer Generlas game which need at least 386k upload for a 3v3 game and would probably need 512k upload rate for a 4v4, it is one of the only games I really play. On the subject of the line conneciton do you think that in the next 10 years they will change cable from the home to the exchange to fiber optic? If NTL and BY merger they should be able to raise enough capital to do it in future.

[Ignition]

Big thanks for all the information, hopefully BY will upgrade to 512k upload within a year or so. I use it mainly for hosting Command & Conquer Generlas game which need at least 386k upload for a 3v3 game and would probably need 512k upload rate for a 4v4, it is one of the only games I really play. On the subject of the line conneciton do you think that in the next 10 years they will change cable from the home to the exchange to fiber optic? If NTL and BY merger they should be able to raise enough capital to do it in future.

Fibre is moved closer to the home with each and every network resegmenation and node split. Inevitably at some point either fibre or ethernet to the home will be the status quo in the UK.

As far as when goes, piece of sting, how long?

[WhatEva]

BlueYonder max upload - 4Mbit/Sec :D


.... you just got to press the right buttons ;)

[janipewter]

Under dosci 1, we all share 1meg up pipes (between X amount of users) so you could have 1 meg max, i know peeps abroad on 15meg/1meg

To get by the 1meg limit outside dedi servers, you need wait on dosci 2.

I have a friend in Sweeden who pays less than I do for 4Mbit/384Kbit, but receives a symmetrical 30Mbit connection. I hope the UK catches on soon.

[Ignition]

Sweden's 10Mbit and 100Mbit connections are unfortunately delivered with fibre to the home, and it'll be a while before much of the UK beyond a few trial areas has that available.

If it's any consolation though a US Cableco (Cox) has recently released 15mbit downstream 2Mbit upstream product to Southern California, and Adelphia Cable is to release 16Mbit/2Mbit product.

These are using DOCSIS 1.1 / 2.0.

Don't lose hope completely just yet, between the upgrades and resegmentation that ntl and Telewest are both doing and the advent of the channel bonding that DOCSIS 3 will allow speeds should get quite impressive in the not too distant future.

I imagine we (consumers) will be between 8 and 10Mbit in the not too distant future. BT are going to 8Mbit nationwide in November so the cable companies will be forced to compete or lose out to the mass of marketing that'll generate.