*******
Note that there is an Internet2, and you\'re not on it
It has a map. CERN dumps particle traces over that Internet2,
and there would be a ton of 100Gbit/sec links. There\'s no
Hollywood movies on this Internet. Only particle porn.
On 3/2/2023 8:19 PM, Commander Kinsey wrote:
On Sat, 25 Feb 2023 07:53:24 -0000, Paul <nospam@needed.invalid> wrote:
On 2/25/2023 1:49 AM, Commander Kinsey wrote:
On Thu, 23 Feb 2023 10:20:04 -0000, Ed Cryer <ed@somewhere.in.the.uk> wrote:
Commander Kinsey wrote:
https://www.sciencealert.com/old-nasa-papers-have-revealed-a-map-of-the-entire-internet-from-1973
Interesting.
I saw a lot of PDP-11s but never a PDP-10. I also remember the acoustic
couplers on modems. You placed a phone in a holding yoke and dialled,
and got the famous crackle-crackle of modem-handshakes.
Why were those handshakes so long? Did they include tests ate different baud rates to see which worked ok?
https://oona.windytan.com/posters/dialup-final.png
Jeez, so many standards they have to choose from. I guess that\'s incremental improvements. I see they can now send 300Mbit down a copper phone line. It\'s available 1 fucking block from me (aswell as 1000Mbit fibre to the premises), but not here. Some kind of problem getting the cable to this block. I\'ve asked them to elaborate. If it\'s planning permission I\'m going to go down to the council office and kick up fuck, and I mean physically.
My sister could imitate a ZX spectrum loading, I never asked her to try a modem.
There is likely to be a tighter reach limit on VDSL2.
https://en.wikipedia.org/wiki/VDSL
\"Second-generation systems (VDSL2; ITU-T G.993.2 approved in February 2006)[5] use
frequencies of up to 30 MHz to provide data rates exceeding 100 Mbit/s simultaneously
in both the upstream and downstream directions. The maximum available bit rate is
achieved at a range of about 300 metres (980 ft); performance degrades as the
local loop attenuation increases.\"
\"VDSL2 standard is an enhancement to ITU T G.993.1 that supports asymmetric and
symmetric transmission at a bidirectional net data rate up to 400 Mbit/s
on twisted pairs using a bandwidth up to 35 MHz.\"
The twisted pairs have slightly different performance through a neighbourhood.
The phone company set up a table and a beach umbrella for their staff,
and for two or three days, they were doing line characterization, to
sort the wires into \"good enough for VDSL\" and \"only enough for ADSL2\".
I lost my pair and was given another pair. So my pair was too good for me
*******
On Fri, 03 Mar 2023 04:14:54 -0000, Paul <nos...@needed.invalid> wrote:
On 3/2/2023 8:19 PM, Commander Kinsey wrote:
On Sat, 25 Feb 2023 07:53:24 -0000, Paul <nos...@needed.invalid> wrote:
On 2/25/2023 1:49 AM, Commander Kinsey wrote:
On Thu, 23 Feb 2023 10:20:04 -0000, Ed Cryer <e...@somewhere.in.the.uk> wrote:
Commander Kinsey wrote:
https://www.sciencealert.com/old-nasa-papers-have-revealed-a-map-of-the-entire-internet-from-1973
Interesting.
I saw a lot of PDP-11s but never a PDP-10. I also remember the acoustic
couplers on modems. You placed a phone in a holding yoke and dialled,
and got the famous crackle-crackle of modem-handshakes.
Why were those handshakes so long? Did they include tests ate different baud rates to see which worked ok?
https://oona.windytan.com/posters/dialup-final.png
Jeez, so many standards they have to choose from. I guess that\'s incremental improvements. I see they can now send 300Mbit down a copper phone line. It\'s available 1 fucking block from me (aswell as 1000Mbit fibre to the premises), but not here. Some kind of problem getting the cable to this block. I\'ve asked them to elaborate. If it\'s planning permission I\'m going to go down to the council office and kick up fuck, and I mean physically.
My sister could imitate a ZX spectrum loading, I never asked her to try a modem.
There is likely to be a tighter reach limit on VDSL2.
https://en.wikipedia.org/wiki/VDSL
\"Second-generation systems (VDSL2; ITU-T G.993.2 approved in February 2006)[5] use
frequencies of up to 30 MHz to provide data rates exceeding 100 Mbit/s simultaneously
in both the upstream and downstream directions. The maximum available bit rate is
achieved at a range of about 300 metres (980 ft); performance degrades as the
local loop attenuation increases.\"
\"VDSL2 standard is an enhancement to ITU T G.993.1 that supports asymmetric and
symmetric transmission at a bidirectional net data rate up to 400 Mbit/s
on twisted pairs using a bandwidth up to 35 MHz.\"
The twisted pairs have slightly different performance through a neighbourhood.
The phone company set up a table and a beach umbrella for their staff,
and for two or three days, they were doing line characterization, to
sort the wires into \"good enough for VDSL\" and \"only enough for ADSL2\".
I lost my pair and was given another pair. So my pair was too good for me
*******
It\'s full fibre I\'m after, I can\'t get that either. I think what\'s happened is the cabinet nearest to me is full. The cabinet I\'m served from with copper is too far for VDSL, and too far to make it worth their while running fibre that far. I guess they\'re going to put a new cabinet in at some point. They said it\'s a 6 month job which will start in 1.5 years :-(
We got some fiber installed here last year, and that will take the pressure
off running VDSL2. Thank goodness the cable company keeps them honest, by
offering higher and higher rates. They even added an extra speed offering
to the fiber (3gbit/sec), but I doubt our equipment at the corner supports that.
I\'m sure the lights would dim, if you downloaded using that. Probably the
only thing that runs at 3gbit/sec is Speedtest.net . And I bet the Netflix
still buffers.
You\'d need an expensive network card. 1Gbit is pretty standard.