Fibre Optic, no difference noticed so far...

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  • drawflex
    DK Veteran
    • Dec 2008
    • 440

    #16
    8 bits in a byte....

    anything quoted in megabits... divide by 8.. to get max speed in megabytes / second.

    ISPs just use megabits to make it sound better, no-one else really ever quotes size/speed in bits... had me stumped before i learned this too.

    Usually , when written b = bits.... B = bytes ... eg 20 Mb/s / 2.5 MB/s
    Last edited by drawflex; 1 September, 2011, 23:43.
    'He's not the messiah, he's a very naughty boy'.

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    • rabujas
      Newbie
      • Sep 2011
      • 14

      #17
      they are both IP conections and the speedlimit is not made by the cooper wiring or the fiber optic.

      Most network conections these days use a CATTV kind.

      It's CMTS (cable modem termination System), coper wiring until the Optical node, fiber wiring to the "cell" and another Optical node to take care of the modulation to coper again.

      It uses the docsis3.0 process and it can give u speeds up to 360 Mb/s it does have an upload limit. because it normally uses for the upstreams a 6,4 Mhz channel bounding up to 2 channels (some say you could use 4), but the amplifiers will cut anything over 85 mhz, so it does get crowded, and because of ingress noise u cant use more then 64QAM modulation. Wile the download normally uses a 4 channel bounding group of 8Mhz channel with 256QAM and can go up to 8 channels, each of this "channels" have 50 Mb/s capacity

      The ping does not get slower because of it. Your ping to the CMTS is normaly under 2ms.


      Fiber optics do not necessary make this process faster, because most times u cant get these speeds because the congestions is on the interface at the CMTS, and that has nothing 2 do with fiber optics. Fiber optics is just another way to pass information, it is mutch better the cooper wiring in some very specific situations. Like, long distance and lots of bandwith needs. It has...

      sorry, getting lost here. Just tell me, when u changed to fiber, what was the speed you paid for?


      PS- sorry about my english

      PS2 - ahhh, and byte it's a 8 bit group. Something like 11110000. Whe use the byte because it is the number of bits needed to assing a numeric number to any ASCI caracter. Actualy they use the bit, because it's the correct way to measure speed. It's the number of bits they can "move" in a second.
      Last edited by rabujas; 22 September, 2011, 00:14.

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      • redjacek
        Newbie
        • Sep 2011
        • 1

        #18
        to get a proper (fast) connection between users you need to wait until they finish fibre rolling out stage. It seems to me only marketing works so far.

        Comment

        • drawflex
          DK Veteran
          • Dec 2008
          • 440

          #19
          Originally posted by rabujas
          they are both IP conections and the speedlimit is not made by the cooper wiring or the fiber optic.

          Most network conections these days use a CATTV kind.

          It's CMTS (cable modem termination System), coper wiring until the Optical node, fiber wiring to the "cell" and another Optical node to take care of the modulation to coper again.

          It uses the docsis3.0 process and it can give u speeds up to 360 Mb/s it does have an upload limit. because it normally uses for the upstreams a 6,4 Mhz channel bounding up to 2 channels (some say you could use 4), but the amplifiers will cut anything over 85 mhz, so it does get crowded, and because of ingress noise u cant use more then 64QAM modulation. Wile the download normally uses a 4 channel bounding group of 8Mhz channel with 256QAM and can go up to 8 channels, each of this "channels" have 50 Mb/s capacity

          The ping does not get slower because of it. Your ping to the CMTS is normaly under 2ms.


          Fiber optics do not necessary make this process faster, because most times u cant get these speeds because the congestions is on the interface at the CMTS, and that has nothing 2 do with fiber optics. Fiber optics is just another way to pass information, it is mutch better the cooper wiring in some very specific situations. Like, long distance and lots of bandwith needs. It has...

          sorry, getting lost here. Just tell me, when u changed to fiber, what was the speed you paid for?


          PS- sorry about my english

          PS2 - ahhh, and byte it's a 8 bit group. Something like 11110000. Whe use the byte because it is the number of bits needed to assing a numeric number to any ASCI caracter. Actualy they use the bit, because it's the correct way to measure speed. It's the number of bits they can "move" in a second.
          Are you taking the piss ? Im reading through that big chunk of text youve copied/pasted in, and i'm still struggling to find anything constructive... Or even really relevant.
          'He's not the messiah, he's a very naughty boy'.

          Comment

          • janobi
            V.I.P. Member
            • Mar 2008
            • 1624

            #20
            Originally posted by drawflex
            Are you taking the piss ? Im reading through that big chunk of text youve copied/pasted in, and i'm still struggling to find anything constructive... Or even really relevant.
            It's actually a very informative post about a fibre optic network.

            Main point here is that you can only dl as fast as someone can upload. You can have a 100/100 seedbox but if the person seeding has an upload of 30kbps then that is all you will download at.

            @op drop me a pm with email address and I will invite you to a private tracker so you can max out your speeds. Although you will have to seed back or get banned


            Sent from my cave in wales ***128522;

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