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Is That An OC-768 In Your Pocket?

Posted by ryuzaki0 on from the or-are-you-just-happy-to-see-me dept.

bdigit writes: "Qwest communications using Nortel Networks OC-768 was able to transfer 40Gbps over 435 miles(700 km) breaking the record for the fastest land speed record. Qwest has plans to begin deploying OC-768's in quarter three of 2001." Note: if they need beta testers, just lemme know! I can write a mean bug report ("My pr0n is only getting 30gps! Please fix!")

5 of 128 comments (clear)

  1. OC-n = (n = STS-1 = 51mb) * 768 or 48 or 12 or 3 by plastik_s · · Score: 5

    T1,T3 are transmission rates that descibe electrical interfaces. A T1 link is 1.5mb ( bits )
    T3 = 45mb. OC ( optical carrier ) is a BellCore
    description of transmission in SONET networks. ( Synchronous Optical Network ).

    The speed of OC-n is derived from the number of interleaved STS streams. STS-1 is 51mb per second
    All OC-n rates ( lowest is OC-3 which sts-1x3 ) are derived from a multiple of this.

    OC-768 = 768xSTS1 rate = 39168mb per second
    OC-48 = 48xSTS-1 rate = 2448mb per second
    OC-3 = 3xSTS-1 rate = 153mb per second

    OC-n rates can be described as concatenated ( a fat pipe ). or Channelized whereby an OC pipe contains multiple channels ( STS payloads )each
    of which can contain different payloads ( packets or atm cells ).
    Oc-3c is a concat. fat pipe.
    Oc-3 is a channelized pipe.

  2. I'm a parent soon. I can hear myself saying... by hardaker · · Score: 5

    "In my day, sonny, we only had a 64kbps connection to my house. Thats right. And that's when I was already an adult. Now every house comes with a standard 40Gbps line. Aren't you special. You don't know what its like to have to wait for your keystrokes to be echoed back to your terminal screen. Oh, sorry, you don't even know what a keyboard is do ya. Get outta here."

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  3. Missing something... by tbo · · Score: 4

    Where's the obligatory conversion of 40Gbps into X Libraries of Congress/second?

  4. Re:Mmmm, bandwidth. by CyberOptic · · Score: 4

    I really think you should stop complaining about cable. You are fortunate to have 512KB+ cable access. Me and ALOT others only have access to a regular 33.6 or 64 Kbps line and don't even stand a chance of getting cable or similar. Any way..Cable IS considered a high-speed access, and well...it actually is pretty fast, so please stop complaining, when you don't have anything to complain about.

  5. Fastest single signal by Rhys+Dyfrgi · · Score: 4
    This is only the fastest single signal, it isn't the fastest single fiber system. Of course, if they increase the number of signals above the 4 they mention on their press release to the maximum 80 allowable by DWDM, then they can get up to 3.2tbps (terrabits per second) over a single fiber.

    Of course, as this part of a tutorial indicates that higher bitrates allow for fewer channels, getting 80 might not be possible, so we may just have to settle for `only' 160gbps.
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