3 ms·

T1 maximum speed 1.544 Mbps T3 is about ~45 Mbps Reference: https://en.wikipedia.org/wiki/T-carrier https://en.wikipedia.org/wiki/T-carrier

• lifeisstillgood 6y ago
  My memory is very hazy - too many beers in North London pubs far too many years ago to remember clearly :-0
• tinus_hn 6y ago
  In internetworking a Tier 1 carrier is a carrier that is so interconnected other parties pay to receive traffic from them.
  • zenexer 6y ago
    T1 and Tier 1 are not the same thing.
    • tinus_hn 6y ago
      That’s true. However at least in my memory back in the day people would call the 10 megabit directly connected university connections t1 lines, because of the tier 1 thing.
• hazeii 6y ago
  And it was probably an E3 (Uk/Europe is E1/E3, US/JP is T1/T3)
  • morei 6y ago
    E3 is ~34Mbps, so it probably wasn't. It's true that the E1/E2/E3 hierarchy is used outside the US, but links to the US can be either depending on carrier preference. The T1/T2/T3 and E1/E2/E3 hierarchies join at the STM-1 level: An STM-1 can be subdivided as 4 x E3s or 3 x T3s. This means that on a EU<->US SDH link, an STM-1 can be demuxed into either E3s or T3s, so you can have both standards on the same fiber.