I'm using a 10/100/1000 BASE-T fiber transceiver.

What does this mean?

  • $\begingroup$ Hi Rachael, welcome to engineering.SE. Your question is rather vague to anyone who hasn't worked with this specific component. Can you please add some more context to your question? A link to the product you are talking about would be particularly helpful. $\endgroup$ Jun 1 '15 at 20:15
  • $\begingroup$ Are you asking about how the different transmission speeds might affect the technology used, or are you just looking for megabits/sec? And it shouldn't be "-T" if it is fiber, right? $\endgroup$
    – hazzey
    Jun 1 '15 at 20:26

The 10/100/1000 refers to the transmission rate in megabits per second
= millions of bits per second.
Also may be shown as Mbps or Mb/s.

1000 Mb/s is a data rate typically achieved by modern LAN interfaces.

10 and 100 mb/s are the maximum rates achieved by older standards. A 10/100/1000 label is indicating that the device operates at the 1000 Mb/s rate where it is interfacing with equally capable equipment, but is also able to work at the 10 or 100 Mb/s rate and standards when the equipment it is interworking with is limited to those rates.

As hazzey notes, Base-T does not apply to fibre based equipment. It is a designation indicating that twisted pair is used as the transmission medium.
The original "Ethernet" LAN interface (now part of IEEE 802.3-xxx) used coaxial cable and operated at 10 Mb/s. When twisted pair interfaced alternatives were introduced, the name BASE-T was introduced for twisted pair rather than coaxial cable interconnected equipment. 10 Base-T was used to designate 10 Mb/s twisted pair equipment.
"Just to confuse" designations 10Base5 and 10Base2 were designations relating to thin-coax 10 Mb/s Ethernet in the 1980s.

Wikipedia - Gigabit Ethernet - nominally re 1000 Mb/s systems but covers the historical development.

Ethernet Fibre and twisted pair interfaces exist but that is not what you are dealing with.


Ethernet over twisted pairs

Wikipedia - 10BASE2

Wikipedia - 10BASE2

10BASE2 & 10BASE5 eternet andhere and here



Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.