Connect with us

half duplex

Discussion in 'Electronic Basics' started by [email protected], Oct 30, 2006.

Scroll to continue with content
  1. Guest

    I was just wondering if half duplex Ethernet uses all four pins on the
    RJ45 plug (like full duplex).

    Thanks.
     
  2. Baron

    Baron Guest

    No ! Only two.
     
  3. John

    John Guest

    It uses the standard pin-out. In this case, half-duplex refers to the
    limitations of the netwrok card(s) being used.

    John
     
  4. Guest

    Which two?
     
  5. Baron

    Baron Guest

    Of the top of my head ! Can't remember... Google RJ45 Wireing.
     
  6. Lionel

    Lionel Guest

    Well, RJ45s have 8 pins, not 4. And yes, half-duplex uses the same
    pins as ful duplex. The difference between half & full duplex is
    whether the port can receive & transmit at the same time, (Full can,
    half can't), which has nothing to do with the number of pins or pairs
    required.

    If you're asking because you want to save on wiring or somesuch, what
    you really want to know is how many pins/pairs are required for
    differnet Ethernet standards. If you describe your requirements in
    more detail, I'm sure someone here will be able to answer your
    question more usefully. :)
     
  7. Lionel

    Lionel Guest

    Incorrect. 10bT & 100bT both require two pairs, 1000bT requires all 4
    pairs.
     
  8. feebo

    feebo Guest

    unless this is a deliberate deception (homework troll?) the answer you
    give is nonsense.
     
  9. feebo

    feebo Guest

    RJ45 uses 8 connectors (4 pairs)... RJ11 uses 4 connectors.

    you need them all regardless of the duplex setting - this article
    gives a nice pic of how to connect:

    http://www.lettronics.com/default.asp?page=article_rj45

    Duplex in ethernet only refers to the network component (including -
    at this level - the network card in your PC) being able to send and
    recieve simultaneously (full duplex) or only to do one at a time (half
    duplex)
     
  10. Baron

    Baron Guest

    Not really ! An RJ45 connector has 8 pins, or if you prefer 4 pairs of
    wires. Two independent full duplex Ethernet channels can be run down a
    single length of cat 5 cable.

    Since the OP asked if half duplex uses all four pins then the answer I
    gave was correct !
     
  11. feebo

    feebo Guest

    they call this "using the letter of the law to defeat the spirit of
    the law"
     
  12. feebo

    feebo Guest

    just read the OP and your reply and am now more convinced than ever
    you are a bullshitter!

    the op asked if half duplex used 4 pins (like FDX) it does. so the
    answer is yes. you replied No, only two - nothing was said about pairs
    you implied only two pins (wires) are used for HDX.

    You are Billy Bullshit and I claim my $10
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-