loading
2Comments

Tell us about yourself!

Complete Your Profile
  • Dmunegr commented on chrismake's instructable How-to make your own Ethernet "splitter"7 months ago
    How-to make your own Ethernet "splitter"

    Because one might try to connect a phone device or a phone line into a data jack. An analog phone line rings at 90 Volt AC and it talks at 48 Volt. One can easily see that a user mistakes might blow up an entire cheap switch. since people usually try before they think, this complex wiring scheme has probably saved more than 1 000 000 ethernet switch in 20 years.

    Because one might try to connect a phone device or a phone line into a data jack. An analog phone line rings at 90 Volt AC and it talks at 48 Volt. One can easily see that a user mistakes might blow up an entire cheap switch. since people usually try before they think, this complex wiring scheme has probably saved more than 1 000 000 ethernet switch in 20 years.

    View Instructable »