Ethernet over copper

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Ethernet over copper (also known as EoC) is a form of Ethernet in the first mile connection that uses twisted pair copper telephone wire. It uses the same 8P8C modular connector used by conventional Ethernet over twisted pair. The physical layers used for Ethernet over copper are 2BASE-TL and 10PASS-TS.

Compatibility with data networks and routers[edit]

While the connection on an Ethernet over copper cable is similar to that of a conventional Ethernet cable, the physical layers used for Ethernet over copper are different from the physical layers used for conventional Ethernet, so special adapters are required for Ethernet over copper; the Ethernet over copper connection cannot be plugged into a conventional Ethernet port on a switch, router, or computer.

EoC is usually delivered as an "internet facing" service. EoC can also be delivered other ways. It can interface with private networking (i.e., an existing WAN, MPLS, or VPN network). Can also support SIP, PRI, analog, and hosted PBX voice services as well.[1]

Advantages and disadvantages[edit]


As Ethernet over copper cabling is made up of twisted telephone wire, it is affordable. This consistency of Ethernet between the service provider core and the customer network reduces overhead, increasing performance & providing a more consistent connection to the user.[2]


As with DSL, distance is a factor. The further you are from the central office, the less speed you can receive. Additionally, central offices with EoC equipment are limited.[3]


  1. ^ "Ethernet over Copper | EoCu Products | TDM Business Services from". ADTRAN. Retrieved 2012-09-25. 
  2. ^ T1 Rex (2012-02-06). "Telexplainer: What Ethernet over Copper Is All About". Retrieved 2012-09-25. 
  3. ^ Radcliff, Stephen. "The Future of Ethernet Over Copper". Ethernet over Copper News. Retrieved 17 May 2013.