EtherLoop


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EtherLoop

(ETHERnet Local LOOP) A transmission technology from Nortel Networks that combines DSL and Ethernet to deliver up to 6 Mbps between the customer and telco central office (CO). As a point-to-point technology, it eliminates the collision detection used in Ethernet, and it also eliminates much of the crosstalk associated with DSL. Unlike asymmetric DSLs, such as ADSL, which provide higher downstream speed, and unlike symmetric DSLs, such as HDSL, which is uniform in both directions, EtherLoop can vary its rates depending on requirements.

At the central office, an EtherLoop multiplexor separates the traffic, sending voice to the voice switch and IP traffic to an Ethernet switch.
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References in periodicals archive ?
Like DSL, EtherLoop can work over an existing telephone infrastructure; like Ethernet, EtherLoop only transmits when it has information to send, as opposed to traditional DSL, which constantly transmits, even when there is no information to send.
Telephone companies serving rural markets, including NTCA members, were among the first to standardize on EtherLoop for its 1) extended reach of 21,000 feet and beyond, 2) bi-directional bandwidth of up to 6Mbps, 3) ability to work over "dirty" (poor quality) copper wires, 4) low cost of deployment, and 5) reliable performance.
As high-speed service becomes more pervasive, some telephone companies and other service providers are recognizing the value of EtherLoop's spectral compatibility.
EtherLoop also adjusts to make sure its own signal doesn't interfere with the other signals in the binder.
We looked at several different technologies but chose EtherLoop because our staff and technicians can install it easily and, when you turn it on, it works.
Elastic's core technology, however, began with its EtherLoop product, a high-speed copper access solution that is Ethernet over twisted pair, enabling simultaneous voice and data communications up to native rate Ethernet speeds over a single phone line.
EtherLoop is different: It delivers breakthrough access speeds without interfering with or being interfered by existing services in the outside plant cable binder."
* Elastic Networks, featuring Interproxy and EtherLoop, at: www.elastic.com
Nortel's EtherLoop technology effectively stretches the LAN connection over existing copper phone lines, delivering Ethernet packets over distances to 21,000 feet while carrying normal voice traffic over the same line.