Symmetric - EFM (Ethernet in the First Mile)

Also called ELM, this Ethernet over copper service provides most of the benefits of fibre Ethernet at a lower price point and usually with a faster installation time. It uses sophisticated hardware bonding of multiple G.SHDSL services running over EPS8/EPS9 Baseband circuits to achieve speeds up to 35Mb symmetrical with SLAs. It is uncontended. By using between 2 and 8 bearer circuits this technology is resilient to partial circuit loss and will simply run at a lower speed until fixed.

However, despite the pros, the technology is slowly dying as it’s based on bonded pairs of copper and increasingly Fibre-To-The-Cabinet (FTTC) and Fibre-To-The-Premises (FTTP) is more commonly used as an alternative for lower bandwidth needs.