Bonded DSL Rings (BDR) is a technology lets rural and urban telcos move voice, video & data traffic over their existing copper telephone lines at speeds of up to 400 Mbit/s. Installation costs for BDR are less than 1/20th of optical fiber. A proof of concept of BDR was displayed at the Broadband World Forum in Berlin, Germany in October 2007 and at the MINT Lab in Edmonton, Canada in November 2007 by Genesis Technical Systems Corp. The patent for Bonded DSL Rings is still pending.
BDR works by combining existing telecom standards, and uses existing copper pairs. BDR combines the capabilities of VDSL2, DSL Bonding (using G.Bond), Resilient Packet Rings (RPR) technologies and add-drop multiplexers (ADM) in a collector ring instead of the historic tree and branch approach.
VDSL2 increases the bandwidth of existing copper lines, but can result in poor performance due to cross talk. BDR has resolved these distance sensitivity and cross talk problems.
Fiber and wireless based alternatives for telcos may involve no longer utilizing existing copper telephone lines, unlike BDR.
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