10PASS-TS

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It has been suggested that this article or section be merged into Ethernet in the first mile . (Discuss) Proposed since June 2011.

10PASS-TS is an IEEE 802.3-2008 Physical Layer (PHY) specification for a full-duplex short reach point-to-point Ethernet link over voice-grade copper wiring, used in Ethernet in the first mile applications.

10PASS-TS PHYs deliver a minimum of 10 Mbit/s over distances of up to 750 metres (2,460 ft), using ITU-T G.993.1 (VDSL) technology over a single copper pair. These PHYs may also support an optional aggregation or bonding of multiple copper pairs, called PME Aggregation Function (PAF).

Details

Unlike other Ethernet physical layers that provide a single rate such as 10, 100 or 1000 Mbit/s, 10PASS-TS link rate can vary, , similar to 2BASE-TL, depending on the copper channel characteristics, such as length, wire diameter (gauge), wiring quality, the number of pairs if the link is aggregated and other factors.

VDSL is a short range technology designed to provide broadband over distances less than 1km of voice-grade copper twisted pair line, but connection data rates deteriorate quickly as the line distance increases. This has led to VDSL being referred to as a "Fibre to the curb" technology, because it requires fibre backhaul to connect with a carrier network over greater distances.

VDSL Ethernet in the first mile services using may be a useful way to standardise functionality on Metro Ethernet networks, or potentially to distribute internet access services over voice-grade wiring in multi-dwelling unit buildings. However, VDSL2 has already proven to be a versatile and faster standard with greater reach than VDSL.

See also

• Ethernet in the First Mile
• PME Aggregation Function
• 2BASE-TL
• ITU G.993.2 VDSL2
• Passive Optical Network

External links

• Get IEEE 802.3 - "IEEE Standard for Information technology - Telecommunications and information exchange between systems - Local and metropolitan area networks - Specific requirements - Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications", IEEE Std 802.3-2008, November 2008.
• IEEE 802.3ah - Ethernet in the First Mile Task Force archive

10PASS-TS Equipment Manufacturers

• Extreme Copper, Inc. (http://www.extremecopper.com)

10PASS-TS Chip Vendors

• Broadcom (http://www.broadcom.com)
• Lantiq (http://www.lantiq.com)
• Ikanos (http://www.ikanos.com)
• Metanoia (http://www.metanoia.com.tw)

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