10PASS-TS
Encyclopedia
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 (2,460.6 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).
s that provide a single rate such as 10, 100 or 1000 Mbit/s, 10PASS-TS link rate can vary, 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 distance.
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 MDU
buildings. However, VDSL2 has already proven to be a versatile and faster standard with greater reach than VDSL.
PHY
PHY is an abbreviation for the physical layer of the OSI model.An instantiation of PHY connects a link layer device to a physical medium such as an optical fiber or copper cable. A PHY device typically includes a Physical Coding Sublayer and a Physical Medium Dependent layer. The PCS encodes and...
) specification for a full-duplex short reach point-to-point Ethernet
Ethernet
Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....
link over voice-grade copper wiring, used in Ethernet in the first mile
Ethernet in the first mile
Ethernet in the first mile refers to using one of the Ethernet family of computer network protocols between a telecommunications company and a customer's premise. From the customer's point of view it is their "first" mile, although from the access networks' point of view it is known as the "last...
applications.
10PASS-TS PHYs deliver a minimum of 10 Mbit/s over distances of up to 750 metres (2,460.6 ft), using ITU-T
ITU-T
The ITU Telecommunication Standardization Sector is one of the three sectors of the International Telecommunication Union ; it coordinates standards for telecommunications....
G.993.1
ITU G.993.1
ITU G.993.1 is an ITU standard for DSL that defines VDSL.-External links:***...
(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
PME Aggregation Function
PME Aggregation Function is a mechanism defined in Clause 61 of IEEE 802.3, which allows one or more Physical Medium Entities to be combined together to form asingle logical Ethernet link....
(PAF).
Details
Unlike other Ethernet physical layerEthernet physical layer
The Ethernet physical layer is the physical layer component of the Ethernet family of computer network standards.The Ethernet physical layer evolved over a considerable time span and encompasses quite a few physical media interfaces and several magnitudes of speed...
s that provide a single rate such as 10, 100 or 1000 Mbit/s, 10PASS-TS link rate can vary, depending on the copper channel characteristics, such as length, wire diameter (gauge
American wire gauge
American wire gauge , also known as the Brown & Sharpe wire gauge, is a standardized wire gauge system used since 1857 predominantly in the United States and Canada for the diameters of round, solid, nonferrous, electrically conducting wire...
), 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
Twisted pair
Twisted pair cabling is a type of wiring in which two conductors are twisted together for the purposes of canceling out electromagnetic interference from external sources; for instance, electromagnetic radiation from unshielded twisted pair cables, and crosstalk between neighboring pairs...
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
Backhaul (telecommunications)
In a hierarchical telecommunications network the backhaul portion of the network comprises the intermediate links between the core network, or backbone, of the network and the small subnetworks at the "edge" of the entire hierarchical network...
to connect with a carrier network over greater distance.
VDSL Ethernet in the first mile
Ethernet in the first mile
Ethernet in the first mile refers to using one of the Ethernet family of computer network protocols between a telecommunications company and a customer's premise. From the customer's point of view it is their "first" mile, although from the access networks' point of view it is known as the "last...
services using may be a useful way to standardise functionality on Metro Ethernet
Metro Ethernet
A Metro Ethernet is a computer network that covers a metropolitan area and that is based on the Ethernet standard. It is commonly used as a metropolitan access network to connect subscribers and businesses to a larger service network or the Internet...
networks, or potentially to distribute internet access services over voice-grade wiring in MDU
MDU
MDU may refer to:* Mains Distribution Unit* Maharishi Dayanand University* Manchester Debating Union* Medical Defence Union* MDU Resources, a U.S. diversified energy company* Multi-dwelling unit, a classification of housing...
buildings. However, VDSL2 has already proven to be a versatile and faster standard with greater reach than VDSL.
See also
- Ethernet in the First MileEthernet in the First MileEthernet in the first mile refers to using one of the Ethernet family of computer network protocols between a telecommunications company and a customer's premise. From the customer's point of view it is their "first" mile, although from the access networks' point of view it is known as the "last...
- PME Aggregation FunctionPME Aggregation FunctionPME Aggregation Function is a mechanism defined in Clause 61 of IEEE 802.3, which allows one or more Physical Medium Entities to be combined together to form asingle logical Ethernet link....
- 2BASE-TL2BASE-TL2BASE-TL is an IEEE 802.3-2008 Physical Layer specification for a full-duplex long reach point-to-point Ethernet link over voice-grade copper wiring...
- ITU G.993.2 VDSL2
- Passive Optical NetworkPassive optical networkA passive optical network is a point-to-multipoint, fiber to the premises network architecture in which unpowered optical splitters are used to enable a single optical fiber to serve multiple premises, typically 16-128. A PON consists of an optical line terminal at the service provider's central...
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 Chip Vendors
- Broadcom (http://www.broadcom.com)
- Lantiq (http://www.lantiq.com)
- Ikanos (http://www.ikanos.com)
- Metanoia (http://www.metanoia.com.tw)