DOCSIS


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DOCSIS

DOCSIS

(Data Over Cable Service Interface Specification) A cable modem standard from the CableLabs research consortium (www.cablelabs.com), which provides equipment certification for interoperability. DOCSIS supports IP traffic (Internet traffic) over digital cable TV channels, and most cable modems are DOCSIS compliant.

Originally formed by four major cable operators and managed by Multimedia Cable Network System, management of the project was later turned over to CableLabs.

DOCSIS 1.x, 2.0 and 3.0
The first versions of DOCSIS (1.0, 1.1 and 2.0) provided a maximum downstream speed of approximately 40 Mbps with upstream speeds of 10 Mbps for Versions 1.x and 30 Mbps for DOCSIS 2.0. Introduced in 2006, DOCSIS 3.0 added channel bonding. The minimum number of channels that are coupled is four, providing maximum downstream/upstream speeds of 160/120 Mbps. In practice, all this bandwidth is shared among neighboring subscribers. See cable modem, EuroDOCSIS, eDOCSIS, CMTS and S-CDMA.
References in periodicals archive ?
Support for the 8x4 bonding configuration is available as an option in new DOCSIS Xpert systems and may also be added on to existing systems by purchasing additional software and hardware modules.
TI anticipates that by 2009 cable operators will stop deploying earlier generations of DOCSIS specification-based products and only offer their subscribers DOCSIS 3.
Integrated CMTS & Video QAM - DOCSIS traffic and MPEG/DVB video traffic can be carried over the same platform
Maryam Aghamirzadeh, President and CEO of Verecomm, states, "With millions of subscribers already using data-over-cable for Internet access, our CableAVS for DOCSIS solution is a direct response to demand for data-over-cable communications products and services.
Outside of North America, much of the interest in DOCSIS 3.
The test option really hits a sweet spot," added Fawaz, who is also a member of the DOCSIS Business Team.
Blonder Tongue President, Bob Palle stated, "The new DOCSIS based CMTS rounds out the Blonder Tongue data product line as it provides an extremely affordable solution for any operator wanting to deploy a standard DOCSIS CMTS product.
The CableLabs-developed software provides an accurate analysis of DOCSIS network usage based on information provided about the configuration and performance of DOCSIS network elements, as well as network traffic patterns associated with various services.
Mule now is responsible for steering the directions of IP technologies and protocol developments across the CableLabs research and development projects such as PacketCable, DOCSIS, and CableHome.
DOCSIS over satellite deployment has also started through high profile contracts in the Middle East and North America.