CableLabs® Completes DOCSIS™ 2.0 Specs, Enabling More Advanced Modems
"CableLabs' work in the cable modem arena has added immense value to the cable industry's broadband business and to the industry's consumer offerings," said Mark Coblitz, Senior Vice President of Strategic Planning for Comcast Corporation. "The modem effort has reinforced cable's role as the leader in broadband service deployment," he added.
"Once again our DOCSIS team, under Rouzbeh Yassini, has met another difficult milestone, allowing cable operators to continue advancing their customer service offerings," said CableLabs President and CEO Dr. Richard R. Green. "I am very proud of this team and its achievements."
Yassini added: "Silicon and product suppliers already are hard at work with CableLabs to develop necessary automated test execution packages and test equipment that will be used to perform interoperability, certification, and qualification of the products." Yassini is executive consultant to CableLabs and is CEO of YAS Broadband Ventures.
DOCSIS 2.0 builds upon the capabilities of DOCSIS 1.0 and DOCSIS 1.1 and adds throughput in the upstream portion of the cable plant—from the consumer out to the Internet—creating a network that has 27 megabit per second (Mbps) capacity in two directions. That tripling of data capacity enables services such as videoconferencing and peer-to-peer applications. DOCSIS stands for Data over Cable Service Interface Specification.
DOCSIS 2.0 enables operators to create new services for both home and business use, including symmetrical and critical applications. The specification enhancements are also geared towards providing an even more robust communications channel than was available with the current versions of the DOCSIS Specification, which provides additional functionality and support for lifeline services.
Cable operators and some suppliers have been working on DOCSIS 2.0 since late 1998. Specifically, DOCSIS 2.0 will include two modulation techniques: S-CDMA (synchronous code division multiple access) and A-TDMA (advanced frequency agile time division multiple access).
In addition to more upstream channel capacity, DOCSIS 2.0 will be compatible with DOCSIS 1.0 and 1.1 cable modems (CMs) and cable modem termination systems (CMTSs), will increase protection against electronic impairments that occur in cable systems, and will further enhance and augment the international DOCSIS standard (ITU J-112), which has been adopted world-wide and provides international interoperability of data signals.
About CableLabs: Cable Television Laboratories (www.cablelabs.com) was founded in 1988 by members of the cable television industry. A non-profit research and development consortium, CableLabs delivers innovations that enable cable operators to be the providers of choice in their markets. Cable operators from around the world are members. CableLabs maintains web sites at www.cablelabs.com; www.packetcable.com; www.cablemodem.com; www.cablenet.org, and www.opencable.com.
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