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(Data Over Cable Service Interface Specification) A cable modem standard from the CableLabs research consortium (, which provides equipment certification for interoperability. DOCSIS supports IP traffic (Internet traffic) over digital cable TV channels, and current cable modems are DOCSIS compliant. In 2006, DOCSIS 3.0 added the capability of bonding from four to 32 upstream channels and from four to eight downstream. All bandwidth is shared among neighboring subscribers.

Originally formed by four major cable operators and managed by Multimedia Cable Network System, management of the project was later turned over to CableLabs. See cable modem, EuroDOCSIS, eDOCSIS, CMTS and S-CDMA.

DOCSIS                 SpeedVersion  Year     Down       Up

   1.0    1997   40 Mbps    10 Mbps
   1.1    2001   40 Mbps    10 Mbps
   2.0    2002   40 Mbps    30 Mbps
   3.0    2006   1.2 Gbps  200 Mbps
   3.1    2016   10 Gbps    10 Gbps

Down/Up Discrepancy
In order to prevent a residential customer from supplying content on a website to the general public or providing some other business data service, ISPs often keep upstream (upload) speeds much lower than down. This is a home network cable Internet speed test from Ookla, a company that provides Internet metrics.
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References in periodicals archive ?
"Our DP-1000 DOCSIS Protocol Analyzer was a perfect fit for these requirements.
As the largest cable TV and Internet service provider in Kerala, India, Asianet has plans to fast-track the deployment of DOCSIS 3.0 modems to deliver an impressive Internet surfing experience to its 200,000 subscribers.
"Our new HD DOCSIS 2.0 set-top box chipset enables cable operators to leverage their broadband network to deploy higher revenue-generating two-way HD services that compete effectively with satellite and IPTV video providers," said John Gleiter, Broadcom Vice President of Cable Broadband, Broadband Communications Group.
The SMCD3GN Gateway is a widely-deployed DOCSIS 3.0 gateway providing 802.11n wireless connectivity to wideband Internet services.
In the upstream direction, there is even more difference between FTTH and DOCSIS. FTTH can transport at least 1 Gb/s upstream from 32 subscribers.
The dynamic CVD31XT Cable eMTA is future-proof with Internet Protocol version 6 (IPv6) and is also backwards compatible with DOCSIS 2.0, DOCSIS 1.1 and DOCSIS 1.0.
"DOCSIS 2.0 is a substantial upgrade for MSOs and will give them the tools to offer enhanced voice, video and data services on a single platform," said Hilton Nicholson, president of the IP Cable Business Unit for ADC.
The demonstration also utilized the Intel[R] Puma 7 DOCSIS 3.1 SoC.
Anticipating a change in user demand as emerging technologies require more bandwidth, CableLabs' Full Duplex DOCSIS technology will ensure that cable operators can be ready to meet future usage needs for technologies such as virtual and augmented reality.
is bringing DOCSIS Internet solutions to major hotel brands, saving them the cost of re-wiring and construction on guest rooms, the company said.