| Fifth-generation transmission systems for interactive cable television services - IP cable modems |
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Recommendation ITU-T J.224 defines the fifth generation of high-speed data-over-cable systems. The fifth-generation transmission systems introduce a number of new features that build upon what was present in previous ITU-T Recommendations namely ITU-T J.112, ITU-T J.122, ITU-T J.222.x-series, and ITU-T J.223.x-series. This Recommendation includes key new features for the physical (PHY) layer and defines full duplex data over cable service interface Specification (DOCSIS) mode of operation, including enhancements to the media access control (MAC) layer protocols as well as requirements for upper layer protocols such as Internet protocol (IP), dynamic host configuration protocol (DHCP), etc. The fifth-generation cable modem specifications fully incorporate the fourth generation specifications.
NOTE – The structure and content of this Recommendation have been organized for ease of use through direct reference to the original source material, based on the recognition of CableLabs by ITU as an A.5 organization (https://www.itu.int/en/ITU-T/extcoop/Pages/sdo.aspx). |
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| Citation: |
https://handle.itu.int/11.1002/1000/13970 |
| Series title: |
J series: Cable networks and transmission of television, sound programme and other multimedia signals
J.210-J.229: Interactive systems for digital television distribution (DOCSIS third to fifth generations) |
| Approval date: |
2019-07-29 |
| Provisional name: | J.5GDOCSIS |
| Approval process: | AAP |
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Status: |
Superseded |
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Maintenance responsibility: |
ITU-T Study Group 21 |
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Further details: |
Patent statement(s)
Development history
[7 related work items in progress]
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ITU-T Supplement
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Title
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Status
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Summary
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Table of contents
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Download
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J Suppl. 1 (11/1998)
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Example of linking options between annexes of ITU-T Recommendation J.112 and annexes of ITU-T Recommendation J.83
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In force
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-
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here
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here
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J Suppl. 2 (11/1998)
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Guidelines for the implementation of annex A of Recommendation J.112, "Transmission systems for interactive cable television services" – Example of digital video broadcasting (DVB) interaction channel for cable television distribution
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In force
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-
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here
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here
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J Suppl. 3 (11/1998)
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Guidelines for the implementation of Recommendation J.111 "Network independent protocols" – Example of digital video broadcasting (DVB) systems for interactive services
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In force
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-
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here
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here
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J Suppl. 5 (09/1999)
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Guidelines on the use of some ITU-T Recommendations in the J series
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In force
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here
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here
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here
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J Suppl. 6 (09/2016)
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Ultra high definition television cable transmission with functions defined in Recommendations ITU-T J.183, ITU-T J.288 and ITU-T J.94
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In force
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here
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here
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here
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J Suppl. 7 (04/2021)
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Embedded common interface (ECI) for exchangeable CA/DRM solutions; Guidelines for the implementation of ECI
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In force
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here
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here
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here
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J Suppl. 8 (04/2021)
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Embedded common interface (ECI) for exchangeable CA/DRM solutions; Trust environment
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In force
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here
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here
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here
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J Suppl. 9 (04/2020)
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Embedded common interface for exchangeable CA/DRM solutions; System validation
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In force
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here
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here
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here
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J Suppl. 10 (09/2024)
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Correspondence between CableLabs DOCSIS Specifications and ITU-T J-series Recommendations
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In force
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here
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here
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here
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J Suppl. 11 (10/2025)
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Guidelines for installing a digital television service for cable networks based on ITU-T Recommendations
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In force
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here
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here
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here
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J Suppl. 14 (01/2025)
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Use cases of microservices architecture for audiovisual media in the converged media cloud
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In force
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here
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here
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here
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| Title |
Approved on |
Download |
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Analysis and related solutions for full duplex interference
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2020
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here
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