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ITU-T J.112 Annex B (03/2001)

Data-over-cable service interface specifications: Radio-frequency interface specification

This annex defines the radio-frequency interface specifications for high-speed data-over-cable systems.Two options for physical layer technology are included. One option is based on the downstream multi-programme television distribution that is deployed in North America using 6 MHz channelling, and supports upstream transmission in the region 5 MHz to 42 MHz. The other one is based on the corresponding European multi-programme television distribution and supports upstream in the region 5 MHz to 65 MHz.

Citation:	https://handle.itu.int/11.1002/1000/5481
Series title:	J series: Cable networks and transmission of television, sound programme and other multimedia signals J.110-J.129: Interactive systems for digital television distribution (DOCSIS first and second generations)
Approval date:	2001-03-09
Provisional name:	J.isc
Approval process:	TAP
Status:	Superseded
Observation:	Superseded by J.112 Annex B (03/2004)
Maintenance responsibility:	ITU-T Study Group 21
Further details:	Patent statement(s) Development history

Ed.	ITU-T Recommendation	Status	Summary	Table of Contents	Download
1.5	J.112 Annex B (03/2004)	In force	here	here	here
1.4	J.112 Annex C (02/2002)	In force	here	here	here
1.3	J.112 Annex B (2001) Amd. 1 (02/2002)	Superseded	-	-	here
1.2	J.112 Annex B (03/2001)	Superseded	here	here	here
1.1	J.112 Annex A (03/2001)	In force	here	here	here
1	J.112 (03/1998)	In force	here	here	here


ITU-T Supplement	Title	Status	Summary	Table of contents	Download
J Suppl. 1 (11/1998)	Example of linking options between annexes of ITU-T Recommendation J.112 and annexes of ITU-T Recommendation J.83	In force	-	here	here
J Suppl. 2 (11/1998)	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	In force	-	here	here
J Suppl. 3 (11/1998)	Guidelines for the implementation of Recommendation J.111 "Network independent protocols" – Example of digital video broadcasting (DVB) systems for interactive services	In force	-	here	here
J Suppl. 5 (09/1999)	Guidelines on the use of some ITU-T Recommendations in the J series	In force	here	here	here
J Suppl. 6 (09/2016)	Ultra high definition television cable transmission with functions defined in Recommendations ITU-T J.183, ITU-T J.288 and ITU-T J.94	In force	here	here	here
J Suppl. 7 (04/2021)	Embedded common interface (ECI) for exchangeable CA/DRM solutions; Guidelines for the implementation of ECI	In force	here	here	here
J Suppl. 8 (04/2021)	Embedded common interface (ECI) for exchangeable CA/DRM solutions; Trust environment	In force	here	here	here
J Suppl. 9 (04/2020)	Embedded common interface for exchangeable CA/DRM solutions; System validation	In force	here	here	here
J Suppl. 10 (09/2024)	Correspondence between CableLabs DOCSIS Specifications and ITU-T J-series Recommendations	In force	here	here	here
J Suppl. 11 (10/2025)	Guidelines for installing a digital television service for cable networks based on ITU-T Recommendations	In force	here	here	here
J Suppl. 14 (01/2025)	Use cases of microservices architecture for audiovisual media in the converged media cloud	In force	here	here	here

Title	Approved on	Download
Implementers' Guide for Recommendation ITU-T J.112 Annex B (03/01)	2003-04-01	here

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ITU-T J.112 Annex B (03/2001)