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ITU-T J.112 Annex B (03/2004)

有线电缆数据业务接口规范：射频接口规范

附件B定义对于高速电缆传输数据系统的射频接口规范。有两个选项可用于物理层技术，具有相等的优先级，并且不要求是可互操作的。其中一种技术选项是基于下行多节目电视分配，使用6 MHz频道部署，并支持5-42 MHz区域的上行传输。第二种技术选项是基于一个多节目电视分配，使用8 MHz频道间隔，并支持5-65 MHz区域的上行。这两种方法都具有平等的地位。第B.4、第B.6和第B.7节中对这些选项中的第一个进行了定义，而第二个通过替换将这些条款的内容和附件B.N中的内容进行定义的。删除了原附件B/J.112的附件B.O“隐私电缆调制解调器实施的隐私”，因为它成为独立的ITU-T J.125建议书。

Citation:	https://handle.itu.int/11.1002/1000/7193
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:	2004-03-15
Provisional name:	J.isc
Approval process:	AAP
Status:	In force
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1.3	J.112 Annex B (2001) Amd. 1 (02/2002)	Superseded	-	-	here
1.2	J.112 Annex B (03/2001)	Superseded	here	here	here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 (03/2004)