1、 International Telecommunication Union ITU-T J.126TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (12/2007) SERIES J: CABLE NETWORKS AND TRANSMISSION OF TELEVISION, SOUND PROGRAMME AND OTHER MULTIMEDIA SIGNALS Interactive systems for digital television distribution Embedded Cable Modem device specif
2、ication ITU-T Recommendation J.126 ITU-T Rec. J.126 (12/2007) i ITU-T Recommendation J.126 Embedded Cable Modem device specification Summary ITU-T Recommendation J.126 defines additional features that must be added to a Cable Modem for implementations that embed the Cable Modem with another applicat
3、ion, such as an IPCablecom multimedia terminal adapter (MTA). Source ITU-T Recommendation J.126 was approved on 14 December 2007 by ITU-T Study Group 9 (2005-2008) under the ITU-T Recommendation A.8 procedure. History Edition Approval 1.0 J.126 2004-04-22 2.0 J.126 2007-12-14 ii ITU-T Rec. J.126 (12
4、/2007) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible f
5、or studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T stu
6、dy groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis
7、 with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory p
8、rovisions (to ensure e.g. interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of
9、 such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no pos
10、ition concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, prot
11、ected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2008 All rights reserved. No part
12、of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. J.126 (12/2007) iii CONTENTS Page 1 Scope 1 2 References. 1 2.1 Normative references 1 2.2 Informative references 2 3 Definitions 3 4 Abbreviations and conventions. 4 4.1 Abbreviat
13、ions . 4 4.2 Conventions 6 5 Embedded cable modem. 6 5.1 Device interface reference model. 6 5.2 eDOCSIS requirements 14 Annex A SLED MIB definition 39 Annex B eSAFE MIB Definition 44 Annex C Format and content for eCM/eSTB event, SYSLOG, and SNMP trap extensions . 55 ITU-T Rec. J.126 (12/2007) 1 IT
14、U-T Recommendation J.126 Embedded Cable Modem device specification 1 Scope This Recommendation defines additional features that must be added to a Cable Modem for implementations that embed the Cable Modem with another application, such as an IPCablecom MTA. NOTE The structure and content of this Re
15、commendation have been organized for ease of use by those familiar with the original source material; as such, the usual style of ITU-T Recommendations has not been applied. 2 References 2.1 Normative references The following ITU-T Recommendations and other references contain provisions which, throu
16、gh reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying t
17、he most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. BB ITU-T Re
18、commendation J.199 (2006), Battery backup for cable-based devices. BPI+ ITU-T Recommendation J.125 (2004), Link privacy for cable modem implementations. DOCSIS0-OSSI ANSI/SCTE 22-3 2002, Data-Over-Cable Service Interface Specification DOCSIS 1.0 Part 3: Operations Support System Interface (OSSI). DO
19、CSIS0-RFI ANSI/SCTE 22-1 2002, Data-Over-Cable Service Interface Specification DOCSIS 1.0 Radio Frequency Interface (RFI). DOCSIS1-OSSI ANSI/SCTE 23-3 2005, DOCSIS 1.1 Part 3: Operations Support System Interface. DOCSIS1-RFI ITU-T Recommendation J.112 Annex B (2004), Data-over-cable service interfac
20、e specifications: Radio-frequency interface specification. DOCSIS2-OSSI ANSI/SCTE 79-2 2002, DOCS 2.0 Operations Support System Interface. DOCSIS2-RFI ITU-T Recommendation J.122 (2007), Second-generation transmission systems for interactive cable television services IP cable modems. DOCSIS3-MULPI IT
21、U-T Recommendation J.222.2 (2007), Third-generation transmission systems for interactive cable television services IP cable modems: MAC and upper layer protocols. DOCSIS3-OSSI ANSI/SCTE 135-4 2007, DOCSIS 3.0 Operations Support System Interface. DOCSIS-OSSI Refers to DOCSIS1-OSSI, DOCSIS2-OSSI and D
22、OCSIS3-OSSI. DOCSIS-RFI/MULPI Refers to DOCSIS1-RFI, DOCSIS2-RFI and DOCSIS3-MULPI. 2 ITU-T Rec. J.126 (12/2007) DSG ITU-T Recommendation J.128 (2005), Set-top gateway specification for transmission systems for interactive cable television services. eRouter ITU-T Recommendation J.218 (2007), Cable m
23、odem IPv4 and IPv6 eRouter specification. IETF RFC 768 IETF RFC 768 (1980), User Datagram Protocol. IETF RFC 791 IETF RFC 791 (1981), Internet Protocol DARPA Internet Program Protocol Specification. IETF RFC 1493 IETF RFC 1493 (1993), Definitions of Managed Objects for Bridges. IETF RFC 2011 IETF RF
24、C 2011 (1996), SNMPv2 Management Information Base for the Internet Protocol using SMIv2. IETF RFC 2131 IETF RFC 2131 (1997), Dynamic Host Configuration Protocol. IETF RFC 2132 IETF RFC 2132 (1997), DHCP Options and BOOTP Vendor Extensions. IETF RFC 2863 IETF RFC 2863 (2000), The Interfaces Group MIB
25、. IETF RFC 3396 IETF RFC 3396 (2002), Encoding Long Options in the Dynamic Host Configuration Protocol (DHCPv4). IETF RFC 3418 IETF RFC 3418 (2002), Management Information Base (MIB) for the Simple Network Management Protocol (SNMP). IETF RFC 4293 IETF RFC 4293 (2006), Management Information Base fo
26、r the Internet Protocol (IP). 2.2 Informative references CableHome CableLabs (http:/ CANN-DHCP CableLabs DHCP Options Registry, CL-SP-CANN-DHCP-Reg-I01-070119, January 19, 2007, Cable Television Laboratories, Inc. CCIF 2.0 CableCARDTMInterface 2.0 Specification, OC-SP-CCIF2.0-I09-070105, January 5,
27、2007, Cable Television Laboratories, Inc. CH10 ITU-T Recommendation J.191 (2004), IP feature package to enhance cable modems. CH11 ITU-T Recommendation J.192 (2004), A residential gateway to support the delivery of cable data services. DOCSIS CableLabs (http:/ HOST2.0 OpenCable Host Device 2.0 Core
28、Functional Requirements, OC-SP-HOST2.0-CFR-I14-070615, June 15, 2007, Cable Television Laboratories, Inc. IETF RFC 2578 IETF RFC 2578 (1999), Structure of Management Information Version 2 (SMIv2). PacketCable CableLabs (http:/ PC10-MTA ITU-T Recommendation J.167 (2001), Media terminal adapter (MTA)
29、device provisioning requirements for the delivery of real-time services over cable television networks using cable modems. PC10-MIB ITU-T Recommendation J.166 (2001), IPCablecom Management Information Base (MIB) framework. ITU-T Rec. J.126 (12/2007) 3 TEI ITU-T Recommendation J.214 (2007), Cable mod
30、em TDM emulation interface. 3 Definitions This Recommendation defines the following terms: 3.1 CableHome: This is a Cable Television Laboratories, Inc. (“CableLabs“) specification (see http:/ for the interfaces necessary to extend high-quality cable-based services to network devices within the home.
31、 The CableHome project addresses issues such as device interoperability, QoS (Quality of Service), and network management. This term is also used for a system or device that is compliant with the CableHome specifications CH10 or CH11. 3.2 DOCSIS: The term for a system or device compliant with any on
32、e of the Cable Television Laboratories, Inc. (“CableLabs“) series of specifications located at: http:/ 3.3 CableModem base specifications: There are currently four versions of what are in this Recommendation referred to as the CableModem Base Specifications. The original CableModem is specified in S
33、CTE 22-1 2002: DOCSIS 1.0 Radio Frequency Interface and SCTE 22-3. SCTE 22-1 is J.112 (1998) with some corrections and minor additions. The second specification is J.112 with SCTE 23-3, the third specification is J.122 with SCTE 79-2, and the fourth specification is J.222. 3.4 eCM: An eCM is an embe
34、dded Cable Modem, i.e., one that has been enhanced with the features of this Recommendation. 3.5 eDOCSIS: eDOCSIS is a CableLabs specification that defines the interface between the eCM and an eSAFE. The international version of the specification is this Recommendation. 3.6 eDOCSIS device: An eDOCSI
35、S device is one that includes an eCM entity, one or more eSAFEs and supports a single software image using a CableModem secured software download mechanism. 3.7 embedded multimedia terminal adapter (eMTA): An embedded version of an MTA. 3.8 embedded MTA device (e-MTA): An eDOCSIS device that contain
36、s both an eMTA and an eCM. 3.9 embedded portal service element (ePS): An IPCable2Home-compliant eSAFE that provides management and network address translation functions between the cable data network and the home network. 3.10 logical CPE interface: A bidirectional, data-only 802.3/Ethernet MAC fram
37、e interface between eCM and an eSAFE. 3.11 multimedia terminal adapter (MTA): An IPCablecom device that contains the interface to a physical voice device, a network interface, CODECs, and all signalling and encapsulation functions required for VoIP transport, class features signalling and QoS signal
38、ling. 3.12 embedded service/application functional entity (eSAFE): An embedded version of a specified application, such as an IPCablecom multimedia terminal adapter (MTA), that provides a service using the CableModem IP platform, or a function or set of functions, such as the IPCable2Home Portal Ser
39、vice logical element, that supports the delivery of one or more services over an IP platform. 3.13 PacketCable: PacketCable is a CableLabs specification located at: http:/ The PacketCable specifications are interoperable interface specifications for delivering advanced, real-time multimedia services
40、 over a two-way cable plant. Built on top of the industrys highly successful cable modem infrastructure, 4 ITU-T Rec. J.126 (12/2007) PacketCable networks uses Internet Protocol (IP) technology to enable a wide range of multimedia services, such as IP telephony, multimedia conferencing, interactive
41、gaming, and general multimedia applications. This term is also applicable to a system or device that is compliant to the PacketCable specifications. The international version of PacketCable is standardized in ITU-T J-series Recommendations J.160 to J.179. 3.14 point of deployment (POD) module: A rem
42、ovable conditional access module which, when inserted into certain eSTB implementations, enables delivery of digital video programming and other services. POD module functionality includes copy protection and signal demodulation. The interface between the POD module and the eSTB is specified by CCIF
43、 2.0. 3.15 eRouter: DOCSIS Embedded Router. An eSAFE that is compliant with eRouter, providing version 4 and/or version 6 Internet Protocol-formatted data forwarding, address configuration, and Domain Name services to Internet Protocol host devices connected to the cable modem in a customers premise
44、s. 3.16 embedded set-top box (eSTB): An eSAFE that is compliant with DSG, providing video, audio and data services. An example OpenCable-compliant eSTB is further specified in HOST2.0. 3.17 embedded TDM emulator adapter (eTEA): An eSAFE that is compliant with TEI, providing T1 and E1 Circuit transpo
45、rt over IP. 3.18 monolithic firmware image: A single firmware image containing one or more code images for the entire eDOCSIS device. For eDOCSIS devices, the Monolithic Firmware Image contains both the eCM code image as well as the applicable eSAFE code image. As an example for an eDOCSIS device co
46、ntaining an eSTB, the Monolithic Firmware Image contains the eCM code image as well as the eSTB code image (which may also be composed of multiple eSTB code images). 3.19 network virtual terminal (NVT): As defined in the Telnet Protocol. NVT was a bidirectional character device, representing charact
47、ers as 7-bit ASCII codes, using an 8-bit field. 3.20 OpenCable host eSTB: An eSTB device built to CableLabs OpenCable Host specifications. 3.21 embedded security eSTB: An eSTB with integrated security functions. 3.22 secure microprocessor: The security element in a device that supports downloadable
48、conditional access. 3.23 set-top device: An eDOCSIS device that contains an eSTB. 3.24 time division multiplexing (TDM): The means by which multiple digital signals can be carried on a single transmission path by interleaving portions of each signal in time. 4 Abbreviations and conventions 4.1 Abbreviations This Recommendation uses the following abbreviations: ASCII American Standard Code for Information Interchange BSoD Business Services over DOCSIS CATV Community Access Television, Cable Television CM Cable Modem CMCI Cable Modem
