ITU-T Y.1703-2003 Architecture and specification of data communication network

pdf标准 ITU-T Y.1703-2003 Architecture and specification of data communication network

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INTERNATIONAL TELECOMMUNICATION UNION ITU-T G.7712/Y.1703 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (03/2003) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Operations, administration and maintenance features of transmission equipment SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE AND INTERNET PROTOCOL ASPECTS Internet protocol aspects – Operation, administration and maintenance Architecture and specification of data communication network ITU-T Recommendation G.7712/Y.1703 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIERTRANSMISSION SYSTEMS INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TESTING EQUIPMENTS TRANSMISSION MEDIA CHARACTERISTICS DIGITAL TERMINAL EQUIPMENTS DIGITAL NETWORKS DIGITAL SECTIONS AND DIGITAL LINE SYSTEM QUALITY OF SERVICE AND PERFORMANCE TRANSMISSION MEDIA CHARACTERISTICS DIGITAL TERMINAL EQUIPMENTS General Coding of analogue signals by pulse code modulation Coding of analogue signals by methods other than PCM Principal characteristics of primary multiplex equipment Principal characteristics of second order multiplex equipment Principal characteristics of higher order multiplex equipment Principal characteristics of transcoder and digital multiplication equipment Operations, administration and maintenance features of transmission equipment Principal characteristics of multiplexing equipment for the synchronous digital hierarchy Other terminal equipment DIGITAL NETWORKS For further details, please refer to the list of ITU-T Recommendations. G.100–G.199 G.200–G.299 G.300–G.399 G.400–G.449 G.450–G.499 G.500–G.599 G.600–G.699 G.700–G.799 G.800–G.899 G.900–G.999 G.1000–G.1999 G.6000–G.6999 G.7000–G.7999 G.7000–G.7099 G.7100–G.7199 G.7200–G.7299 G.7300–G.7399 G.7400–G.7499 G.7500–G.7599 G.7600–G.7699 G.7700–G.7799 G.7800–G.7899 G.7900–G.7999 G.8000–G.8999 ITU-T Recommendation G.7712/Y.1703 Architecture and specification of data communication network Summary This Recommendation defines the architecture requirements for a Data Communication Network (DCN) which may support distributed management communications related to the Telecommunication Management Network (TMN), distributed signalling communications related to the Automatic Switched Transport Network (ASTN), and other distributed communications (e.g., Orderwire or Voice Communications, Software Download). The DCN architecture considers networks that are IP-only, OSI-only, and mixed (i.e., support both IP and OSI). The interworking between parts of the DCN supporting IP-only, parts supporting OSI-only, and parts supporting both IP and OSI are also specified. Various applications (e.g., TMN, ASTN, etc.) require a packet-based communications network to transport information between various components. For example, the TMN requires a communications network, which is referred to as the Management Communication Network (MCN) to transport management messages between TMN components (e.g., NEF component and OSF component). ASTN requires a communication network which is referred to as the Signalling Communication Network (SCN) to transport signalling messages between ASTN components (e.g., CC components). This Recommendation specifies data communication functions that can be used to support one or more application's communication network. The data communication functions provided in the 11/2001 version of this Recommendation support connection-less network services. This revision of the Recommendation adds the support of connection-oriented network SCN services by including specific MPLS-based mechanism. This Recommendation forms part of a family of Recommendations covering transport networks. Source ITU-T Recommendation G.7712/Y.1703 was revised by ITU-T Study Group 15 (2001-2004) and approved under the WTSA Resolution 1 procedure on 16 March 2003. Document history Issue Notes 1.0 Output of Q14/15 October 2001 meeting 1.1 Output of Q14/15 April 2002 meeting 1.2 Cleanup of 1.1 1.3 Output of Q14/15 October 2002 meeting 1.4 Cleanup of version 1.3: Replace section headings 7.1.a, etc. with 7.1.13, etc., Remove editor comments 1.5 Output from the Q14/15 meeting and submitted for consent Keywords Data Communication Network, Internet Protocol (IP), Open System Interface (OSI). ITU-T Rec. G.7712/Y.1703 (03/2003) i FOREWORD The International Telecommunication Union (ITU) is the United Nations specialize

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