1、 AMERICAN NATIONAL STANDARD FOR TELECOMMUNICATIONS ATIS-1000644.1995(R2015) Broadband ISDN Meta-Signalling Protocol As a leading technology and solutions development organization, ATIS brings together the top global ICT companies to advance the industrys most-pressing business priorities. Through AT
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17、National Standard developed by the Signaling, Architecture and Control (SAC) Subcommittee under the ATIS Packet Technologies and Systems Committee (PTSC). Published by Alliance for Telecommunications Industry Solutions 1200 G Street, NW, Suite 500 Washington, DC 20005 Copyright 2015 by Alliance for
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19、onal StandardANSI T1.644-1995for telecommunications broadband ISDN meta-signalling protocolApproved January 3, 1995 Secretariat: Alliance for Telecommunications Industry SolutionsAn American National Standard implies a consensus of those substantially concerned with its scope and provisions. An Amer
20、icanNational Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of anAmerican National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufac-turing, marketing, purchasing, or using product
21、s, processes, or procedures not conforming to the standard. American NationalStandards are subject to periodic review and users are cautioned to obtain the latest editions.The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of anyA
22、merican National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American NationalStandard in the name of the American National Standards Institute.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures
23、 of the AmericanNational Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from thedate of approval. Purchasers of American National Standards may receive current information on all standards by calling or writingthe American Nat
24、ional Standards Institute.Copyright 1995 by Alliance for Telecommunications Industry Solutions, 1200 G Street, NW, Suite 500, Washington, DC 20005 ANSI 2.5C195/141 ScopeThis standard defines the B-ISDN meta-sig-nalling protocol (Version 1) that is used toestablish and maintain user-network signallin
25、gconnections that are applicable for multipointconfigurations at the SBor TBreference points.2 Normative referencesThe following standard contains provisionswhich, through reference in this text, consti-tute provisions of this American NationalStandard. At the time of publication, the edi-tion indic
26、ated was valid. All standards aresubject to revision, and parties to agreementsbased on this American National Standardare encouraged to investigate the possibilityof applying the most recent edition of thestandard indicated below.ITU-T Recommendation Q.2120, B-ISDNmeta-signalling protocol, 19941)3
27、DefinitionsThe following terminology is used within thisdocument.3.1 meta-signalling virtual channel: A vir-tual channel that is used to convey meta-sig-nalling messages across a UNI.4 Abbreviations and acronymsATM Asynchronous Transfer ModeBCD Binary Coded DecimalB-ISDN Broadband Integrated Service
28、sDigital NetworkBSVC Broadcast Signalling VirtualChannelBSVCI Broadcast Signalling VirtualChannel IdentifierCAU CausePage 1 of 2 pagesANSI T1.644-19951)Available from the American National Standards Institute, 11 West 42nd Street, New York, NY 10036.RI Reference IdentifierSAP Service Access PointSBV
29、CI Selective Broadcast Channel VirtualChannel IdentifierSCON Signalling ConfigurationSPID Service Profile IdentifierSVC Signalling Virtual ChannelSVCI Signalling Virtual Channel IdentifierSVCIA Signalling Virtual Channel Identifier ASVCIB Signalling Virtual Channel Identifier BUMSPE User Meta-signal
30、ling Protocol EntityVC Virtual ChannelVCI Virtual Channel IdentifierVP Virtual PathVPI Virtual Path Identifier5 RequirementsThe American National Standard for B-ISDNmeta-signalling protocol shall be the ITU-TRecommendation text for Q.2120, B-ISDNmeta-signalling protocol, 1994.CDV Cell Delay Variatio
31、nCLP Cell Loss PriorityCRC Cyclic Redundancy CheckGBSVC General Broadcast Signalling VirtualChannelGBSVCI General Broadcast Signalling VirtualChannel IdentifierLME Layer Management EntityMSPE Meta-signalling Protocol EntityMSVC Meta-signalling Virtual ChannelMSVCI Meta-signalling Virtual ChannelIdentifierMT Message TypeNMSPE Network Meta-signalling ProtocolEntityOAM Operations And MaintenancePCR PSVC Cell RatePD Protocol DiscriminatorPSVC Point-to-point Signalling VirtualChannel PSVCI Point-to-point Signalling VirtualChannel IdentifierPV Protocol VersionPage 2 of 2 pagesANSI T1.644-1995
