ONORM ENV 41801-8-1993 信息系统互联.无连接式网络服务用继电器.RC51.1111文件(PSDN租用线路范围内的M-IT-02R/22)

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标准号:ONORM ENV 41801-8-1993
中文标准名称:信息系统互联.无连接式网络服务用继电器.RC51.1111文件(PSDN租用线路范围内的M-IT-02R/22)
英文标准名称:Information systems interconnection - Relaying the connectionless-mode network service - Profile RA51.1111 (M-IT-02 R/22 over PSDN leased line)
发布日期:1993/1/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 GeneralThis Functional Standard is applicable to interworking units concerned with operating in the Open Systems Interconnection (OSI) environment. It specifies a combination of OSI base standards that collectively provide a Network-relay function for the Connectionless-mode Network Service.This part of this Functional Standard is defines the R/A51.1111 profile, which is applicable to interworking units operating between CSMA/CD LAN subnetworks and PSDNs using Virtual Calls over a PSTN leased line permanent access.1.2 Position within the TaxonomyThe taxonomy of profiles is defined in M-FT-02. This part of this Functional Standard defines the profileR/A51.1111 Relaying the Connectionless-mode Network Service betweenCSMA/CD LAN subnetworks and PSDNs using virtual calls over a PSTN leased line permanent access.1.3 ScenarioFigure 1 illustrates the configuration of systems to which the R/A51.1111 profile is applicable. The figure shows two reference points, but an implementation of this profile may include more attachments to CSMA/CD LANs and PSDNs, with a reference point at each.

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