1、 Reference numberISO/IEC TR 12860:2009(E)ISO/IEC 2009 TECHNICAL REPORT ISO/IECTR12860First edition2009-04-15 Information technology Telecommunications and information exchange between systems Next Generation Corporate Networks(NGCN)General Technologies de linformation Tlcommunications et change dinf
2、ormation entre systmes Rseaux dentreprise de prochaine gnration(NGCN)Gnralits ISO/IEC TR 12860:2009(E)PDF disclaimer This PDF file may contain embedded typefaces.In accordance with Adobes licensing policy,this file may be printed or viewed but shall not be edited unless the typefaces which are embed
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7、d ii ISO/IEC 2009 All rights reserved ISO/IEC TR 12860:2009(E)ISO/IEC 2009 All rights reserved iiiContents Page Foreword.v Introduction.vi 1 Scope.1 2 Normative references.1 3 Terms and definitions.2 4 Abbreviated terms.4 5 Background.5 6 General concepts.6 6.1 Basic communication architecture.6 6.2
8、 Session level architecture.8 6.2.1 Signalling using SIP.8 6.2.2 Media path.10 6.2.3 Example.10 6.3 Domains.10 6.4 Mobility.11 6.4.1 Roaming of enterprise users outside their home domain.12 6.4.2 Accommodating guest users on an NGCN.13 6.5 The hosting concept.13 6.5.1 Dedicated NGCN.14 6.5.2 Enterpr
9、ise hosted by a single public network infrastructure.15 6.5.3 Enterprise hosted by multiple public network infrastructures.15 6.5.4 Enterprise hosted by a combination of enterprise infrastructure and a public network infrastructure.16 6.6 Private network traffic and public network traffic.16 6.7 Oth
10、er technical considerations.17 7 Scenarios for session-based communications.17 7.1 Session-based intra-domain communications.18 7.2 Session-based inter-domain communications within a single enterprise network.19 7.2.1 Communication between domains supported by the same infrastructure.20 7.2.2 Commun
11、ications between domains of an NGCN via a TSP.21 7.2.3 Communications between domains of an NGCN using private network traffic through a hosting NGN.21 7.2.4 Communications between domains of an NGCN using public network traffic through a public SSP such as an NGN.22 7.2.5 Communications between a d
12、edicated NGCN domain and a domain hosted by an NGN.22 7.2.6 Communications between a dedicated NGCN domain and a domain hosted by an NGN as private network traffic via an intermediate NGN domain.22 7.3 Session-based communication between two enterprises.23 7.3.1 Extension of enterprise network to in
13、clude partner networks.23 7.3.2 Direct peering.23 7.3.3 Indirect peering.24 7.3.4 Third party assistance.25 7.3.5 Direct peering between two enterprises hosted by the same hosting enterprise infrastructure.26 7.4 Session-based communication with users of public networks.26 7.4.1 Communication betwee
14、n an NGCN user and an NGN public network user.26 7.4.2 Communication between an NGCN user and an NGN public network user with break-in or break-out function in the NGN.27 ISO/IEC TR 12860:2009(E)iv ISO/IEC 2009 All rights reserved 7.4.3 Communication between an NGCN user and a public network user of
15、 a remote NGN.28 7.4.4 Communication between an NGCN user and a public network user of a remote NGN with break-in or break-out function in the local NGN.28 7.4.5 Communication between an NGCN user and a public network user of a remote NGN with break-in or break-out function in the remote NGN.28 7.4.
16、6 Communication between an NGCN user and a PSTN/ISDN user via an NGN.29 7.4.7 Communication between an enterprise user hosted by a public network infrastructure and a public network user of that same infrastructure.30 7.5 Session-based roaming.30 7.5.1 An NGCN user at a visited sub-domain of the NGCN.30 7.5.2 An NGCN user at a visited sub-domain of the NGCN using private network traffic through an NGN.31 7.5.3 An NGCN user at a visited NGN.31 7.5.4 An NGCN user at a visited NGN using indirect ro
