ETSI EN 301 060-1-1998 Integrated Services Digital Network (ISDN) Digital Subscriber Signalling System No One (DSS1) Protocol Basic Call Control Enhancement at the b Service Entr_1.pdf

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1、EN 30 1 060- 1 VI 2.2 (1998-04) European Standard (Telecommunications series) Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSSI) protocol; Basic call control; Enhancement at the “b“ service entry point for Virtual Private Network (VPN) applications; Part

2、1 : Protocol specification 2 EN 301 060-1 Vl.2.2 (1998-04) Reference Keywords Bask, DSS1, ISDN, VPN, Protocol ETSI Postai address F-O6921 Sophia Antipolis Cedex - FRANCE Office address 650 Route des Lucioles - Sophia Antipolis Valbonne - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret N“

3、 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) No 7803B8 internet secretariata etsi.fr http:/www.etsi .fr htp:/www.etsi.org Copyright Notification No part may be reproduced except as authorized by written permission. The copyright and the fore

4、going restriction extend to reproduction in ail media. Q European Telecommunications Standards Institute 1998. Ail rights reserved. ETSI _ _ STD.ETS1 EN 301 ObO-1-ENGL 1798 3400855 02b258 922 E 3 EN 301 060-1 Vl.2.2 (1998-04) Contents Intellectual Property Rights 5 Foreword 5 1 Scope 6 2 References

5、6 2.1 Normative references . 7 2.2 Informative references 7 3 Definitions 7 4 Abbreviations . 9 5 Description . 9 5.1 5.2 Networking aspects - requirements 5.2.1 5.2.1.1 Support of multiple CNs . 12 5.2.2 Emulation of nginating 5.2.3 Provision of Relay Node 5.2.4 Connection requirements 12 6 Operati

6、onal requirements . 13 VPN services in the context of CN . Emulation of Transit PINX functionality and Gateway PINX functionality in the 7 7.1 7.1.1 7.1.2 7.2 7.2.1 7.2.2 7.2.3 7.2.4 7.2.5 7.2.6 7.2.7 Coding requirements 13 Additional messages and content . 13 SETUP message . . 13 Additional informa

7、tion elements coding 14 16 17 17 17 Transit counter 18 VPN indicator 18 CONNECT message 14 Called party number . . 8 Basic call states 19 9 Circuit-switched cai1 control procedures . 19 9.1 Distinction between public network and VPN context 19 9.2 Procedures applicable for signalling in a public net

8、work context 19 9.3 . 20 9.3.1 Establishment of calls from a physical PINX . 20 9.3.1.1 Call request . 20 9.3.1.2 Call confirmation . 9.3.2 9.3.2.1 Incoming call 21 9.3.2.2 Call confirmation . 22 9.3.3 Notification of interworking and provision of in-band information . 22 9.3.3.1 Actions at a preced

9、ing PINX 22 9.3.3.2 Actions at a subsequent PINX . . 23 10 System parameters . 24 Annex A (informative): A.l Representation of a CN in terms of functional groupings . 25 A.l.l Connections between PiNXs . 25 A.1.2 A.1.3 Procedures applicable for signalling in a VPN context Establishment of calls towa

10、rds a physical PINX . Networking aspects - CN models . 25 Structured overview of the functional groupings which may be involved in a call . Transit networking service provided by the public network . ETSI . 4 EN 301 060-1 VI .2.2 (1998-04) A.1.4 Transit and terminating functions provided by the publ

11、ic network 27 History . .29 5 EN 301 060-1 V1.2.2 (1 998-04) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members

12、 , and can be found in ETR 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available free of charge from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/www.etsi.fr/ipr or h

13、ttp:/www.etsi.org/ipr). Pursuant to the ETSI Interim PR Policy, no investigation, including IPR searches, has been camed out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETR 314 (or the updates on the ETSI Web server) which are, or may be, or may become, ess

14、ential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Technical Committee Signalling Protocols and Switching (SPS). The present document defines the Digital Subscriber Signalling System No. one (DSS1) extensions to the basic call to sup

15、port the Private Signalling System No. one (PSS1) information flow (see ISO/IEC 11572 7) in Virtual Private Network (VPN) applications. The relevant requirements and other information that affect DSS1 are defined in the present document. The present document is part 1 of a multi-part European Standa

16、rd (Telecommunications series) covering the Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Basic call applications: enhancement at the “b“ service entry point for Virtual Private Network (VPN) applications, as identified below: Part 1: “Prot

17、ocol specification“; Part 2: “PICS proforma specification“; Part 3: Part 4: Part 5: Part 6: “Test Suite Structure and Test Purposes (TSS “Abstract Test Suite (ATS), user“; “Test Suite Stmcture and Test Purposes (TSS “Abstract Test Suite (ATS), network“. National transposition dates Date of adoption

18、of this EN: Date of latest announcement of this EN (doa): Date of latest publication of new National Standard or endorsement of this EN (dop/e): Date of withdrawal of any conflicting National Standard (dow): 3 April 1998 31 July 1998 31 January 1999 31 January 1999 ETSI 6 EN 301 060-1 V1.2.2 (1998-0

19、4) 1 Scope The present document specifies the extensions of the protocol for basic call control for the pan-European integrated Services Digital Network (ISDN). These extensions are applicable at the “b“ service entry point (as defined in clause 5 of the present document). It is part of the Digital

20、Subscriber Signalling System No. One (DSS1) protocol. The present document contains only additional requirements to those in the main body of ETS 300 403-1 2. The present document is applicable only to point-to-point access configurations. The present document specifies additional protocol elements

21、and call control procedures for the handling of calls between users in a Corporate telecommunication Network (CN) at the “b“ service entry point. The functionality provided by the public network may be: - - - the emulation of an Originating Private Integrates services Network Exchange (PINX); the em

22、ulation of a Terminating PINX; the emulation of a Transit PINX, - - - the emulation of a Relay Node; the emulation of an Incoming Gateway PINX; the emulation of an Outgoing Gateway PINX; - the emulation of a combination of two or more of the above. The support of these capabilities is a network opti

23、on. The present document does not cover the requirements for support of the “a“ service entry point. The specification included in the present document does not imply any specific implementation technology or platform. Callskonnections relating to the “b“ service entry point are distinguished from c

24、alls that are accessing the public network at the T reference point. Calls relating to the T reference point are supported in accordance with the requirements of EN 300 403-1 2. Calls relating to the “b“ service entry point are supported in accordance with the requirements of the present document. T

25、he requirements have been defined such that both contexts can coexist on the same access, and this is expected to be a typical implementation. There is no requirement that when the provisions of the present document are implemented, calls at the T reference point also need to be implemented on the s

26、ame access. Where both contexts are implemented, the access resources are common to both contexts. NOTE: 2 References References may be made to: a) specific versions of publications (identified by date of publication, edition number, version number, etc.), in which case, subsequent revisions to the

27、referenced document do not apply; or b) all versions up to and including the identified version (identified by “up to and including“ before the version identity); or c) all versions subsequent to and including the identified version (identified by “onwards“ following the version identity); or d) pub

28、lications without mention of a specific version, in which case the latest version applies. A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same number. ETSI STD.ETS1 EN 30L UbU-1-ENGL 1798 3400855 OZbZbr7 353 7 EN 301 060-1 V1.2.2 (1998-0

29、4) 2.1 Normative references 41 i51 61 171 i81 ITU-T Recommendation 1.41 1 (1993 j: “ISDN user-network interfaces - reference configurations“ EN 300 403-1: “Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Signalling network layer for circuit-m

30、ode basic call control; Part 1: Protocol specification“. ETS 300 097-1: “Integrated Services Digital Network (ISDN); Connected Line Identification Presentation (COLP) supplementary service; Digital Subscriber Signalling System No. one (DSS 1) protocol; Part 1: Protocol specification“. ITU-T Recommen

31、dation 1.210 (1993): “Principles of telecommunication services supported by an ISDN and the means to describe them“. ITU-T Recommendation 1.1 12 (1993): “Vocabulary of terms for ISDNs“ ISO/IEC 11571 (1994): “Information technology - Telecommunications and information exchange between systems - Numbe

32、ring and sub-addressing in private integrated services networks“. ISO/iEC 11572 (1996), plus Amendment 1 (1996) and Amendment 2 (1996): “Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Circuit mode bearer services - Inter-e

33、xchange signalling procedures and protocol“. ISO/IEC 11579-1 (1994): “Information technology - Telecommunications and information exchange between systems - Private integrated services network - Part 1 : Reference configuration for PISN Exchanges (PINX)“. ISO/IEC 15056 (1997 j: “Information technolo

34、gy - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Transit counter additional network feature“. 2.2 Informative references lo1 ITU-T Recommendation 1.330: “ISDN numbering and addressing principles“ i111 ETR 17

35、2 (1995): “Business TeleCommunications (BTC); Virtual Private Networking (VPN); Services and networking aspects; Standardization requirements and work i tems “ . 3 Definit ions For the purposes of the present document, the following definitions apply: Corporate telecommunication Network (CN) : Consi

36、sts of sets of equipment (Customer Premises Equipment (CPE) and/or Customer Premises Network (CPN) which are located at geographically dispersed locations and are interconnected to provide networking services to a defined group of users. NOTE 1 : The ownership of the equipment is not relevant to thi

37、s definition. NOTE 2: In the present document, even equipment which is not geographically dispersed (e.g. a single PINX or Centrex-provided services to users at a single location) may form a CN. end PINX functionality: Within the context of a call the functionality of a PINX required to provide atta

38、chment and servicing of terminals. gateway PINX functionality: Within the context of a call the functionality of a PINX required to interconnect End PINXs or Transit PINXs with nodes of other public or private networks. incoming Gateway PINX functionality: Gateway PINX functionality providing suppor

39、t of calls incoming to the CN. ETSI 8 EN 301 060-1 V1.2.2 (1 998-04) integrated Services Digital Network (ISDN) : See U-T Recommendation 1.1 12 5, definition 308. originating PINX functionality : End PINX functionality providing support of the calling user. outgoing Gateway PINX functionality : Gate

40、way PINX functionality providing support of calls from the CN to other networks. preceding PINX: In the context of a call, an entity with PINX functionality located in the direction towards the originating interface. A preceding PINX may be functionality provided by a physical PINX or may be an emul

41、ation of PINX functionality by the public network. Private Integrated services Network exchange (PINX) : A PISN nodal entity that provides automatic switching and call handling functions used for the provision of telecommunication services. The nodal entity can be implemented by one or more pieces o

42、f equipment located on the premises of the private network administrator or by equipment co- located with, or physically part of, a public network. NOTE 3: If applicable, a PINX provides to users of the same and/or other private integrated services network exchanges: - - - - telecommunication servic

43、es within its own area; and/or telecommunication services from the public ISDN; and/or telecommunication services from other public or private networks; and/or within the context of a PISN, telecommunication services from other PNXs. Relay Node functionality : Within the context of a call the functi

44、onality that identifies calls between users in the CN, and relays such calls to designated PINX functionality emulated by the public network, or to a designated terminating “b“ service entry point. This may be via other Relay Nodes. Relay Node functionality includes transparent handling of private n

45、etworking information (e.g. transit counter). service; telecommunications service: See U-T Recommendation 1.1 12 5, definition 201. subsequent PINX : In the context of a call, an entity with PINX functionality located in the direction towards the destination interface. A subsequent PINX may be funct

46、ionality provided by a physical PINX or may be an emulation of PINX functionality by the public network. supplementary service : See FU-T Recommendation 1.210 4, subclause 2.4. terminating PINX functionality: End PINX functionality providing support of the called user. transit PINX functionality : W

47、ithin the context of a call the functionality of a PINX required to interconnect End PINXs and/or other Transit PINXs and/or Gateway PINXs. Virtual Private Network (VPN) : That part of a CN that provides corporate networking using shared switched network infrastructures. This is split into VPN archi

48、tecture and VPN services. The VPN architecture is that part of a CN that provides corporate networking between customer equipment where: - the shared switch network infrastructure takes the place of the traditional analogue or digital leased lines and the function of the transit node, irrespective o

49、f the network type, whether it be the Public Switched Telephone Network (PSTN), ISDN, mobile communication network, or a separate network; the customer premises may be served in terms of end node functionality with any combination of PBX, Centrex, Local Area Network (LAN) router, or multiplexer; the CN user may also be served by terminal equipment connected to end node functionality residing on customer premises, or provided by public network equipment; and the VPN architecture in one network, or multiple networks, comprises a part of the tota