1、DINE DIN ET% 303%00 72 W 2774442 OB%bid58 b?b OK 6541 : 621.395 DEUTSCHE NORM SeDtember 1992 ISDN Leitweglenkung zur Untersttzung von ISUP-Version-1 -Diensten Englische Fassung ETS 300 100 : 1992 DIN - ETS 300 100 Integrated Services Digital Network (ISDN); Routing in support of ISUP version 1 servi
2、ces; English version ETS 300 100 : 1992 Die Europische Telekommunikationsnorm ETS 300 100 : 1992 hat den Status einer Deutschen Norm. Nationales Vorwort Die vorliegende Nom ist auf der Grundlage der vom Europischen Institut fr Telekommunika- tionsstandards (ETSI) herausgegebenen Europischen Telekomm
3、unikationsnomi ETS 300 100, Ausgabe Januar 1992, “Integrated Services Digital Network (ISDN); Routing in support of ISUP version 1 services“, verffentlicht worden. Diese Norm enthlt unter Bercksichtigung des DIN- Prasidialbeschlusses 13/1983 den englischen Originaltext des vom Technischen Unterkomit
4、ee NA 2 des ETSI erarbeiteten ETS 300 100. Fachlich zustndig in Deutschland ist ein Ad-hoc- Arbeitskreis des Technischen Beirates ETSI (TBETSI) der DKE. Diese Norm basiert auf der CCIlT-Empfehlung E.172 und enthlt Richtlinien fr die Leitweg- lenkung bei der Einfhrung des europischen ISDN ab 1992. Di
5、e beschriebenen Funktionen beziehen sich auf internationale End- und Transitvermittlungsstellen, die mit dem ISDN- Benutzerteil nach DIN ETS 300 121 (derzeit Manuskript fr Norm) ausgerstet sind. Fortsetzung 20 Seiten ETS Deutsche Elektrotechnische Kommission im DIN und VDE (DKE) M(einrerkauf dec Nor
6、men durch euth Veriag GmbH. Burggrafenstrae 6,1000 Berlin 30 DIN ETS 300 700 Sep 7992 Preisgr. 71 09.92 Verti.-Nr. 1711 DINL DIN ETS 3OOLOO 92 = 2794442 OLqL459 502 ETS 300 100 January 1992 Source: ETSI TC-NA Reference: T/N 23-03 UDC: 621.395 Key words: ISDN, routing Integrated Services Digital Netw
7、ork (ISDN); Routing in support of ISUP version 1 services ETSI European Telecommunications Standards Institute ETSI Secretariat: B.P.152 . F - 06561 Valbonne Cedex . France TP. + 33 92 94 42 O0 TF. + 33 93 65 47 16 Tx. 47 O0 40 F European Telecommunications Standards institute 1 992. All rights rese
8、rved. No part may be reproduced or used except as authorised by contract or other written permission. The copyright and the foregoing restriction on reproduction and use extend to all media in which the information may be embodied. DIN1 DIN ETS 3OOLOO 92 W 2794442 OL9L460 224 Page 2 ETS 300 100:1992
9、 e Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to “ETSI Standards Management Dept.“ at the address shown on the title page. DIN1 DIN ETS 3001
10、00 92 D 2794442 OL914bL LbO D Page 3 ETS 300 100:1992 Contents . Foreword . 5 1 2 3 4 5 6 7 Scope . 7 Normative references 7 Symbols and abbreviations . 8 Additions and/or clarifications to CCITT Recommendation E . 172 l I 9 4.2 Annex A to E.172 9 4.3 Annex B to E.172 9 4.1 Paragraph 6: Signalling C
11、apability 9 Additional information on parameters used for routing 9 5.1 . 5.2 5.3 5.4 Use of the Transmission Medium Requirement parameter . 9 Capability of signalling systems to support various TMRs . 10 Relationship between requested service and TMR values . 11 ISUP preference indicator values for
12、 ISDN services . 11 5.4.1 General 11 5.4.2 Services requiring “ISUP Required“ 12 5.4.3 Services requiring “ISUP Preferred“ 12 5.4.4 Services requiring “ISUP Not Required“ 12 Interworking requirements for the support of PSTN/IDN services in ISDN 32 6.1 Interworking from TUPkhannel associated signalli
13、ng to ISUP 12 Interworking from ISUP to TUPlchannel associated signalling Interworking between TUPlchannel associated signalling and ISUP 12 systems . 12 Interworking between TUP + and ISUP 13 6.2.1 6.2.2 Interworking from ISUP to TUP + . , . 14 Interworking impact on supplementary services 15 Servi
14、ce interworking/intercommunication and fall back 16 6.4.1 Impact on service interworking and intercommunication on routing 16 6.1.1 6.1.2 6.2 Interworking from TUP + to ISUP 13 6.3 6.4 Selection of path/traffic distribution . 18 Annex A (normative): . 19 Supp01-t of supplementary services in ISDN by
15、 ISUP version 1 . 19 Annex B (informative): Bibliography 19 DINI DIN ETS 30OIOO 92 = 2794442 OL9L4b2 OT7 D Page 4 ETS 300 100: 1992 Blank page DIN1 DIN ETS 3003100 92 m 2794442 4333933463 T33 m Page 5 ETS 300 100:1992 Foreword This European Telecommunication Standard (ETS) has been produced by the N
16、etwork Aspects (NA) Technical Committee of the European Telecommunications Standards Institute (ETSI), in co- operation with the Signalling Protocols and Switching Sub-Committee, and with the T/SF Committee of the Conference of European Posts and Telecommunications. This ETS is based on CCIlT Recomm
17、endation E.172 111 as given in the CCITT Blue Book, Volume II, fascicle 11.2, 1988. The requirements of this CCITT Recommendation shall apply together with the additional elements, and subject to the clarifications identified in this ETS. CCITT Recommendation 1.335 21, as given in the CCITT Blue Boo
18、k, Volume II, Fascicle 111.8, 1988 describes the use of the ISUP Transmission Medium Requirement for routing. This ETS has been prepared in support of the ISDN, as defined in ETSI Technical Report ETR O10 “The ETSI Basic Guide on the European Integrated Services Digital Network (ISDN)“, which contai
19、ns a complete list of services which the ISDN will provide. This ETS also supports services and capabilities as specified in ETS 300 121 31. ETS 300 100: 1992 Blank page - DIN1 DIN ETS 3830LOO 92 I 27%44eb2 QLL4b5 - computerised communication; - teleaction; - audiographic teleconferencing; - 7 kHz t
20、elephony; - videotelephony. 2 Normative references This standard incorporates, by dated or undated reference, provisions from other publications. Those normative references specific to this part are cited at the appropriate places in the text and listed below. For dated references, subsequent amendm
21、ents to, or revisions of these publications will apply to this standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 1 I 121 I31 2 X 64 kbit/s circuit mode bearer service; CCITT Recommendation E.172 (1 988):
22、“Call Routing in the ISDN Era“. CCIlT Recommendation 1.335 (1 988): “ISDN Routing Principles“. ETS 300 121 : “Integrated Services Digital Network (ISDN); Application of the ISDN user part of CCITT Signalling System ,No.7 for international ISDN interconnections; CCIlT Recommendation 0.767 draft editi
23、on 3: 1990 - modified“. CCITT Recommendation 1.530 (i 988): “Network Interworking between an ISDN and a PSTN“. i41 DIN1 - DIN ETS 3QOLQ51 92 m 2774q112 C3L4bb 742 m Page 8 ETS 300 100:1992 3 Symbols and abbreviations BC Bearer Capability CCITT Comit Consultatif International Telegraphic et Telephoni
24、que CEPT CLIP CLIR COLP COLR CUG DDI ETSI ION I PI ISDN ISUP ITC MSN PSPDN PSTN R2 sc Confrence des Administrations Europenes Tlcommunications Calling Line Identification Presentation Calling Line Identification Restriction Connected Line Identification Presentation Connected Line Identification Res
25、triction Closed User Group Direct Dialling In European Telecommunications Standards Institute Integrated Digital Network ISUP Preference Indicator Integrated Services Digital Network ISDN User Part Information Transfer Capability Multiple Subscriber Number Public Switched Packet Data Network Public
26、Switched Telephone Network Signalling System R2 Signalling Capability des Postes et SUB TMR Subaddressing Transmission Medium Requirement TP Terminal Portability TUP Telephone User Part TUP + Enhanced Telephone User Part uus User-to-User Signalling DINL DIN ETS 3OOLQQ 92 2794442 0191487 b89 = Page 9
27、 ETS 300 1 OO:1992 4 Additions andloi clarifications to CCITT Recommendation E. 172 l J 4.1 Paragraph 6: Signalling Capability Subclause 5.4 of this standard contains the application of the criteria for setting the IPI parameter for the implementation of the ISDN in Europe. In table 3 of the CCITT R
28、ecommendation, the cases “64 kbit/s unrestricted“ and ISUP not required“ are characterised by “Not applicable“. The conjunction of these two values could nevertheless be used, according to bilateral agreements, in order to provide an international digital connectivity service (see also subclause 5.4
29、 of this standard and Note 11 to table 4 of the CCITT Recommendation) . 4.2 Annex A to E.172 The information contained in this annex is extended in subclauses 5.1 to 5.3 of this standard, to cover the implementation of the ISDN in Europe. The interworking situation from PSTN to ISDN is further detai
30、led in Clause 6 of this standard. 4.3 The application of the criteria defined in this annex to the implementation of the ISDN in Europe is specified in subclause 5.4 of this standard. 5 5.1 The use of the ISUP Transmission Medium Requirement (TMR) parameter for routing is described in: - - In additi
31、on to the statements made in the above mentioned paragraphs, the following shall apply: Annex B to E. 172 Additional information on parameters used for routing Use of the Transmission Medium Requirement parameter CCITT Recommendation E.172 ill, paragraph 5 (hi; and CCITT Recommendation 1.335 21, par
32、agraphs 4.2.1 (e) and 4.4.4.4. The TMR shall be used for routing in the international network; The TMR parameter shall be conveyed unchanged in the international network. For a specific service request, one TMR value shall be used in the international network and across internetwork boundaries. For
33、its value see subclause 5.3. It is recommended that national networks use the same TMR values as the international network. Conversion from the requested service to the TMR value can then be performed in the originating local exchange. If not done there, then the TMR information must be available fr
34、om the outgoing international gateway onwards. It is then forwarded to following exchanges, if possible even up to the destination exchange. At transit international exchanges as well as at incoming international gateway exchanges, the TMR shall be examined for routing purposes, irrespective of the
35、service requested. This does not preclude that incoming gateway exchanges may need to examine additional information available to determine national routing. Page 10 ETS 300 100:1992 5.2 Table 1 indicates, for the different values of TMR, which international signalling systems have the capability of
36、 carrying implicitly or explicitly the TMR information lor request): Capability of signalling-systems to support various TMRs 64 kbi t/s unrestricted 3.1 kHz audio speech Table 1 V V V (NOTE 1) (NOTE 3) (NOTE 2) (NOTE 2) (NOTE 4: V V V V V V (NOTE 1) (MOTE 4: V V V (NOTE 1) (NOTE 2) (NOTE 2) (NOTE 4
37、: Signalling systems Transmi ssi on CCI TT V: The explicit or iirplicit transfer of the TMR information is possible. The signalling system definitely can be used. NOTE 1: The TUP+ uses the Information Transfer Capability (ITC) to indicate the requested THR (see subclause 6.2). The explicit transfer
38、of the THR information is not possible. This does not preclude the use of the signalling system, if: a) information is nade available by other means (specialised trurk, particular or MOTE 2: b) the configuration of the network can guarantee the provision of the requested THR; or c) there is further
39、enhancement of the signalling system in question. MOTE 3: The TUP provides for a possibility to indicate 64 kbit/s connectivity. CCITT Signalling system Mo. 5 links may not support bc kbit/s unrestricted and 3,l kHz audio bearer service because of the splitting fation. CCITT Signalling system No. 5
40、does not swrt all kinds of modeni operation e.g., V.22bis is not supported. Therefore, CCITT Signalling system No. 5 only supports the THR speech. NOTE L: Qage 11 ETS 300 100:1992 Requested service 64 kbit/s unrestricted 3,l kHz audio speech Bearer Packet Mode Case A: Service E-Channel Packet Mode C
41、ase E: E - Chame i 5.3 Relationship between requested service and TMR values TMR valw speech 3.1 kHr 64 kbi t/s audio unrestricted X X X X (NOTE 1) X I The following table gives TMR values for ISDN services to be used across international and internetwork boundaries: Te let ex ISDN Syntax Based Vide
42、otex Table 2 - X X Voice Band Data D igi tal Connect ivi ty Packet Mode Case E: D- Chame 1 X X Telephony 3,l kHz 1x1 I I I Ix .-.- kervices ITelefax Group 4 - . . IDN services Facsimile Group 3 I 1x1 NOTE 1: If implemented through the use of an on-demand or a semipermanent connection basis between t
43、he X.25 terminal and the packet handler. The packet niode case B 0-charnel does not use TMR. NOTE 2: 5.4 5.4.1 General ISUP preference indicator values for ISDN services CCIlT Recommendation E.172 I1 1 describes the use of the ISUP Preference Indicator (IPI) and sets out criteria for setting the IPI
44、 to one of the three possible values. This section applies these criteria to the ISDN services and assigns IPI values to them. Where more than one service is requested and one of the service requests is for a more restrictive IPI value, then the more restrictive IPI value shall be used. Example: In
45、the case of a joint request for services CUG (without outgoing access) - “ISUP required“, and subaddress - “ISUP preferred“, then the IPI value “ISUP required“ shall be used. Page 12 ETS 300 100: 1992 5.4.2 Closed User Group (CUG) without outgoing access. Services requiring “ ISUP Required“ NOTE: TU
46、P+ may be selected. 5.4.3 The value “ISUP preferred“ is a minimum for all calls initiated by ISDN subscribers, in order to allow provision of supplementary services invoked after initial service request. 5.4.4 Calls originating in the PSTN. 6 The ISDN is evolving from PSTN/IDN. Existing PSTN/IDN ser
47、vices (refer to tables 2 and 9) therefore also have to be supported in the ISDN. This requires network interworking between the ISDN and PSTN (refer to CCITT Recommendation. 1.530 41). In most countries there will be an integrated PSTNASDN network. The following paragraphs only cover the interworkin
48、g aspects of routing. They do not intend to cover all the signalling interworking aspects, which should be described in the signalling standards. 6.1 6.1.1 In the case of interworking between an incoming signalling system that does not have the capability of an explicit indication about the requeste
49、d signalling capability and the ISUP, the implicit value given to the “ISUP preference indicator“ shall be “ISUP not required“, since it is not useful to request ISDN signalling capabilities. In the.case of interworking between an incoming TUP or a channel associated signalling system that does not have the capability of an explicit indication about the requested TMR and ISUP: a) b) in the case where an information is made available by any means indicating a digital connectivity request, the value given to the TMR para
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