1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 ) TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU).4%2!4%$G0G03%26)#%3G0G0$)4!,G0G0.%47/2+G0 )3$.G93%26)#%G0#!0!“),)4)%35)$!.#%G0G04/G0G04(%G0G0) G0G13G03%2)%3G0G0/- to facilitate the requirements of different readers by separating, in specific Recommendati
2、ons, generalservice concepts and definitions from Recommendations covering detailed characteristics of individualservices;- to use systematically the service description method given in Recommendation I.130 where, the stage 1,telecommunication services are described in three steps:1) prose definitio
3、n and description;2) static description using attributes;3) dynamic description using graphic means.2 Structure of the I.200-Series of RecommendationsSection 2.1 gives the layout and Figure 1/I.200 illustrates the structure of the I.200-Series of Recommendations.The general service concepts and prin
4、ciples are given in Recommendation I.210. Annexes to RecommendationI.210 describe the application of the service description method to the three service families: bearer services, teleservicesand supplementary services.A separate section of the I.200-Series is allocated to each service family. Withi
5、n each of these sections the firstRecommendation gives an overview of the services within each family and the subsequent Recommendations specify indetail individual services. The reader interested in an overview of service concepts and principles, as well as the methodto describe services, will find
6、 them in Recommendations I.210, I.230, I.240 and I.250.The reader interested in the detailed characteristics of individual services will find them in RecommendationsI.231, I.232, I.241 and I.251-I.257. Detailed items of common significance are defined and described in the I.220-Seriesof Recommendati
7、ons.Note - In the CCITT Red Book (1984) all ISDN service requirements were contained in threeRecommendations, numbered I.210, I.211 and I.212. References have been made widely to these threeRecommendations in other Recommendations and elsewhere, and to facilitate a translation to the new CCITT Blue
8、Book(1988) version of theI.200 Recommendations Appendix I shows the mapping between the Red Book and Blue Book versions of the I.200-Series of Recommendations.2.1 Layout of the I.200-Series of RecommendationsI.200 Guidance to the I.200-Series of RecommendationsSECTION 1 - General aspects of services
9、 in an ISDNI.210 Principles of telecommunication services supported by an ISDN and the means to describe themSECTION 2 - Common aspects of services in an ISDNI.220 Common dynamic description of basic telecommunication servicesI.221 Common specific characteristics of services2 Fascicle III.7 - Rec. I
10、.200SECTION 3 - Bearer services supported by an ISDNI.230 Definition of bearer services categoriesI.231 Circuit mode bearer services categoriesI.232 Packet mode bearer services categoriesSECTION 4 - Teleservices supported by an ISDNI.240 Definition of teleservicesI.241 Teleservices supported by an I
11、SDNSECTION 5 - Supplementary services in an ISDNI.250 Definition of supplementary servicesI.251 Number identification supplementary servicesI.252 Call offering supplementary servicesI.253 Call completion supplementary servicesI.254 Multi-party supplementary servicesI.255 “Community of Interest“ supp
12、lementary servicesI.256 Charging supplementary servicesI.257 Additional information transfer supplementary servicesFascicle III.7 - Rec. I.200 3APPENDIX I(to Recommendation I.200)Mapping between the Red Book and Blue BookI.200-Series of RecommendationsRed Book Recommendations Blue Book Recommendatio
13、nsRec. I.210 1-6Rec. I211 122.12.1.12.1.22.1.32.1.42.1.52.1.62.1.72.1.82.22.2.12.2.233.1.13.1.23.1.33.1.43.1.53.1.63.1.73.1.83.2.13.2.2Rec. I.212 12Rec. I.210 1-6Rec. I.210 Annex BI.230 22.1I.231 1234DeletedI.231 678I.230 2.2I.232 12I.230 3I.231 1.7.22.7.23.7.24.7.2DeletedI.231 6.7.27.7.28.7.2I.232 12Rec. I.210 C.1C.2
