1、 02-07 Page 1 E Recommendation T/GSI 02-07 (by correspondence, June 1987) SUPPLEMENTARY SERVICES ASSOCIATED WITH BEARER SERVICES Recommendation proposed by the Special Group Integration (GSI) Text of the Recommetidatioii adopted by the “Telecommuiiictions” Commission: “The European Conference of Pos
2、ts and Telecommunications Administrations, considering - the common CEPT approach to the ISDN and general CEPT assumptions and policies for the evolution towards ISDN, - the I. Series Recommendations of the CCITT, as well as other CCITT Recommendations on ISDN, to which - the need for CEPT Administr
3、ations to have more precise answers to their specific European requirements, is. - the need for CEPT Administrations to have as a base a comprehensive set of Recommendations, in order to CEPT Administrations have contributed most significantly, to select and further dene material from CCITT Recommen
4、dations, promote and strengthen European harmonisation, O recommends - to the members of the CEPT that they evolve their telecommunication networks towards ISDN according to the specifications given in the attached text.” Edition of October 31, 1987 CEPT T/GSI*02-07 E 7 2326414 0005424 T M T/GSI 02-
5、07 E Page 2 1. GENERAL ASPECTS Supplementary Services are used to modify or enhance a basic Bearer Service or a Teleservice to the users needs. They can only be offered as an addition to the basic services. The capabilities to support supplementary services can be implemented in the network nodes, i
6、n specialised service centers or in terminals. The operation of supplementary services should always be consistent with basic services and other supple- mentary services characteristics. The definition and description of individual supplementary services is given in Recommendation The description me
7、thod of supplementary services is given in Recommendation T/GSI 01-07 2. General Services aspects are described in Recommendation T/GSI 02-0 1 3. The definition of Bearer Services is given in Recommendation T/GSI 02-02 4. The definition of attributes and possible attribute values is given in Recomme
8、ndation T/GSI 01-05 5. T/GSI 02-06 i. 2. SUPPLEMENTARY SERVICES TO BEARER SERVICES MATRIX For those supplementary services which will be offered during phase 1 and phase 2 of the ISDN implementa- tion, the association with the individual bearer services is contained in Annex 1. A provisional associa
9、tion of other supplementary services with the individual bearer services is shown in Appendix 1. This appendix needs to be completed when the supplementary services are described. Note 1 I The following symbols have been used in Annex 1 and Appendix 1. Where more than one variant of a supplementary
10、service exists the supplementary service family name has been used and allocated a priority of introduction. E: Indicates that the supplementary service is essential, has a high priority for introduction and should be made available internationally. A: Indicates that the supplementary service is ide
11、ntified as additional, has a lower priority for introduction and may be available in some ISDNs. It may also be available internationally. T: Supplementary services in principle may be located in either the network or in the terminal or a combination of both. The T indicates that a terminal solution
12、 is considered to have a high priority (e.g. for the supplementary services Abbreviated Address and Repeat Last Call). Note 2. The sequence of supplementary services listed in the Annex 1 reflects the sequence of introduction as proposed by the Commission of the European Communities and adopted by t
13、he European Conference of Posts and Telecommunications Administrations. REFERENCES I T/GSI 02-06. Supplementary service dejnition. 2 T/GSI 01-07. Method for the characterization of Telecommunication services supported by an ISDN and network capabilities of an ISDN. 3 T/GSI 02-01. Service dejnition.
14、4 T/GSI 02-02. Bearer services. 5 T/GSI 01-05. General modelling method. /= Y O Edition of October 31, 1987 CEQT T/GSI*02-07 E 87 2326434 0005425 II = - T/GSI 02-07 E Annex 1, page 3 Annex 1 Matrix with the Relevance and Priority of Supplementary Services to ISDN Bearer Services - c c cc B iJ 3 E P
15、* x a - - ri E E E E E E E E E E E E E A Advice of charge (2) E E E A E E - E E - E E - Call waiting (1) Calling line identification presentation (1) - E Calling line identification restriction (1) E E E E E E E Closed user group (1) (4) Completion of calls to busy subscribers (2) E E - E E - E E ._
16、 Conference call (2) Direct dialling in (1) E E E E E E - - E Diversion services (2) Freefone service (2) E E E - E E - Malicious call ident (2) Number identification, called user (2) E E E E EE AA EE AA E E E A Sub-addressing (1) (4) Terminal portability (1) (4) E E - E E - E E - Terminal selection
17、 (1) (4) Three party service (2) E E E E E E A User to user signalling (1) (3) (4) Note 1. Supplementary Services to be made available in the first phase of ISDN implementation (from 1988). Note 2. Supplementary Services to be made available in the second phase of ISDN implementation (1988-1993). No
18、te 3. Initially this supplementary service may only be provided in call control messages (service 1, compare Recommendation Note 4. The implementation of these supplementary services may be foreseen in a later stage in some countries. T/GSI 02-06 i). Edition of October 31, 1987 CEPT T/GSI*02-07 E 7
19、2326434 0005426 3 T/GCI 02-07 E Appendix 1, page 4 Appendix 1 Provisional Matrix with the Relevance of Supplementary Services to ISDN Bearer Services Bearer services Supplementary service Abbreviated address T A - Alarm call service Alarm (warning) service A A A Booked call - E - E - E Call barring
20、service Call hold (1) E E E Cent distribution of recorded private info E E E A E - - - A E - - A E - - A Cent PBX facilities (City-Wide Centrex) A E - A E - Change of service during an established call Code/speed conversion E E Credit card calling A A A - Date and time call record Directory enquirie
21、s a AUT MAN - E Editing Expediting of a call in progress Fault reporting service Fixed destination call - E E E E E E E A A A Lecture call Line hunting E T/GSI 02-07 E Appendix 1, page 5 Appendix 1 (continued) T IA General deactivation A A E A A A E I General telecoms info Interception of calls IA A
22、 - E Logging of I/C calls IA A l National select and ind of throughput class A - A - Op access to and control of supplementary servs Out of area lines Packet delivery conrm Payphone service A A Permanent sub-number Priority E - E Priority selection Repeat last call T T A E - Sequence calling A Trans
23、fer of charge E Universal access no E E User selection of pad parameter settings Wide area service Note 1. Further study is required on whether “call hold” is a supplementary service or only a functional component to support other supplementary services, e.g. Call Waiting, Three Party Service. Edition of October 31, 1987
