CEPT T SF 58 E-1987 Telematic and Data Transmission Services in the ISDN《在综合业务数字网(ISDN)中的信息通讯和数据传输业务》.pdf

1、CEPT T/SF*58*E 87 = 232b414 0009475 3 - _ _ T/SF 58 E Page 1 Recommendation T/SF 58 (Copenhagen 1987) TELEMATIC AND DATA TRANSMISSION SERVICES IN THE ISDN Recommendation proposed by Working Group T/WG 7 ?Services and facilities? (SF) Text of the Recommendation adopted by ?Telecommuiiications? Commis

2、sion: ?The European Conference of Posts and Telecommunications Administrations, considering - that ISDNs will soon exist in many European countries, - that there is a need to harmonise the service approach for telematic services, - that telematic services exist on the dedicated networks and will be

3、required on the ISDN, - that the 64 kbit/s circuit switched service forms the basic bearer service for telematic services in the ISDN, - that there is a requirement to integrate packet switched services in the ISDN, - that a separate signalling channel exist to initiate and support supplementary ser

4、vices, - that there is a need to harmonise the requirements for supplementary services, - that intercommunication is required behveen the existing services on the dedicated networks and telematic services - that there is a need to identify the priority for introducing telematic services in the ISDN,

5、 - that, as a minimum requirement, the telematic services in the ISDN should offer the same as those offered on the dedicated networks, - that .the supplementary services in the dedicated networks are many and various and that they should be considered when considering supplementary services for tel

6、ematic services in the ISDN, - that there is a need to define supplementary services for telematic services in the ISDN, - that there are moves afoot to liberalise the supply of terminals in Europe, O in the ISDN, I recommends that Teletex, Telefax, Videotex, data transmission and message handling s

7、hould be given high priority for introduc- tion of new services on the ISDN.? Edition of January 15, 1988 CEPT T/SF*5*E 87 W 2326434 000947b 5 W T/SF 58 E Page 2 1. 2. 2.1. 2.2. 2.3. 2.4. 3. 3.1. 3.2. 3.3. 3.4. 3.5. 4. Contents INTRODUCTION . . . . . . . . . , . . . . . , . . . . . . . . . . . . . .

8、 . . . I . . 2 IMPLEMENTATIONS OF NON-VOICE SERVICES IN THE ISDN . . . . . . . . . . . . . 3 ISDN basic service concept , . . . . . . . . . . , . . . . . . . . . . . . . . . , . . . . . 3 Teleservices (non-voice) . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . 7 Data transmission

9、 services . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Supplementary services . . , . . . . , . . . . . , . . . . . . . . . . . . . . . . . . . . 8 PROVISION OF EXISTING TELEMATIC .SERVICES IN THE ISDN . . . . . . . . . . . . 11 General guidance . . . . . . . . . . . . . . . .

10、 . . . . . . . . . . . . . . . . . . . . 11 Teletex . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . 12 Telefax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Videotex . . , . . . . . . . . . . . , . . . . . . . . . . . . . . . .

11、 . . . . . . . . . 16 MHSS . 18 INTERWORKING REQUIREMENTS , , . , . . . . , . , . . . . . . . . . . . . . . . . 21 1. INTRODUCTION This document has been produced as a consequence of the high priority phased on identifying telematic services in the ISDN and intercommunication between the existing se

12、rvices in the dedicated networks and telematic services in the ISDN. The high priority requirements from the EEC (ref. the GAP-report) is covered by this document. This document is the result of seven meetings since the group started its work in February 1986. It is the intention that this document

13、should form the basis of a Draft Recommendation. The group meet the timescale 5/1987 for the work which this document covers. The next step is definitions and descriptions of the services with a proposed timescale 6/1988. Whilst it is appreciated that voice traffic and services will dominate the ini

14、tial implementations of ISDN, it is recognised that non-voice services are growing and it is important to identify their requirements for integration. It has been necessary to ascertain the degree of commonality between the supplementary services for voice and those required for telematic services.

15、Edition of Janiia-, 4 1 O- e O O O 2. 2.1. CEPT T/SF*58*E 87 W 2326414 0009477 7 T/SF 58 E Page 3 IMPLEMENTATION OF TELEMATIC AND DATA TRANSMISSION SERVICES IN THE ISDN ISDN basic service concept NETWORK FUNCTIONS : SUPPLEMENTARY SERVICES Edition of January 15, 1988 1 TELESERVICES I I NETWORK FUNCTI

16、ONS 4 SUPPLEMENTARY SERVICES ISBN BASIC SERVICE CONCEPT CEPT T/SF*KSB*E 87 H 232b414 0009478 T/SF 58 E Page 4 V) W o K W V) K W K W - a m cn W o K W V) W ml W f- - - 1 i lN3N3d3NI I YtlOM13N I 8 I :- II .( I I I 4 I I I I I I I I I I I I t I I )I W o z e O o W o U W u) z u) n U U U Edition of Januar

17、y 15, 1988 o a I- CEPT T/SF*58*E 87 = 232b4L4 OOOq79 O = Ob a Ei- W c tk a a O zt- v) n I ISDN CS-access CS-access PS-access (X.31). DEDICATED PSTNICSPDN switched switched (X.32) permanent permanent O X.28 I X.25 I X.28 C X.25 I DEDICATED PSPDN I I I. TISF 58 E Page 5 a I- P Y a k E 4 a K O dw o z a

18、 4k W I- 42 v) iz v) n I PSTNKSPDN I I X.28 switched switched (X.32) permanent pemianent I X.25 I X.28 I X.25 ISDN - PACKET SWITCHED SERVICES O INTEGRATtON AND INTERCOMMUNICATION Edition of January 15, 1988 CEPT T/SF*SB*E 87 m 232b4l14 0009480 T/SF 58 E Page 6 7- I J z B a, cn -i- & ig B o )PI v) I-

19、 - 5 0 U o 4. B cn I o a W B Z a Edition of January 15, 1988 CEPT T/SF*58*E 87 W 2326434 0009483 9 = 2.2. 2.2. O L.J. 2.3.1. 2.3.2. 2.3.3. 2.3.4. Teleservices (non-voice) ISDN teleservices for non-voice corr2mimication TELETEX SERVICE: - Teletex 64 kbitls - Teletex 2.4 kbit/s TELEFAX SERVICE: - Tele

20、fax 64 kbit/s - Telefax GR3 (PSTN) via TA (9.6 kbit/s) - Telefax GR4 (PSTN) via TA (9.6/14.4? kbit/s) VIDEOTEX SERVICE: - Videotex 64 kbit/s - Videotex 1.2 kbit/s MHSS SERVICE: - MHSS 64 kbit/s - MHSS via TA (speed?) SERVICES YET TO BE DEFINE AS FOLLOWS FOR FURTHER STUDY: - Teleconference - Computer

21、 conference - Telewriting - Teleaction - Surveillance - Document transport and conversion architecture - Audiographic 64 kbit/s - Audiovideographic 64 kbit/s - EFT Data transmission services Bearer services in the ISDN for non-voice cornmimication - 64 kbit/s circuit mode, unrestricted demand - 64 k

22、bit/s circuit mode, usable for 3.1 kHz audio transfer - 64 kbit/s circuit mode, unrestricted permanent - 64 kbit/s circuit mode, usable for 3.1 kHz audio peimanent - 384 kbit/s circuit mode, unrestricted permanent - 1,920 kbitls circuit mode, unrestricted permanent - “B” channel packet mode, switche

23、d virtual circuit (SVC) - “D” channel packet mode, switched virtual circuit (SVC) - “D” channel packet mode, switched connectionless (datagram) - “By channel packet mode, permanent virtual circuit (PVC) - “D” channel packet mode, permanent vistual circuit (PVC) T/SF 58 E Page 7 ClassiJication of ISD

24、N bearer services (circuit switched mode) - - ClassiJication of ISDN bearer services (packet switched mode) - “B” channel packet mode, switched virtual circuit (SVC) - “D” channel packet mode, switched virtual circuit (SVC) - “D” channel packet mode, switched connectionless (datagram) ClassiJication

25、 of ISDN bearer services (leased mode) - 64 kbitls circuit mode, unrestricted pesmanent - 64 kbit/s circuit mode, usable for 3.1 kHz audio permanent - 384 kbit/s circuit mode, unrestsicted permanent - 1,920 kbit/s circuit mode, unrestricted permanent - “B” channel packet mode, permanent virtual circ

26、uit (PVC) - “Dy channel packet mode, permanent virtual circuit (PVC) 64 kbitls circuit mode, unrestricted demand 64 kbit/s circuit mode, usable for 3.1 kHz audio transfer Edition of January 15, 1988 CEPT T/SF*58*E 87 = 232b4l14 0009482 O = TISF 58 E Page 8 2.4. Supplementary services (general) 2.4.1

27、 IdentiJicaton of supplementary services for bearer services and teleservices operating in circuit switched mode 2.4.1.1. Supplementary services applicable for international services - Closed user group - Incoming international calls barred - Calling line identification - Calling line identificatio

28、n restriction - Called line identification - Credit card calling - Date and time record - Lecture call (FS) - Delivery confirmation - Terminal selection - Universal access number b (FS) - User to user signalling - Multi-address calling b (FS) - Logging of incoming calls - Terminal identification (TI

29、D) - Direct dialling in (DDI) - Sub-addressing 2.4.1.2. Supplementary services which may be implemented nationally - Number selection barred - Direct call - Selective direct call drive - Abbreviated address calling - Line hunting/group number - Connect when free - Waiting allowed - Redirection of ca

30、lls - Closed user groups with outgoing access - Closed user groups with incoming access - Outgoing calls barred - Outgoing international calls barred - Incoming calls barred - Incoming calls barred within a closed user group - Outgoing calls barred within a closed user group - Charge advise - Charge

31、 transfer - Reverse charging - Reverse charging acceptance - Booked cail - Malicious call identification - Call hold - Call waiting - Centralised distribution of recorded private information - Centralised PBX facilities - Change of service during an established call - Codelspeed conversion - Complet

32、ion of calls to busy subscribers - Directory enquiries, automatic - Diversion service - Editing a Edition of January 15, 1988 o O 0 2.4.2. 2.4.2.1 /SF 58 E Page 9 - Fault reporting service - Freephone service (the SF1 ISDN group wants this function for non-voice communication-the name/ - General dea

33、ctivation - General telecoms information - Operator access to and control of supplementary services - Out of area lines - Priority selection - Repeat last call - Store and fonvard - Delayed delivery - Itemased bill - Trafic statistics - Bilateral closed user group - Bilateral closed user group with

34、outgoing access - On-line facility parameter registration/cancellation - DTE inactive registration/cancellation - Date and time indication - RPOA selection Note: The supplementary services - Lecture call - Universal access number - Multi-address calling The supplementary services - Charge transfer -

35、 Freephone service (the green number) Ideiitijcatioii of supplementary services for bearer services atid teleservices operatiiig iii packet switched niode Supplementary services applicable for international services - Flow control parameter negotiation - Throughout class negotiation - Incoming inter

36、national calls barred - Closed user group - One way logical channel, outgoing - Fast select request - Fast select acceptance - Credit card calling - Date and time record - Packet delivery conrmation - Closed user group selection - Transit delay selection and indication - Logging of incoming calls -

37、Terminal identification (TID) - Terminal selection - User to user signalling - Calling line identification - Called line identification definition of the service must be changed) - Lecture call b (FS) - Universal access numbers b (FS) - Multi-address calling (FS) are listed as international and nati

38、onal services. Further study is required for the international status of these services. may be identical. Further study is required. - Lecture call b (FS) - Universal access number b (FS) Edition of January 15, 1988 T/SF 58 E Page IO 2.4.2.2. Supplementary services which may be implemented national

39、ly - Extended packet sequence numbering - Non-standard default window size - Non-standard default packet size - Default throughout class assignment - Packet retransmission - Incoming calls barred - Outgoing calls barred - Outgoing international calls barred - One way logical channel, outgoing - One

40、way logical channel, incoming - Closed user group with incoming access - Incoming calls barred within a closed user group - Outgoing calls barred within a closed user group - Bilateral closed user group - Bilateral closed user group with outgoing access - Reverse charging request - Reverse charging

41、acceptance - Charge information - Redirection of calls - Hunt group/group number - Booked call - Centralised distribution of recorded private information - Centralised PBX facilities - Code conversion - Directory enquiries, automatic - Diversion service - Fault reporting service - General telecoms i

42、nformation - Out of area lines/permanent sub number - Priority selection - Store and forward - Delayed delivery - Itemased bill - Trafic statistics - Multilink procedure - Direct call - On-line facility registration - D-bit modification - Local charging prevention - Network user identification - Ext

43、ended frame sequence numbering - RPOA selection - Bilateral closed user group selection - Abbreviated address calling - Call redirection notification - Called line address modified notification - Closed user group with outgoing access selection Note. The supplementary services - Lecture call - Unive

44、rsal access number - Lecture call b (FS) - Universal access numbers/wide area service b (FS) are listed as international and national services. Further study is required for the international status of these services. , Edition of January 15, 1988 CEPT T/SF*58*E 87 2326434 0009485 b TfSF 58 E Page 1

45、1 3. PROVISION OF EXISTING TELEMATIC SERVICES IN THE ISDN 3.1. General guidance These are strategic guidelines for the introduction of existing services in the ISDN. The implementation is strictly a national matter. However, a measure of Co-ordination is necessary internationally in order to provide

46、 users worldwide with attractive telecommunication services, appropriate intercommunication possibilities and thereby to ensure financial success for the service providers. Any existing service introduced in the ISDN should have immediate access to the same service on existing networks. There should

47、 be minimum changes in the user access procedures. Any transition from existing to future international tariffs and accounting should be orderly. The suggested provisional list of priorities for the implementation of existing services in the ISDN, is: 1. TELETEX, TELEFAX AND VIDEOTEX 2. DATA TRANSMI

48、SSION 3. MHSS It is stressed once again that the priority of implementation is a national matter but it has significant international relevance. Simultaneous implementation of existing services in the ISDN in all countries is deemed necessary and efforts should be made to achieve this goal. Edition

49、of January 15, 1988 CEPT T/SF*58*E 87 m 232b4L4 000748b 8 m T/SF 58 E Page 12 3.2. Teletex DEFINITION AND DESCRIPTION OF THIS TELEMATIC SERVICE IS CONTAINED IN THE F-SERIES OF RECOMMENDATION IN THE CCITT F 3 I Z cn Z V) 0 a n - T “I n n- v) 4% 2 I- V) m. I- W n c) z O W 0 U W cn 5 X W t- W I W I- - Edition of January 15, 1988 CEPT T/SF*58*E 87 m 2326434 0009487 T m T/SF 58 E Page 13 3.2.1. International supplemeiitary services for Teletex - Closed user group - Logging of incoming calls - Terminal selection - User to user signalling - Calling line identification