CEPT T SF 64 E-1989 Teleaction Service《遥信业务》.pdf

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1、T/SF 64 E Page 1 Recommendation T/SF 44 (Vienna 1989 (CAC) TELEACTION SERVICE Recommendation proposed by the Working Group T/WG 7 “Services and Facilities” (SF) Text of the Recommendation adopted by the “TelecommuiiicntioIis” Commission : “The European Conference of Postal and Telecommunications Adm

2、inistrations, considering - that Teleaction services already exist, are being established, and are evolving in a number of European countries, - that there is a need for recognised Teleaction service standards, - that there is advantage in currently pursuing a harmonised approach, - that standards i

3、n associated fields (e.g. Alarm Services) are being established currently in other standards bodies, - that there is an urgent need to consider the provision of Teleaction services over ISDN, - that there is a trend in Europe to liberalise the supply of terminals, recommends - that the following ser

4、vice definition be adopted as the basis for the standard for the Teleaction services in Europe, - that the items identified for further study and resolution be pursued, or drawn to the attention of the relevant O bodies, as a matter of urgency.” r Edition of September 15, 1989 -. r- - CEPT T/SF*b4*E

5、 89 m 2326414 O009533 9 m T/SF 64 E Page 2 Contents 1. DEFINITION,. . 2 2. DESCRIPTION 2 2.1. General Description . 2 2.2. SpecificTerminology 3 2.3. Qualifications . 3 3. 3.1. 3.2. 3.2.1. 3.2.2. 3.2.3. 3.3. 3.3.1. 3.3.2. 3.3.3. 3.4. 3.4.1. 3.4.2. 3.5 PROCEDURES 4 Provision/Withdrawal 4 Normal Proce

6、dures . 4 Activation/Deactivation/Registration 4 Operation . 4 Interrogation 6 Exception Procedures 6 ActivationlDeactivation . 6 Operation . 6 Interrogation/Editng 6 AiternativeProcedures. . 6 Activation/l)eactivation . 6 Operation . 6 Verification 6 4. NETWORK CAPABILITIES FOR CHARGING . 6 5. INTE

7、RWORKINGREQUIREMENTS. . 6 6. INTERACTION WITH OTHER SUPPLEMENTARY SERVICES . 6 Appendix 1 : NETWORK OPTIONS 8 1. DEFINITION The Teleaction service is a telecommunication service providing a communication and allied processing service that sustains a low bit rate data exchange, used for the: - monito

8、ring - indicating - controlling and - verifying of remote: - events - operations and - measurements 2. DESCRIPTION 2.1. General Description 2.1.1. 2.1.2. The Teleaction service provides the capabilities of a telecommunications network that sustains the exchange of low bit rate digital information. D

9、ata transmission shall be two-way simultaneous, two-way alternate or one-way dependent on the appli- cation requirement. The required directions of transmission are continuously available during the informa- tion transfer phase. A Teleaction service will normally interconnect a number of end users (

10、see 2.2.) to one or more receiving/ controlling centres (see 2.2.) such that messages from one end user will be conveyed to one or more receiving/controlling centres and/or messages received by a receiving/controlling centre will have come from a number of end users. The transmission of control/moni

11、toring messages in the reverse direction is also a requirement, Transmission delay shall conform to the delay categories of Table 1 (TISF 64) (under 3.2.l.h), as appropriate to the service application. 2.1.3. 2.1.4 r- o Edition of September 15, 1989,- CEPT T/SF*b4*E 89 W 2326414 0009532 O W 1 2.1.5.

12、 2.2. 2.2.3. 2.2.4. 2.2.5. 2.2.6. 2.2.7. 2.2.8. 2.3. T/SF 64 E Page 3 ENVISAGED APPLICATIONS are: - Alarm Indication, for example: burglar or re alarm (form end users premises) flood (to end users premises) personal alarm - Meter Reading, for example: elect rici ty gas water electricity load control

13、 reservoir level control building management - Simeillance, for example ; to be added - Remote Control of Teclinical Devices, for example: Specific Terminology A NETWORK PROVIDER (normally a PTT Administration) is the one responsible for the installation and maintenance of the Teleaction service net

14、work excluding (possibly) the end users terminal equipment. An END USER is the one to whom an application service is provided, or who is affected by that application service (e.g. load control). Note. End User to end user connections (via the TCU) are to be defined. A SERVICE PROVIDER (SP) is one wh

15、o uses the Teleaction network to provide application service to the end user. The SP wili either be the network provider or the organisation responsible for one or more of the receiving/controlling centres. - More than one SP or one type of service application may be available on a single Teleaction

16、 service An END USER TERMINAL (EUT-see Figure 1 (T/SF 64) (or REMOTE STATION) is a device (or the location of a device) that: - generates information, on the basis of local conditions or by interrogation, and presents that information for transmission across the Teleaction network to one or more obj

17、ective addresses (receiving/controlling centres), network. - receives information from the Teleaction network in order to affect local conditions. A SERVICE PROVIDER TERMINAL (SPT-see Figure 1 (T/SF 64) (or a RECEIVING/CONTROL- LING CENTRE, REMOTE CENTRE or CENTRAL STATION) is a device (or the locat

18、ion of that device) that: - receives information, from one or more EUTs, for data handling and processing in accordance with the - monitors EUTs on the network, generates control messages and information requests, and presents that A MONITORING CENTRE is a remote centre in which the status of the Te

19、leaction service is (and supported services are) controlled and monitored. This may be part of a Receiving Centre, or another centre, e.g. PTT. TELEACTION ACCESS CHANNEL: This is the transmission path between the EUT and the Teleaction supporting network. TELEACTION DISTRIBUTION CHANNEL: This is the

20、 transmission path between the SPT and the Teleaction supporting network. service offered by the service provider application, information for transmission to one or more EUTs. Qualifications The access network options for the Teleaction service are: - dedicated communication channels (including der

21、ived channels), - Private Circuit, and the following subject to study: - other Note. The technical options of ISDN and Fibre must be taken up for study as a matter of urgency, to ensure the ready availability of practicable and economical interfaces for an integrated Teleaction network. - ISDN r- P

22、-2;eptember 15, 1989 /-p- v CEPT T/SF*b4*E 89 W 2326434 0009533 2 W T/SF 64 E Page 4 3. 3.1. 3.1.1. 3.1.2. 3.1.3. 3.2. 3.2.1. 3.2.2. PROCEDURES Provision/Withdrawal The Teleaction service shall be provided in response to: a) A prior arrangement between a Service Provider and Teleaction network provi

23、der. (This implies an b) A prior arrangement between an End User and the Teleaction network provider. The service provider is responsible for ensuring that all other network providers (where they are involved) make the necessary provision, to secure the total Teleaction service provision for data tr

24、ansmission between the required end user and the required receiving/controlling centre. Confirmation of provision to the end userlservice provider shall imply the provision of all concatenated networks, network elements and functional components, necessary to provide the Teleaction service. The tran

25、smission system shall be designed such that all operations associated with adding, changing or removing services apply to only those end users/service providers desiring the Teleaction service change. agreement between an End User and Service Provider.) Normal Procedures Activation/Deactivation/Regi

26、stration a) The Teleaction Access Channel is activated by: i) Provision (this implies a dedicated transmission path). Thus the EUT will find the access channel continually available following provision. ii) Confirmation by the network of the Teleaction Distribution Channel: Le. where it is necessary

27、 for the distribution channel to be active prior to activation of the access channel. b) The Teleaction Distribution Channel is activated by: i) Provision (i.e. this channel is normally continually available). ii) The Teleaction Supporting Network (TSN) as and when the EUT requests a call establishm

28、ent. The Teleaction Distribution Channel is activated by the TSN on receipt of a channel request by an EUT. It may be necessary to inhibit data transmission from the EUT until a distribution channel is established. iii) An SPT. Operation a) Establishment of Communication: (see Provision). Informatio

29、n received from the EUT (and SPT) shall indicate the required objective address by: i) path of entry ii) other (to be defined b) Information Characteristics: The information structure may consist of: - single bits - groups of bits - octets of bits - groups of octets - point to point - point to multi

30、point - multipoint to point d) Mode of Operation: The operation modes shall be: - one way - two-way alternate - two-way simultaneous e) Transmission of Information conveying the state of the EUT may be: - continuous - periodic - by exception (when the state changes) - by interrogation Note. A separa

31、te and continuous monitoring signal may exist on the network. c) Communication Configuration shall be: Edition of September 15, 1989- T/SF 64 E Page 5 Availability of overall system Availability during any hvo-week period f) Transmission Control: If transmission is not continuous, transmission shall

32、 be controlled by: - the EUT - the SPT - the transmission system g) The Transfer of Information between an EUT and SPT shall not be blocked or corrupted by any other normal transmission of the transmission system. Transmission facilities shared with non-Teleaction services, or shared between differe

33、nt types of Teleaction service, shall be so arranged that operation and maintenance of the alternative services does not prevent the transmission system from meeting the Teleaction service requirements specified in this Recommendation. Likewise, Teleaction service opera- tion and maintenance shall n

34、ot interfere with the non-Teleaction and other services sharing the same transmission plant. h) Information Transmission Delay: The time delay for the transmission of information across the Teleaction service network (see 2.1.4.) shall not exceed the limits of Table 1 (T/SF 64). Delay shall be measu

35、red from the time that the EUT (or SPT) changes state until the new state is reported to the SPT (or EUT). 99.55 99.8 99.99 90 91.5 99.9 Delay Category Transmission Delay (in seconds) Arithmetic Mean of all Transmissions 120 60 20 5 Upper 95 Percentile for all Transmissions 240 80 30 15 Maximum Acce

36、ptable Delay 480 120 50 20 Table 1 (T/SF 64). Transmission Delay. Note 1. The delay may be different in each direction of transmission. Note 2. The network provider should quote the delay options available for each type of service application available on the network. k) Responsibility: Responsibili

37、ty for the transfer of information across the Teleaction service network shall fall upon the Teleaction Network Provider. 1) Reliability: It should be possible to use one or more transmission systems, or one or more communica- tion channels in one transmission system, between an EUT and an SPT. m) S

38、pare Paragraph: n) Availability: The minimum availability of a Teleaction service connection between EUT and SPT shall be as specified in Table 2 (T/SF 64). Teleaction Availability (in percent) The minimum availability of a section of the Teleaction transmission system affecting sixteen or less stat

39、ions may be that for the next lower grade of availability, provided that the availability of the sum of all sections meets the correct grade. Note. The network provider should quote the availability options available for each type of service application available on the network. p) Security: i) No u

40、nauthorised access to end user data shall be allowed while it is in transit across, or storage in, the Teleaction network. ii) Security procedures shall be available to police unauthorised data traffic, and inhibit data from being presented from an unauthorised source. iii) The Teleaction service sh

41、all provide measures to prevent or detect deliberate attempts to block or interfere with the transmission of information. iv) The Teleaction network and terminating equipment shall have a degree of resistance to abuse and tampering, to be dened. q) Interface: Standardized interfaces according to CCI

42、TT V- or X-series Recommendations should be used. # Eitionaf September 15, 1989 7 -. CEPT T/SF*b4* 89 = 232b434 0009535 b T/SF 64 E Page 6 3.2.3. 3.3. 3.3.1. 3.3.2. 3.3.3. 3.4. 3.4.1. 3.4.2. 3.5. Interrogation: (The end user to interrogate the Service Provider: to be defined.) Exception Procedures A

43、ctivation/Deactivation a) Deactivation: The end user shall be advised if the service at any time becomes: - unavailable - not active Operation a) Abnormal signals and conditions which prevent the correct operation of the Teleaction network shall result in a fault signal. b) An alarm or fault signal

44、shall be transmitted to the SPT in the event of failure of the connection between the EUT and SPT. The time to send this signal shall meet the periods cited in Table 1 (T/SF 64). (To be reconsidered.) c) For service applications having automatic monitoring, the maximum period from the time a fault d

45、evelops in the Teleaction network until the fault information is reported to the SPT and/or monitoring centre shall be as classified in Table 3 (T/SF 64). Class TI T2 T3 T4 Fault Report Delay I Maximum Period I25h 165mI 90s 120s I Table 3 (T/SF 64). Fault Report Delay. Note 1. The Network provider s

46、hould quote the fault report delay options available for each type of service application available on the network. Interrogation/Editing To be defined. Alternative Procedures To be defined. Activation/Deactivation Operation Verification (By the end user to verify service provided: to be defined.) 4

47、. NETWORK CAPABILITIES FOR CHARGING Charging is a national matter. 5. INTERWORKING REQUIREMENTS To be defined. 6. INTERACTION WITH OTHER SUPPLEMENTARY SERVICES To be defined. Teleaction services may use the following supplementary services : Date and Time Record Code and Speed Conversion Multi-addre

48、ss calling Booked Call Store and Forward transmission Delayed delivery Sub-addressing Fault reporting Trafic statistics Redirection of calls Edition of September 15, 1989- CEPT T/SF*b4*E 89 2326414 0009536 I End User Terminal Remote Station Teleaction Functional Components -Teleaction Service Nehvor

49、k- Figure 1 (T/SF 64). The Teleaction Network. F-eptember 15, 1989 7 *- TJSF 64 E Page 7 Service Provider Terminal Remote Centre Receiving/ Controlling Centre CEPT T/SF*b4*E 89 m 2326434 0009537 T m T/SF 64 E Page 8 Appendix 1 NETWORK OPTIONS 1. 2. 2.1. 2.2. 2.3. INTRODUCTION Some network options identified below require urgent consideration if Administrations are to offer Tele- action service over those options such as ISDN. THE TELEACTION NETWORK OPTIONS The Access Network options are: a) Subscriber analogue loops of the PSTN (including derived chan:iels) b)