1、 - STD-ITU-T RECMN E.154-ENGL 31778 9 4862593 Ob48493 T4T INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STAN DARD IZATION SECTOR OF TU EA 54 (03/98) SERIES E: OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS Operation, numbering, routing and mobile se
2、rvices - International operation - Operation of international telephone services International shared cost service ITU-T Recommendation E.154 (Previously CCITT Recommendation) ITU-T E-SENES RECOMMENDATIONS OVERALL NETWORK OPERATION, TELEPHONE SERVICE, SERVICE OPERATION AND HUMAN FACTORS OPERATION, N
3、UMBERING, ROUTING AND MOBILE SERVICES INTERNATIONAL OPERATION Definitions General provisions concerning Administrations General provisions concerning users E. 1 00-E. 103 E. 104-E. I 19 E. 120-E. 139 - Operation of international telephone services E.14-E.159 Numbering plan of the international telep
4、hone service ,International routing plan Tones in national signalling systems Maritime mobile service and public land mobile service OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE Charging in the international telephone service Measuring and recordi
5、ng call durations for accounting purposes UTILIZATION OF THE INTERNATIONAL TELEPHONE! NETWORK FOR NON- TELEPHONY APPLICATIONS General Phototelegraphy ISDN PROVISIONS CONCERNING USERS QUALITY OF SERVICE, NETWORK MANAGEMENT AND TRAFFIC ENGINEERING NETWORK MANAGEMENT International service statistics In
6、ternational network management Checking the quality of the international telephone service Measurement and recording of traffic Forecasting of traffic Determination of the number of circuits in manual operation Determination of the number of circuits in automatic and semi-automatic operation Grade o
7、f service Definitions ISDN traffic engineering Mobile network traffic engineering TRAFFIC ENGINEERTNG QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, OBJECTIVES AND DEPENDABILITY PLANNING Terms and definitions related to the quality of telecommunication services Models for telecommunication
8、 services Objectives for quality of service and related concepts of telecommunication services Use of quality of service objectives for planning of telecommunication networks Field data collection and evaluation on the performance of equipment, networks and services E. 160-E. 169 E. 170-E. 179 E. 18
9、0-E. 199 E.200-E.229 E.230-E.249 E.260-E.269 E .300-E. 3 19 E.320-E. 329 E.330-E.399 E.400-E.409 E.410-E.419 E.420-E.489 E.490-E. 505 E. 5 06-E. 509 E.510-ES19 E. 520-Es39 E.540-E.599 E.600-E.699 E.700-E.749 E.750-E.799 E. 800-E. 809 E.810-E.844 E.845-E.859 E.860-E.879 E. 880-E. 899 For further deta
10、ils, please refer to ITU-T List ofRecornmendations TTU-T RECOMMENDATION E.154 INTERNATIONAL SHARED COST SERVICE Summary The International Shared Cost Service (ISCS) enables an ISCS customer in one country to be assigned one or more special telephone numbers in other countries which allow ISCS caller
11、s in those countries to call the ISCS customer at a rate equivalent to a national call charge in the country of origin. All other service and call-related charges are paid by the ISCS customer. This Recommendation provides the service description for the International Shared Cost Service (ISCS), alo
12、ng with information on the service ordering process and other service operational aspects. Source ITU-T Recommendation E. 154 was prepared by ITU-T Study Group 2 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the 9th of March 1998. Recommendation E.154 (03/98) i FOREWORD I
13、TLJ (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommuni- cations. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and iss
14、uing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on
15、these topics. The approval of Recommendations by the Members of the IT-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In t
16、his Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may in
17、volve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of thi
18、s Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent
19、database. O ITU 1998 All rights reserved. No pari of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. 11 Recommendation E.154 (03/98) STDmITU-T RECMN E-154-ENGL 3998
20、 48b2591 Ob48495 695 CONTENTS 1 Scope 2 References 3 Definition of terms 4 Service definition 5 Service management . Service ordering - General procedure . Procedures for ISCS access in the country of origin via dialling a national shared cost number (Access method No . 1) Procedures for ISCS access
21、 in the country of origin via intemational direct dialling of a foreign domestic shared cost number (Access Method No . 2) Procedure for ISCS access in the country of origin via dialling a universal international shared cost number (Access Method No . 3) 5.1 5.2 5.3 5.4 5.5 5.6 Operational aspects .
22、 5.7 Data collection 6.1 Announcement for caller . 6.2 6.3 Variable call routing 6.4 Additional customer service statistics Common service management aspects 6 Customers service features . Geographical zone call routing 6.5 Directory assistanceflisting services 7 . Operational provisions 7.1 Service
23、 operational requirements 7.3 Quality of service 7.2 Network management . Annex A - Access Method No . 1 . Annex B - Access Method NO . 2 Annex C - Access Method NO . 3 . Page 1 1 1 2 3 4 4 6 6 7 8 8 9 9 9 9 10 11 11 11 12 12 12 17 20 Recommendation E.154 (03/98) . 111 Recommendation E.154 INTERNATI
24、ONAL SHARED COST SERVICE (Geneva, 1998) 1 Scope This Recommendation provides the service description for the International Shared Cost Service (ISCS), along with information on the service ordering process and other service operational aspects. While this Recommendation only covers shared cost calli
25、ng services provided using the international telephone service (Recommendation E. 105) as the underlying transport mechanism, this does not preclude the same principles being applied or adapted in the future to ISCS using other transport mechanisms, networks or services. In respect of Access Method
26、No. 3, implementation of this service will need to take account of the provisions of supporting D- and E-Series Recommendations. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendatio
27、n. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references
28、 listed below. A list of the currently valid ITU-T Recommendations is regularly published. - CCITT Recommendation E. 105 (1992), International telephone service - ITU-T Recommendation E. 141 (1993), Instructions for operators on the operator-assisted international telephone service. 3 Definition of
29、terms This Recommendation defines the following terms: 3.1 ISCS originating ROA: A Recognised Operating Agency (ROA) in the country of origin of the call which is responsible for ensuring the establishment of access to the international shared cost number in that country. This operator is also respo
30、nsible for ensuring collection of the portion of the call charge payable by the ISCS caller. 3.2 ISCS terminating ROA: The Recognised Operating Agency (ROA) in the country of call termination which is responsible for ensuring the termination of international shared cost service calls to the ISCS cus
31、tomer and is responsible for relations with the ISCS customer concerning the international shared cost service. This operator is also responsible for ensuring collection of the portion of the call charge payable by the ISCS customer. 3.3 ISCS terminating ROA, and is responsible for payment of all ch
32、arges due to that ISCS terminating ROA. ISCS customer: The individual or entity who (or which) obtains an international shared cost service from an 3.4 charge. ISCS caller: The person who places a call to an international shared cost number and pays a portion of the call 3.5 routing number: A number
33、 format specified by the ISCS terminating ROA which identifies the called ISCS customer and the originating country for routing purposes. The intemational shared cost number dialled by the ISCS caller is translated in the country of call origination to this special routing number before the call is
34、transferred to the ISCS terminating ROA. Recommendation E.154 (03/98) 1 4 Service definition 4.1 The International Shared Cost Service (ISCS) enables an ISCS customer in one country to be assigned one or more special telephone numbers in other countries which allow ISCS callers in those countries to
35、 call the ISCS customer at a rate equivalent to a national call charge in the country of origin. All other service and call-related charges are paid by the ISCS customer. 4.2 an ISCS terminating ROA. The international shared cost service is provided by bilateral agreement between an ISCS originating
36、 ROA and 4.3 to the service being made available: The exchange of the following information between the participating ROAs is considered to be essential prior ISCS originating ROAs numbering arrangements; ISCS originating ROAs national charge bands; ISCS terminating and originating ROAs local servic
37、e requirements (operating Code of Practice); bilateral agreement of the payment by the ISCS terminating ROA to the ISCS originating ROA for provision of access; contact points for each of the ROAS in respect of ail general matters relating to ISCS as well as specific contacts for exchange of service
38、 orders, testing and fault reporting. 4.4 specific access methods indicated below: Participating ISCS originating ROAs and ISCS terminating ROAS may choose to adopt any, or all, of the Access Method No. 1 - Access in the country of call origination via dialling a national shared cost number. A numbe
39、r is assigned to the ISCS customer from the available national shared cost numbers in each country from which the ISCS customer wishes to receive ISCS calls. The ISCS caller dials the national shared cost number, which is translated into a routing number and routed to the country of destination. In
40、the country of origin there may exist more than one charge band for shared cost calling. Due to variations in shared cost number structure among countries, it is likely that the assigned number cannot be the same in each country. NOTE - Some countries may use within their national numbering scheme d
41、iffering national prefixes for shared cost numbers which terminate calls within the country and for shared cost numbers which terminate calls in another country. For the purpose of this Recommendation, both are national shared cost numbers. Access Method No. 2 - Access in the country of call origina
42、tion via international direct dialling of a foreign domestic shared cost number. A single domestic shared cost number assigned to the ISCS customer is used to accept shared cost calls from other countries, The ISCS caller dials the international prefix and the country code followed by the called ISC
43、S customers domestic shared cost number, which is translated into a routing number and routed to the country of destination. Access Method No. 3 - Access in the country of call origination via dialling a universal international shared cost number. A unique Universal International Shared Cost Number
44、(UISCrr) that is the same throughout the world is assigned to the ISCS customer. The ISCS caller dials the international prefix followed by the UISCN, which is translated into a routing number and routed to the country of destination. A UISCN facilitates uniform global access to the ISCS customer fr
45、om all ISCS Originating ROAS who choose to offer this feature. The UISCN should be portable, giving ISCS customers the ability to retain their UISCN when changing ISCS service providers. The UISCN access method can only be used where the international shared cost service requested by the ISCS custom
46、er is between two or more countries. Recommendation E.154 (03/98) Table 1 compares some aspects of each of the access methods. Table 1E.154 - Characteristics of access methods Access method No. 1 Country of destination identified in the dialled number One universally unique number No No No. 2 No. 3
47、4.5 Throughout this Recommendation, the terminating ROA is the provider of the international shared cost service to the ISCS customer and is responsible for all relations with the ISCS customer concerning the international shared cost service. The originating ROA is the ROA in the country of origin
48、of the call that is responsible for the establishment of the access to the international shared cost number in that country. Yes Yes No Yes Figure WE.154 - General environment of international shared cost service 5 Service management This clause contains the administrative procedures concerning serv
49、ice ordering, service operation, number assignment, and data collection for each of the three ISCS access methods. The terminating ROA has the responsibility of processing all applications received on behalf of their ISCS customer and will - - obtain numbers requested by the ISCS customer if available or an acceptable alternative; ensure that ISCS customers do not promote their assigned intemational shared cost number before the customer due date; notify the ISCS customer that: a) - international shared cost numbers are intended to allow ISCS callers to call the ISCS customer
