1、CCITT THE INTERNATIONAL TELEGRAPH AND TELEPHONE CONSULTATIVE COMMITTEE TELEPHONE NETWORK AND ISDN OPERATION, NUMBERING, ROUTING AND MOBILE SERVICE E.105 (08/92) INTERNATIONAL TELEPHONE SERVICE Recommendation E.105 CCITT RECMN*E*LO5 92 48b259L 0574349 TOO FOREWORD The CC” (the International Telegraph
2、 and Telephone Consultative Committee) is a permanent organ of the International Telecommunication Union (ITV). CC is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The Plena
3、ry Assembly of CC which meets every four years, establishes the topics for study and approves Recommendations prepared by its Study Groups. The approval of Recommendations by the members of CCI” between Plenary Assemblies is covered by the procedure laid down in CCJT Resolution No. 2 (Melbourne, 198
4、8). Recommendation E.105 was prepared by Study Group I and was approved under the Resolution No. 2 procedure on the 4th of August 1992. C(sITT NOTES 1) telecommunication Administration and a recognized private operating agency. 2) In this Recommendation, the expression “Administration” is used for c
5、onciseness to indicate both a A list of abbreviations used in this Recommendation can be found in Annex A, O IT 1992 Ail rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without per
6、mission in writing from the ITU. CCITT RECMN+E.L05 92 = 4862571 0574350 722 Recommendation E.105 INTERNATIONAL TELEPHONE SERVICE 1 General provisions 1.1 These provisions define the operation of the international telephone service. 1.2 The telephone service is a public telecommunication service prim
7、arily intended for the exchange of information in the fom of speech, whereby users can communicate directly and temporarily between themselves in conversational mode, and should be provided in accordance with the International Telecommunication Regulations i, and the relevant CC Recommendations. The
8、 international telephone service can also support a number of non-voice services or applications such as facsimile and data transmission. Such applications are not dealt with specifically by this Recommendation, but, in principle, they should not degrade the quality of the telephone service. 1.3 Fur
9、ther provisions concerning operational aspects, such as traffic engineering, numbering, routing, quality of service, interconnection with mobile services and network management may be found in other E-Series Recommendations. 1.4 Provisions concerning accounting and charging in the telephone service
10、may be found in the D-Series Recommendations. 1.5 supplementary services may be found in the G-, I-, M- and Q-Series Recommendations. Provisions concerning technid aspects of providing and maintaining the telephone service and associated 1.6 For the definition of terms concerning the international t
11、elephone service, see Recommendation E.100 2. 2 Operation of the international telephone service The telephone service is operated - automatically; - semi-automatically; - manually. It is strongly recommended that the service should be provided on a fully automatic basis, and it should be possible f
12、or users to reach one another by fuily automatic selection. 2.1 Automtic operation 2.1.1 without the assistance of an operator. In automatic operation, the user diais or keys the called number and the call is established automatically 2.1.2 To establish an inkrnational call in the automatic service,
13、 the user shall select: - - the access code to the international network, which is fixed according to national requirements; the telephone country code, m accordance with Recommendation E.164 3; - the national (significant) number, in accordance with Recommendation E.164 3. 2.1.3 with Recommendation
14、s E.180 4, E.181 5, E.182 6, E.183 7 and E.184 8. During the call Set-up phase of the call, progress signals, tones and announcements should be in accordance Recommendation E.105 (OW) 1 CCITT RECMNUE-LOS 92 i1862591 0574351 669 m I 4 Duration of service 2.2 Semi-automatic operation 4.1 In principle,
15、 the automatic telephone service shall be continuously available. With semi-automatic operation, the call is established by the international operator who receives the call request and sefs up the cail by dialling or keying the called number, and, before or after confming that the cailed and calling
16、 parties are in conversation, may leave the circuit. Supervision of the call is carried out automatically, but the operator may be required to clear the connection. I 2 Recommendation E.105 (0892) 2.3 Manual operation 2.3.1 With manual operation, a call is established over an intedonal link by the o
17、riginating and terminating international operators. Once the has been set up and the cailed and calling parties are in conversation, at least one of the operators, preferably the originating operator, will remain in control of the call and will monitor its progress until completion Calls established
18、 manually may be extended to other countries on an additional manual circuit or by the semi-automatic service. 2.4 Telephone service (Recommendation E. 14 1 9). See also Recommendation E. 140 101. Detailed procedm on operator assisted calls are contained in the Insmictions for the International 2.5
19、In principle, the duration of manual and semi-automatic calls should not be limited. However, in accordance with the Telephone Instructions, the duration of calls may be limited in certain exceptional situations, including where precedence is required for distress (emergency) calls, or in the case o
20、f congestion or intemption on any route. 2.6 the P-Series Recommendations. Administrations should ensure that speech quality and speech transmission standards are in accordance with 2.7 The procedures for the measurement of chargeable call duration should be in accordance with Recommendations E230 l
21、i, E231 12, E.232 13, E.260 14 andE.261 lq. 2.8 dations E.170 16, E.171 17, E.172 18 and E.173 19. International telephone routing pians should be in accordance with the provisions of Recommen- 3 International circuits and routes 3.1 directly interconnected. The networks of countries operating the t
22、elephone service should be, as far as reasonable and practicable, 3.2 telephone routes, and, to the extent necessary and possible, upon secondary routes. For each relation, the Administration concerned shall, by mutual agreement, decide on one or more primary 3.3 In this respect, the Administrations
23、 shall conform as far as possible with the principles recommended by the CCIT as regards the constitution and the maintenance of international circuit and installations, as specified in M-Series Recommendations. 3.4 with the G-Series Recommendations. Administrations should ensure that the provision
24、of the international telephone connections is in accordance 4.2 To the extend practicable, semi-automatic and manual services should also be continuously available. 4.3 In accordance with Article 36 of the Insuuctions for the International Telephone Service 20, where an exchange or route is not open
25、 permanently, the service should be extended for a reasonable period, when needed, to ailow the completion of calk in progress. CCITT RECflN*E*LO5 92 4862591 0574352 5T5 D I 5.1 General 5 Classes of telephone calls 5.1.1 Accepted classes of telephone calls are: a) ordinary private calls; b) service
26、calls, including requests for directory information between operator centres; c) privilege calls; d) government calls, and e) safety of life calls, such as distress calls. The provisions governing the definition and priority of calls are contained in Articles 2 and 5 of the International Telecommuni
27、cation Regulations i and the Instructions for the International Telephone Service 20. 5.2 Service telephone calls 5.2.1 Service telecommunications are defined in Article 2 of the International Telecommunication Regulations i. 5.2.2 The general operational aspects of service telecommunications, are f
28、ound in Recommendation F.17 21. 5.2.3 Service telephone calls are those which relate to the working of the international telephone service (including the provisioning, administration, maintenance or restoration of service between Administrations, and for collection, settlement and other financial ma
29、tters). 5.2.4 Recommendation D. 192 22. The principles for the charging and accounting of service telecommunications may be found in 5.3 Privilege telephone calls In accordance with Recommendation D.193 23, privilege telephone cals may be offered during conferences and meetings of the ITU. Such priv
30、ilege telephone calls are admitted on a reciprocal and optional basis. 6 Restriction on the use of the telephone service 6.1 In general, there should be no restriction on the use of the international telephone service, in accordance with Articles 1 and 3 of the International Telecommunication Regula
31、tions i, and subject to national laws and regulations of the ITU Members concerned. Members may, for example, approve the placing of conditions on the interconnection arrangements or for specific applications. 6.2 In addition, pursuant to Articles 19 and 20 of the International Telecommunication Con
32、vention %l. Members may exercise their rights concerning stoppage of telecommunications and suspension of services in certain exceptional circumstances. 7 Directories and information for users 7.1 dation E.114 25. For the provisions on the supply of lists of subscribers (by directories or other mean
33、s), see Recommen- 7.2 or promulgating directory information, and guidance on how to make effective use of the telephone service. The E. 120-Series 26 Recommendations deal with human factors that should be considered when publishing Recommendation E.105 (08/92) 3 CCITT RECHN*E-LOS 72 W 4862573 057435
34、3 431 7.3 of access to foreign operators), see Recommendation E.115 27. For the general principles applicable to the various methods for users to obtain information (and the barring 8 Mobile services The mobile telephone services can provide access to the international telephone service that is not
35、constrained by the need for direct physical connection to the fixed telephone network. This includes the following mobile applications: - land; - maritime; - aeronautical. 9 Supplementary services in the international telephone service 9.1 The following supplementary services have been standardized
36、by the CCW - International Freephone Service (ES). See Recommendation E.152 1281; - automated international telephone charge card system. See Recommendation E. 1 18 29; - international operator direct calling (Home Country Direct). See Article 207 bis of the Instructions for the International Teleph
37、one Service m. 9.2 In addition, a listing of possible telephone supplementary services may be found in Supplement No. 1 of Fascicle 11.1 of Blue Book 30. This listing includes supplementary services which have international implications and those that do not. 10 international telephone supplementary
38、 services in the ISDN era 10.1 The development of digitai switching, transmission and signalling techniques, and their introduction into the public switched telephone network, and the evolution to the integrated services digital network (ISDN), provides scope for network based service features. The
39、range of supplementary services will depend on the signalling capability in the network, and a number of other factors. Consequently, some services may be offered nationally, but not necessarily internationally. 10.2 described in the 1.250 31 and I.24o-Series 32 of Recommendations respectively. The
40、range of ISDN supplementary services and the “teleservices” to which they relate in the ISDN are 10.3 Recommendation D .232 33. Charging and accounting principles applicable to ISDN supplementary services may be found in 10.4 Supplementary services must be offered together with, or in association wi
41、th, a basic or CCIT-defined telecommunication service. They may supplement or modify such services, but they cannot be offered to subscribers as stand-alone service offerings. 10.5 The following list of ISDN supplementary services may be seen as applicable to the international telephone service. The
42、 lists of ISDN supplementary services below and in 10.6 are not exhaustive and are provided for example only: - Calling Line Identification Presentation; - Calling Line Identification Restriction; - Call Transfer; - Closed User Group; - Conference Call; 4 Recommendation E.105 (OW2) CCITT RECNN*E.LOS
43、 92 ? 4862591 0574354 378 ? - Three-patty Service; - - Connected Line Identification Presentation; - Connected Line Identification Restridon. 10.6 The following ISDN supplementary services are predominantly functions of the destination network, and are unliiely to pass across international boundarie
44、s. However, when these supplementary services are invoked in the destination network, they may affect the service seen by the originator: Call Forwarding (Busy, No Reply, Unconditional, Call Deflection); - callwaiting; - CallHOld; - Multiple Subscriber Number; - LmeHunting. ANNEX A (to Recommendatio
45、n E.105) Alphabetical list of abbreviations used in this Recommendation International freephone service Integrated service digital network References International Telecommunication Regulations, Melbourne, 1988 CCITT Recommendation Definitions of terms used in international telephone operation, Blue
46、 Book, Rec. E. 100, ITU, Geneva, 1988. CCITT Recommendation Numberngplan for the ISDN era, Rec. E.164, ITU, Geneva, 1991. CC Recommendation Technical churacteristics of tones for the telephone service, Blue Book, Rec. E. 180, ITU, Geneva, 1988. CCIT Recommendation Customer recognition of foreign ton
47、es, Blue Book, Rec. E.181, RU, Geneva, 1988. CCIT Recommendation Application of tones and recorded announcements in telephone services, Blue Book, Rec. E.182, ITU, Geneva, 1988. CCIT Recommendation Guiding principles for telephone announcements, Blue Book, Rec. E.183, ITU, Geneva, 1988. CCIT Recomme
48、ndation Indications to users of ISDN terminals, Blue Book, Rec. E.184, ITU, Geneva, 1988. CCIT Recommendation Instructions for the international telephone service, Blue Book, Rec. E.141, ITU, Geneva, 1988. CCIT Recommendation Operator-assisted telephone service, Rec. E.140, ITU, Geneva, 1992. CCIT R
49、ecommendation Churgeable duration of calls, Rec. E.230, ITU, Geneva, 1992. Recommendation E.105 (08/92) 5 CCITT RECMNJE-LO5 92 m 48b259L 0574355 204 m CC Recommendation Charging in automatic service for calls terminating on special services for suspended, cancelled or transferred subscribers, Blue Book, Rec. E.23 1, ITU, Geneva, 1988. CCITT Recommendation Charging for calls to subscribers station connected either to the absent subscribers service or to a device substituting a subscriber
