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    ITU-T E 213-1993 Telephone and ISDN Numbering Plan for Land Mobile Stations in Public Land Mobile Networks (PLMN)《公众陆地移动网(PLMN)中的陆地移动站的电话和综合业务数字网(ISDN)编号计划》.pdf

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    ITU-T E 213-1993 Telephone and ISDN Numbering Plan for Land Mobile Stations in Public Land Mobile Networks (PLMN)《公众陆地移动网(PLMN)中的陆地移动站的电话和综合业务数字网(ISDN)编号计划》.pdf

    1、INTERNATIONAL TELECOMMUNICATION UNION)45G134 % TELECOMMUNICATIONSTANDARDIZATION SECTOROF ITU4%,%0(/.%G0G0.%47/2+G0G0!.$G0G0)3$./0%2!4)/. G0G0.5-“%2). G0G02/54).!.$G0G0-/“),%G0G03%26)#%4%,%0(/.%G0G0!.$G0G0)3$.G0G0.5-“%2).G0G00,!.&/2G0G0,!.$G0G0-/“),%G0G034!4)/.3G0G0).G0G005“,)#,!.$G0G0-/“),%G0G0.%47/

    2、2+3G0 0,-.G9)45G134G0G0RecommendationG0G0% (Extract from the “LUEG0“OOK)NOTES1 ITU-T Recommendation E.213 was published in Fascicle II.2 of the Blue Book. This file is an extract from theBlue Book. While the presentation and layout of the text might be slightly different from the Blue Book version,

    3、thecontents of the file are identical to the Blue Book version and copyright conditions remain unchanged (see below).2 In this Recommendation, the expression “Administration” is used for conciseness to indicate both atelecommunication administration and a recognized operating agency. ITU 1988, 1993A

    4、ll rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic ormechanical, including photocopying and microfilm, without permission in writing from the ITU.Fascicle II.2 - Rec. E.213 1Recommendation E.213Fascicle II.2 - Rec. E.213TELEPHONE AND

    5、 ISDN NUMBERING PLAN FOR LAND MOBILE STATIONSIN PUBLIC LAND MOBILE NETWORKS (PLMN)1 Basic requirements1.1 It should in principle be possible for any subscriber of the international telephone network or ISDN to call anysubscriber of a public land mobile network.Note Other constraints may exist (e.g.,

    6、 charging constraints) so that this condition cannot be met in practice.1.2 The numbering should be composed in such a way as to allow standard telephone or ISDN charging andaccounting principles to be used.1.3 It should be possible for each Administration to develop its own independent numbering pl

    7、an for mobilestations.1.4 The numbering plan should not prohibit the development of interconnected public land mobile networks toform service areas as defined in Recommendation Q.70.1.5 It should be possible to change the international mobile station identity (see Recommendation E.212) withoutchangi

    8、ng the telephone or ISDN number allocated to the station and vice versa.1.6 It should be possible, in principle, for mobile subscribers to roam without constraints among PLMNs.1.7 The numbering plan should take into account human factors such as the compatibility with user diallingprocedures for the

    9、 most predominant network in each country, i.e. the public switched telephone network (PSTN), andthe compatibility between adjacent countries as well.1.8 Different numbers may be allocated for interconnection with other types of networks than the PSTN e.g.,PDNs in order to meet specific numbering re

    10、quirements within these networks.2 National (significant) mobile numberThe national (significant) mobile number could have the following form depending upon the way in which theland mobile numbering plan is integrated with the telephone numbering or ISDN plan:i) The land mobile numbering plan might

    11、be fully integrated with the telephone numbering or ISDN plan. Inthis case the mobile stations will be allocated a subscriber number as defined in Recommendation E.160, 5. The national (significant)mobile number then consists of the trunk code or national destination codeallocated to the numbering a

    12、rea corresponding to the home area of the mobile station followed by thesubscriber number allocated to it.ii) The public land mobile network might be regarded as a separate numbering area within the telephonenetwork or the ISDN. In this case the national (significant) mobile number will consist of t

    13、he trunk code ornational destination code allocated to the PLMN and the subscriber number within the PLMN.3 Mobile station roaming number3.1 The mobile station roaming number is a number allocated to a land mobile station for the purpose of reroutingcalls to that station when it has roamed out of th

    14、e area covered by the PLMN maritime switching centre MSC) inwhich the station is permanently registered.3.2 The composition of the mobile station roaming number may vary depending upon where the mobile station istemporarily located and depending upon the method by which it is allocated.2 Fascicle II

    15、.2 - Rec. E.2133.3 One acceptable method for allocating mobile station roaming numbers is for the foreign PLMN (i.e. thenetwork in which the mobile station is currently located) to allocate a temporary national (significant) mobile numberto the visiting mobile station within its own numbering plan.

    16、The mobile station roaming number would thus have thefollowing composition:(country code of the country in which the foreign PLMN is located)1)+ (temporary national (significant)mobile number).The mobile station roaming number is transferred to the home PLMN of the mobile station.Note - A second met

    17、hod has been identified where the foreign PLMN uses a separate numbering plan forvisiting mobile stations where the number used is composed of a prefix indicating a foreign station followed by thecountry code of the country in which the station is permanently registered and the national (significant

    18、) mobile numberin its home network.The home PLMN of the mobile station must in this case inform the foreign PLMN about the mobile station roamingnumber.The possible use of this method requires further study considering that it may impose a requirement for digit capacitygreater than 12 digits for the

    19、 PSTN or 15 digits for the ISDN.3.4 It may be advantageous (but it is not obligatory) for the roaming number to be kept secret from both the fixedand/or mobile subscriber. In this situation, the number would only be used within PLMNs and the PSTN/ISDN forrerouting of calls to a mobile station that h

    20、ad registered with a visited PLMN. The number would then not be used fordirect routing of a call from a fixed (or mobile) subscriber to the mobile station.3.5 This approach would allow the reallocation to another mobile station of the roaming number as soon as thestation to which the roaming number

    21、had been originally allocated had left the visited PLMN. It will of course bedesirable for a call to the roaming number, originating from an ordinary subscriber, to be rejected by the visited PLMN.In order to achieve this rejection the necessary signalling facilities and mechanisms at the mobile swi

    22、tching centres willneed to be provided.3.6 The implementation of the above approach, of barring the roaming number to fixed and/or mobile subscribers,should be a matter of bilateral agreement.4 Number analysisIn respect to routing, charging and accounting, the requirements on number analysis given inRecommendation E.163 for the PSTN and Recommendation E.164 for the ISDN should also be met for calls to mobilestations._1)May not be required in all cases, e.g. the two PLMNs are located in the same country or in an area with an integrated numberingplan.


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