1.1 In the land mobile telephony service, the Home Public Land Mobile Network (HPLMN) will know the location of all operational mobile stations for which it is the home registered network, when the station is operating within its HPLMN or has roamed in accordance with the principles contained in ITU-T Recommendations of the Q.1000 series. 1.2 The Visited Public Land Mobile Network (VPLMN) will be able to access and record the necessary details of any mobile station which has roamed and registered with it, such that it can forward all necessary billing information to the HPLMN. 1.3 Mobile stations will only be able to roam to another Public Land Mobile Network (PLMN): ? upon the conclusion of a bilateral agreement between PLMNs; ? upon the granting by the HPLMN of the option to roam to the mobile station. 1.4 As part of the bilateral agreement, the HPLMN should undertake to pay the VPLMN the charges incurred by the HPLMN registered mobile subscribers. 1.5 Examples of the application of the charging and accounting principles, set out below, for various call routing scenarios are given in Annex A.
ITU-T D.93-2003由国际电信联盟 IX-ITU 发布于 2003。
ITU-T D.93-2003 在中国标准分类中归属于: M02 经济管理。
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