5i' SECTION 8 MARITIME MOBILE SERVICE Recommendation E.200 OPERATIONAL PROVISIONS FOR THE MARITIME MOBILE SERVICE Introductory Notes 1 Pursuant to Resolutions Nos. Mar2 | (em | 2 and Mar2 | (em | 3 and Recommendation Mar2 | (em | 8 of the World Administrative Maritime Radio Conference [1], the CCITT drew up Recommendations E.200/F.110 and D.90 concerning operational and accounting provisions for the Maritime Mobile Service Radio Confer- ence [2], adopted texts dealing with the basic principles on operating and accounting procedures, leaving the detailed applica- tion of these principles to be covered by CCITT Recommendations. 2 Article 66 (No. 5085) of the Radio Regulations [3] specifies that the provisions of the Telegraph Regulations [4] and the Tele- phone Regulations [4], taking into account CCITT Recommendations, shall apply to radiocommunications in so far as the relevant provi- sions of the Radio Regulations do not provide otherwise. 3 Since, in accordance with Article 69 of the Radio Regula- tions , Article 66 entered into force on 1 January 1981, the provi- sions of this Recommendation were applicable from that date. 4 References commencing with the letters J, K, L and M concern provisions in Divisions J, K, L and M respectively of Recommendation D.90 entitled Charging, accounting and refunds in the Maritime Mobile Service . 5 For the purpose of this Recommendation the term Maritime Mobile Service should be understood to embrace the Maritime Mobile-Satellite Service as well as the MF, HF, VHF and UHF radio media, unless specifically stated otherwise. _________________________ This Recommendation is also included in the Series F Recommendations under the number F.110. 6 Throughout this Recommendation the term Administration means that recognized private operating agency/agencies are included. However, where this term is used in respect of notification by Administrations to the General Secretariat of the ITU, this applies only to recognized private operating agencies that have been authorized by Administrations to carry out such notification. 7 For the purpose of this Recommendation, the terms mobile station and land station should be considered as analogous to ship station and coast station respectively used in the Radio Regula- tions . CONTENTS DIVISION A - General 1 Definitions 2 Order of priority DIVISION B - Radiotelegrams 1 Preparation and handing-in of radiotelegrams 1.1 Plain language 1.2 Indication of station of origin 1.3 Use of accounting authority identification codes by mobile stations 1.4 Time of handing-in 1.5 Address 2 Counting of words 3 Routing of radiotelegrams 4 Transmission of radiotelegrams 4.1 Routine repetition 4.2 Doubtful reception 4.3 Long-distance radiocommunications 4.4 Routine retransmission by mobile stations 4.5 Period of retention of radiotelegrams at land stations 5 Advice of nondelivery 6 Radiomaritime letters 7 Special services 8 Special conditions relating to the maritime mobile-satellite service DIVISION C - Radiotelex 1 General 1.1 Routing of calls 1.2 Information to be supplied, as necessary, by the calling party 1.3 Call duration 1.4 Validity of requests 1.5 Exchange of radiotelegrams by radiotelex 2 Traffic from mobile stations 2.1 Automatic service 2.2 Single-operator service 2.3 Semiautomatic service 2.4 Manual service 2.5 Store-and-forward service 2.6 Procedures 3 Traffic to mobile stations 3.1 Automatic procedure 3.2 Single-operator procedure 3.3 Semiautomatic procedure 3.4 Manual procedure 3.5 Store-and-forward 4 Radiomaritime telex letter 4.1 Definition 4.2 Operational procedures DIVISION D - Radiotelephone 1 General 1.1 Language to be used 1.2 Priority 1.3 Routing of calls 1.4 Information to be supplied by the calling party 1.5 Call duration 1.6 Validity of requests 1.7 Exchange of radiotelegrams by radiotelephony 2 Traffic from mobile stations 2.1 Automatic service 2.2 Single-operator service 2.3 Semiautomatic service 2.4 Manual service 2.5 Store-and-forward 2.6 Procedures 3 Traffic to mobile stations 3.1 Automatic procedure 3.2 Single-operator procedure 3.3 Semiautomatic procedure 3.4 Manual procedure 3.5 Store-and-forward DIVISION E - Radiotelexogram 1 General 1.1 Definition 1.2 Provision of service 1.3 Validity of requests 2 Operational procedures 2.1 Transmission 2.2 Information to be supplied to land station Definition de la cha | ne A3 avec tabulateurs Tab.5 = AP2,6 Tab.1 = AP5 folio a definir sur cette page Pas de tabs speciaux DIVISION A GENERAL 1 Definitions A1 1.1 The controlling operator is the f irst land-based operator handling the radiotelegram, radiotelex call or radiotelephone call in the direction from mobile station. A2 1.2 Accounting authority identification code For the meaning of this term see J2 in Recommen dation D.90. A3 to A20 not allocated 2 Order of priority A21 2.1 The order of priority for comm uni- cations , in the maritime mobile service shall be as follows, except where impracticable in a fully automated system in which, nevertheless, communications described in A22 shall receive prior- ity. A22 a) Distress calls , distress messages and dis- tress traffic ; A23 b) Communications preceded by the urgency sig- nal ; A24 c) Communications preceded by the safety signal ; _________________________ The term communications as used in A21 to A32 means radiotelegrams , radiotelephone calls and radiotelex calls A25 d) Communications relating to radio direction-finding ; A26 e) Communications relating to the navigation and safe movement of aircraft engaged in search and rescue opera- tions; A27 f ) Communications relating to the navigation, movements and needs of ships, and weather observations messages destined for an official meteorological service; A28 g) Radiotelegrams relative to the application of the United Nations Charter (ETATPRIORITE ); A29 h) Government radiotelegrams with priority (ETATPRIORITE ) and government calls for which priority has been expressly requested; A30 i) Ordinary private radiotelegrams and RCT radiotelegrams for which priority has been requested. A30 | fIbis j) Service communications relating to the working of the telecommunication service or to communications pre- viously exchanged; A31 k) Government communications other than those shown in A29, ordinary private communications and RCT radiotelegrams; A32 l) Radiomaritime letters. DIVISION B RADIOTELEGRAMS 1 Preparation and handing-in of radiotelegrams 1.1 Plain language B1 1.1.1 Groups of letters and fig ures from the International Code of Signals are considered as plain language in radiotelegrams. 1.2 Indication of station of origin B2 1.2.1 When, because of duplication of n ames, the name of a station is followed by its call sign, the latter shall be joined to the name of the station by a fraction bar. Examples: OREGONB/FOZOC (not OREGONOZOC ); Examples: ROSEB/FDDOR (not ROSEDDOR ). B3 1.2.2 When a land station retran smits a radiotelegram received from a mobile station , it shall transmit, as office of origin, the name of the mobile station in which the radiotelegram originated as this name appears in the appropriate list of stations, followed by its own name. Where appropriate, B2 shall also apply. B4 1.2.3 In order to avoid any confusion w ith a telegraph office or a fixed station of the same name, the land station may, if desirable, complete the indication of the name of the mobile station of origin by the word SHIP or AIRCRAFT , placed before the station of origin. 1.3 Use of accounting authority identification codes by mobile stations B5 1.3.1 The mobile station operator should, as a sta ndard operating procedure, give the accounting author- ity identification code (AAIC) at the end of the preamble line. If the AAIC is missing, the land station operator should request QRC? 1.4 Time of handing-in B6 1.4.1 In the transmission of radiotele grams originating in a mobile station, the date and time of handing-in at this station are given by two groups of figures in the preamble line, the first indicating the day of the month (1 to 31) and the second consisting of a group of figures (0001 to 2400) indicating the hours and the minutes. B7 1.4.2 The time of handing-in is in dicated in Coordinated Universal Time (UTC). Note - For practical operating purposes, UTC may be con- sidered as equivalent to Greenwich Mean Time (GMT). 1.5 Address B8 1.5.1 The address of radiotelegrams desti ned for mobile stations must be as complete as possible and must include: B9 a) the name or the designation of the addressee, with supplementary particulars, if necessary; B10 b) the name of the mobile station followed, when necessary, by its call sign, the latter joined by a fraction bar to the name of the station as shown in the List of Ship Sta- tions [5]; B11 c) the name of the land station through which the radiotelegram is to be forwarded, as it appears in the appropriate list of stations. B12 1.5.2 If the mobile station does not ap pear in the List of Ship Stations [5], the sender should, if possible, indicate the nationality and route followed by the mobile station. B13 1.5.3 However, the name and call sign requ ired under B10 may be replaced, at the risk of the sender, by particulars of the passage made by such mobile station, indi- cated by the names of the ports or airports of departure and of destination, or by any equivalent indication. B14 1.5.4 Mobile stations may a dd to the name of the office of destination: - the name of the territorial subdivision; and/or - the destination or country. if it is doubtful whether, without such addition, the radiotelegram could be correctly routed without difficulty. B15 1.5.5 The controlling operator retains or d eletes the particulars in B14 or further amends the name of the office of destination as is necessary or sufficient for for- warding the radiotelegram to its proper destination. 2 Counting of words B16 2.1 The word count of the office of ori gin is decisive in the case of radiotelegrams destined for mobile stations, and that of the controlling operator is decisive in the case of radiotelegrams originating in mobile stations. _________________________ Refer also to K26 in Recommendation D.90. B17 2.2 If two land stations participate in the han dling of a radiotelegram, the decision of the controlling operator accepting the radiotelegram from the originating mobile station will prevail and will be valid for international account- ing. 3 Routing of radiotelegrams B18 3.1 Radiotelegrams should be routed via the l and station that is considered most suitable in relation to the mobile station concerned. B19 3.2 However, to expedite or to facil itate the routing of radiotelegrams to a land station, a mobile station may transmit them to another mobile station. The latter shall dispose of such radiotelegrams in the same manner as if they originated with itself (see B39 to B42). B20 3.3 If the sender of a radio telegram handed in at a mobile station has indicated the land station to which he desires his radiotelegram to be sent, the mobile station shall, in order to effect this transmission to the land station indicated, wait, if necessary until the conditions specified in B18 and B19 are fulfilled. B21 3.4 In order to facilitate dis posal of traffic, and subject to such restrictions as individual Administra- tions may impose, land stations may, in exceptional circumstances and with discretion, without incurring additional charges, exchange radiotelegrams and service messages relating thereto. 4 Transmission of radiotelegrams 4.1 Routine repetition B21A 4.1.1 Routine repeptition means the rep etition of isolated figures and mixed groups containing figures in the address and text parts. Any such repetition should be given after the text part and be preceded by the code COL . B21B 4.1.2 In view of Recommendati on F.1, routine repetition is not compulsory. It is used at the discretion of the sending station where the transmission conditions warrant it. B21C 4.1.3 Where a mobile station g ives a routine repetition, the land station shall use the repeated groups to check the received address and text parts, but should not retransmit the routine operation. 4.2 Doubtful reception B22 4.2.1 In the mobile service, when commu nication becomes difficult, the two stations in communica- tion should make every effort to complete the radiotelegram in course of transmission. The receiving station may request not more than two repetitions of a radiotelegram of which the reception is doubtful. B23 4.2.2 If this triple transmis sion is ineffective, the radiotelegram is kept on hand in case a favourable opportunity for completing its transmission occurs. B24 4.2.3 If the transmitting sta tion con- siders that it will not be possible to re-establish communications with the receiving station within twenty-four hours, it proceeds as follows: B25 4.2.4 If the transmitting station is a mob ile station, it immediately informs the sender of the rea- son for the non-transmission of his radiotelegram. The sender may then request: B26 a) that the radiotelegram be transmitted through another land station or through other mobile stations; or B27 b) that the radiotelegram be held until it can be transmitted without additional charge; or B28 c) that the radiotelegram be cancelled. B29 4.2.5 If the transmitting stat ion is a land station, it applies the provisions of B43 to B54 to the radiotelegram. B30 4.2.6 When a mobile station subsequ ently transmits a radiotelegram thus held to the land sta- tion that incompletely received it, this new transmission must bear the service instruction AMPLIATION at the end of the preamble line of the radiotelegram. B31 4.2.7 However, if the radiote legram is transmitted to another land station subject to the same Administra- tion, the new transmission must bear, at the end of the preamble line, the service instruction AMPLIATION VIA . | | (insert here the call sign of the land station to which the radiotelegram was transmitted in the first instance) and the Administration in ques- tion may claim only the charges relating to a single transmission. B32 4.2.8 The other land station, wh ich thus forwards the radiotelegram, may claim from the mobile station of origin any additional charges resulting from the transmission of the radiotelegram between itself and the office of destination. B33 4.2.9 When the land station designa ted in the address as the station by which the radiotelegram is to be forwarded cannot reach the destination mobile station and has rea- son to believe that such mobile station is within the service area of another land station of the Administration to which it is itself subject, it may, if no additional charge is incurred thereby, for- ward the radiotelegram to this other land station. B34 4.2.10 A station of the mobile ser vice that has received a radiotelegram and has been unable to ack- nowledge its receipt in the usual way, must take the first favour- able opportunity to give such acknowledgement. B35 4.2.11 When the acknowledgement of rec eipt of a radiotelegram transmitted between a mobile sta- tion and a land station cannot be given direct, it is forwarded through another mobile or land station by service advice if the latter is able to communicate with the station that has transmitted the radiotelegram in question. In any case, no additional charge shall result. 4.3 Long-distance radiocommunications B36 4.3.1 Administrations reserve the ri ght to organize a long-distance radiocommunication service between land stations and mobile stations, with deferred ack- nowledgement of receipt or without any acknowledgement of receipt. B37 4.3.2 Each Administration designates the la nd station or stations participating in the long-distance radio service. An indication to this effect shall appear in the List of Coast Stations [6]. B38 4.3.3 When there is doubt ab out the accuracy of any part of a radiotelegram transmitted under either of the systems mentioned in B36, the indication doubtful reception is entered on the copy delivered to the addressee, and the doubtful words or groups of words are underlined. If words are missing, blanks are left in the places where these words should be. 4.4 Routine retransmission by mobile stations B39 4.4.1 When a land station cannot re ach the mobile station for which a radiotelegram is destined, the land station may, in order to forward the radiotelegram to its destination, have recourse to the help of another mobile station provided that the latter consents. The radiotelegram is then transmitted to this other mobile station. The help of the latter is given free of charge. B40 4.4.2 The same provision is also appli cable to traffic from mobile stations to land stations, when necessary. B41 4.4.4 The station assisting in the fr ee retransmission in accordance with B39 and B40 must enter the service abbreviation QSP . | | (name or call sign of the mobile station) at the end of the preamble line of the radiotelegram. B42 4.4.4 In order that a radiotel egram thus forwarded may be considered as having reached its destination, the station that has made use of this indirect route must have obtained the regular acknowledgement of receipt, either direct or by an indirect route, from the mobile station for which the radiotelegram was destined or from the land station to which it was to be forwarded, as the case may be. 4.5 Period of retention of radiotelegrams at land stations B43 4.5.1 When it has not been pos sible for a land station to transmit a radiotelegram to a mobile station by the morning of the fifth day (not including the day of handing-in), the land station treats the radiotelegram as undelivered and notifies the sender accordingly. B44 4.5.2 The sender of a radiote legram destined for a mobile station may specify the number of days during which the land station may hold the radiotelegram. In that case, the service indication Jx (x days), specifying the number of days (ten at the most) exclusive of the day of handing-in of the radiotelegram, shall be shown before the address. When it has not been possible for a land station to transmit a radiotelegram bear- ing the service indication Jx within the prescribed period, the land station treats the radiotelegram as undelivered and informs the sender accordingly. B45 4.5.3 (Spare) B46 4.5.4 The periods mentioned in B43 a nd B44 shall be ignored if the land station is sure that the mobile station will soon come within its service area B47 4.5.5 On the other hand, the lap se of those periods is not awaited when the land station is sure that the mobile station, being in course of a voyage, either has definitely left its service area or will not enter it. B48 4.5.6 If there is reason to beli eve that no other land station of the Administration to which it is subject is or will be in touch with it, the land station cancels the radiotelegram as far as concerns the section between itself and the mobile station and informs the office of origin, which notifies the sender. B49 4.5.7 In the contrary case, the la nd station forwards the radiotelegram to the land station believed to be in touch with the mobile station, provided, however, that no additional charge results therefrom. B50 4.5.8 The land station that car ries out the redirection alters the address of the radiotelegram by placing after the name of the mobile station that of the new land station charged with the transmission and adding at the end of the preamble line the service instruction REDIRECTED FROM . | | RADIO , which must be transmitted throughout the course of the radiotelegram. B51 4.5.9 If, within the limits of the requi site period of retention of radiotelegrams, the land sta- tion that has redirected a radiotelegram to another land station is subsequently in a position to transmit the radiotelegram direct to the destination mobile station, it does so by inserting the service instruction AMPLIATION at the end of the preamble line. B52 4.5.10 It shall then transmit to the la nd station to which the radiotelegram had been redirected a service advice informing the latter of the transmission of the said radiotelegram. B53 4.5.11 When a radiotelegram cannot be tran smitted to a mobile station owing to the arrival of the latter in a port near the land station, the latter station may, according to circumstances, forward the radiotelegram to the mobile station by other means of communication, at the same time informing the office of origin by service advice of the delivery. B54 4.5.12 (Spare) 5 Advice of nondelivery B55 5.1 When, for any reason, a radiotele gram originating in a mobile station and destined for a place on land cannot be delivered to the addressee, an advice of non-delivery is addressed to the land station or the telegraph office that received the radiotelegram. B56 5.2 After checking the address, the la nd station forwards the advice, when possible, to the mobile station, if necessary by way of another land station of the same country or of a neighbouring country, as far as existing con- ditions or special agreements permit. B57 5.3 When a radiotelegram rece ived at a mobile station cannot be delivered, that station so informs the office or mobile station of origin by a service advice. B58 5.4 In the case of a radiot elegram originating on land, this service advice is sent, whenever possi- ble, to the land station through which the radiotelegram passed, or, if necessary, to another land station of the same country or of a neighbouring country, as far as existing conditions or special arrangements permit. B59 5.5 In such cases the name or ca ll sign of the station from which the radiotelegram was received is quoted. 6 Radiomaritime letters B60 6.1 Each Administration may orga nize a service of radiomaritime letters between mobile stations and its land stations. B61 6.2 Such correspondence is transmit ted by radio between the mobile and the land stations. B62 6.3 They may be forwarded on the land s ection: B63 a) wholly or partly by post (ordinary or air- mail); B64 b) exceptionally by telegraph, in which case delivery is subject to the periods of delay fixed for letter telegrams. B65 6.4 Radio retransmission of radiom ari- time letters is not permitted in the mobile service. B66 6.5 Radiomaritime letters shall be addre ssed only to places in the country in which the land sta- tion is situated, unless it is indicated in the List of Coast Sta- tions [6] that the station concerned will accept such traffic for onward transmission by post to places in other countries. B67 6.6 Radiomaritime letters bear the ser vice indication SLT . This indication precedes the address. B68 6.7 Except as otherwise prov ided in B60 to B70, radiomaritime letters may be accepted, taking into account CCITT Recommendations relating to letter telegrams , if the telegram service is used to convey radiomaritime letters. B69 6.8 The address must enable del ivery to be effected without enquiry or requests for information. Registered or abbreviated addresses are admitted when, exception- ally, radiomaritime letters are forwarded telegraphically on the land section. B70 6.9 Radiomaritime letters rank, fo r radio transmission, after ordinary radiotelegrams on hand. Those that have not been transmitted within 24 hours of handing-in are sent concurrently with ordinary radiotelegrams. 7 Special services B71 7.1 Telegrams with special servi ces are admitted, provided that the Administrations concerned accept them. B72 7.2 Refer to Recommendation F.1, A2 66 to A274 for the provisions concerning special services that may be applied for telegrams. 8 Special conditions relating to the Maritime Mobile-Satellite Service B73 8.1 In the Maritime Mobile-Satellite Servi ce the transmission of radiotelegrams should normally be permitted by radiotelex only. B74 8.2 The radiotelegram service in B73 sho uld be arranged in such a way that automatic retransmission is possible. DIVISION C RADIOTELEX 1 General 1.1 Routing of calls C1 1.1.1 A radiotelex call should be s et up via the land station that is considered most suitable in rela- tion to the mobile station concerned. C2 1.1.2 For radiotelex calls in the dire ction land station to mobile station, the caller should give the geographical position if possible and may also indicate the land station to be used. Such requests should be respected as far as is practicable. C3 1.1.3 For radiotelex calls in the dire ction mobile station to land station, the mobile station shall call the land station it desires to use. The land station shall either handle the call itself or advise the mobile station to use another land station that is more suitable to the mobile sta- tion. 1.2 Information to be supplied, as necessary, by the calling party C4 1.2.1 Calls to a mobile sta tion: a) telex number and/or answer-back code of the cal- ling subscriber; b) telex number of the mobile station; c) name or call sign of the mobile station; d) telex number and/or name of the land station to be used, or the approximate geographical position of the mobile station. C5 1.2.2 Calls from a mobile sta tion: a) telex number of the mobile station; b) the accounting authority identification code (AAIC) | in the single-operator or manual service (see Annex A to Recommendation D.90); c) destination country and/or network; d) called subscriber's telex number and/or answer-back code. 1.3 Call duration C6 1.3.1 The chargeable duration of a call wi ll be fixed at the end of the call: a) in the direction from mobile station by the con- trolling operator ; b) in the direction to mobile stations: - by the land station operator in manual and single-operator service; - by the operator of the international position of the outgoing country in the semiautomatic service. C7 1.3.2 If two land stations participate in the hand ling of the call, the opinion of the land station that has accepted the call from the originating mobile station shall prevail. C8 1.3.3 When, through any fault of the ser vice, difficulty is experienced in the course of a call, the chargeable duration shall be reduced automatically or manually to the total time during which transmission conditions were satis- factory, taking into account CCITT Recommendations (F.60 and F.61). 1.4 Validity of requests C9 1.4.1 If it becomes obvious that the requ ired mobile station cannot be reached by the land station, the caller should be informed as soon as possible in order to have the opportunity to have the call cancelled if required. In any event, the caller should be informed no later than in the morning of the second day following the day on which the call request was made. C10 1.4.2 In an automatic service any inform ation concerning the failure to set up a call shall be sent back to the calling subscriber. The standardized expressions and abbreviations will be used to account for this failure. The period of validity for store and forward calls in the automatic service shall be as in Recommendation F.72. 1.5 Exchange of radiotelegrams by radiotelex C11 1.5.1 Stations of the Maritime Mobi le Service that are equipped for radiotelex may transmit and receive radiotelegrams by means of radiotelex. C12 1.5.2 Stations of the Maritime Mob ile-Satellite Service should normally transmit and receive radiotelegrams by means of radiotelex only. 2 Traffic from mobile stations 2.1 Automatic service C13 2.1.1 Whenever possible, automa tic procedures should be used; i.e. the calling subscriber should con- tact the called subscriber directly without the aid of an operator. C14 2.1.2 After connection with the des ired land station is established, the mobile station should select directly the appropriate telex destination code (Recommendation F.69) and the number of the subscriber of an Administration's telex network. 2.2 Single-operator service C15 2.2.1 The land station operator selects the cal led subscriber directly via the automatic telex network if automatic procedures (C13) are not possible. 2.3 Semiautomatic service C16 2.3.1 The telex operator of the intern ational exchange of the land station country selects the called subscriber directly if automatic procedures (C13) or single-operator procedures (C15) cannot be applied. 2.4 Manual service C17 2.4.1 The land station operator applies man ual procedures if automatic (C13), single-operator (C15) or semiautomatic (C16) procedures are not possible. 2.5 Store-and-forward service C17A 2.5.1 The mobile station transmits the messag e to the land station using automatic procedures, and the land station retransmits the message over the designated land net- work. C17B 2.5.2 The manual, semi-automatic and automati c procedures for store-and-forward in the terrestrial telex network, as laid down in Recommendations F.72, U.80 and U.81, should be taken into account. 2.6 Procedures C18 2.6.1 The manual, semiautomatic and auto matic procedures for the terrestrial telex network , as laid down in Recommendations F.60 and F.61, should be taken into account. 3 Traffic to mobile stations 3.1 Automatic procedure (direct access by the cal- ling subscriber to the called subscriber) C19 3.1.1 Whenever possible automatic proce dures should be used; i.e., the calling subscriber should contact the called subscriber directly without the aid of an opera- tor. C20 3.1.2 The subscriber of an Admini stration's telex network should select the appropriate address code , including the mobile station number , and if neces- sary the ocean area number , to connect him through a land station with which his Administration has established routing of maritime traffic for the ocean area desired. C21 3.1.3 If the subscriber, for some tech nical reason, cannot establish contact with the mobile sta- tion directly, semiautomatic (C35) or single-operator (C24) pro- cedures should be used. C22 3.1.4 On international telex lin ks a destination code will be used in accordance with Recommendation F.69, unless otherwise agreed bilaterally. C23 3.1.5 Once a call has been estab lished (indicated by an exchange of answer-backs), the subscriber should start a new line before sending his message (Recommendation F.60, S A.2.2 refers). 3.2 Single-operator procedure (direct access by the calling subscriber to a foreign land station) 3.2.1 Booking C24 3.2.1.1 If automatic working (C19) is not possi ble the subscriber selects the foreign land station in question using automatic direct selection and submits the call details to the land station operator. C25 3.2.1.2 Where an Administration per mits its subscribers to book a call directly with a land station in another country, the charges set by the land station must be levied by the calling subscriber's Administration. C26 3.2.1.3 In addition to the informa tion in C4, the calling subscriber must designate his national telex network. C27 3.2.1.4 As an alternative to C25 and C26, la nd stations may accept direct calls from foreign sub- scribers provided that the calling subscriber supplies the name and address of a party in the land station's country that will take responsibility for the payment of charges. C28 3.2.1.5 The procedures described in C25 a nd C27 may only be applied when an appropriate bilateral agreement exists between the two Administrations concerned. If such an agreement does not exist, the land station should refuse such calls to avoid accounting difficulties. C29 3.2.1.6 In C24 and C27 above, the ca ll to the foreign land station will be charged as an ordinary interna- tional telex call for its entire duration, regardless of whether it merely serves the purpose of booking the radiotelex call or whether the land station can extend the connection to the mobile station without having to recall the originating subscriber. 3.2.2 Setting-up C30 3.2.2.1 When demand operation can not be used, the caller will be disconnected until the mobile station is available. The land station operator then recalls the caller using automatic direct selection; the land station's country being considered as the outgoing country for the call. C31 3.2.2.2 In case C30, the land station incl udes in the bill: a) the landline charge ; b) the land station charge C32 3.2.2.3 When demand operation has been u sed, the bill made out by the land station operator includes only: - the land station charge C33 3.2.2.4 All information regarding collec tion of charges for single-operator calls (see C15) should be submitted by the land station Administration on a regular basis to be determined by the Administrations involved. C34 3.2.2.5 The methods to be used in colle cting the charges are described in Recommendation D.90. 3.3 Semiautomatic procedure (access by the calling subscriber to his international exchange for the establishment of a direct connection) C35 3.3.1 If automatic (C19) or single-opera tor (C24) procedures are not possible, the telex operator of the international exchange of the outgoing country receives the booking and selects the mobile station directly. The procedures of Recommendation F.60, S 3.3 shall be applied. 3.4 Manual procedure 3.4.1 Booking C36 3.4.1.1 If automatic (C19), single-oper ator (C24) or semiautomatic (C35) procedures are not possi- ble, the subscriber should make his booking at the international telex centre of the outgoing country or network. C37 3.4.1.2 If conditions permit, the intern ational telex position should select the foreign land sta- tion in question directly. Otherwise the international telex posi- tion of the land station country should be selected to give the necessary assistance to obtain contact with the land station in question. 3.4.2 Setting-up C38 3.4.2.1 The land station operator obta ins the caller directly or with the assistance of his own interna- tional telex position, which selects the caller. Otherwise he selects his own international telex position in order to be con- nected to the international telex position of the outgoing country, which then selects the caller. C39 3.4.2.2 Within 24 hours of the call's termi nation, the land station shall pass the following informa- tion to the international telex centre of the origin country, where it is recorded for charging and accounting purposes: a) the calling subscriber's telex number; b) the mobile station's call sign; c) the chargeable duration of the call; d) the land station charge to be collected. 3.5 Store-and-forward C39A 3.5.1 The subscriber uses two-stage s election, calling the land station desired and storing the message for retransmission to the mobile station. 4 Radiomaritime telex letter 4.1 Definition C40 4.1.1 radiomaritime telex letter : A mess age sent by telex direct from a mobile station to a selected land station or to a selected public telegraph office for delivery by mail or any other appropriate means. 4.2 Operational procedures C41 4.2.1 A ship subscriber will select the acc ess code allocated for the radiomaritime telex letter ser- vice, or the access code allocated for the fully automatic telex service (see Recommendation F.126) followed, if appropriate, by the telex number of the telegraph office. C42 4.2.2 The ship operator shall supply the follow ing information: a) telex number of the mobile station (as provided in Recommendation F.125), b) AAIC, c) addressee's name and address, d) words "RADIOMARITIME TELEX LETTER". BLANC DIVISION D RADIOTELEPHONE 1 General 1.1 Language to be used D1 1.1.1 Where applicable and where language diffi- cul ties exist, the abbreviations and signals in Appen- dix 14 of the Radio Regulations [3] and the Phonetic Alphabet and Figure Code in Appendix 24 of the Radio Regulations should be used in radiotelephone communications between land stations and mobile stations. 1.2 Priority D2 1.2.1 Apart from the general order of prior ity shown in A21 to A32, radiotelephone calls shall have precedence, so far as possible, over other telephone calls of the same class. 1.3 Routing of calls D3 1.3.1 A radiotelephone call sho uld be set up via the land station that is considered most suitable in relation to the mobile station concerned. D4 1.3.2 For radiotelephone calls in the dire ction land station to mobile station, the caller should give the geographical position if possible and may also indicate the land station to be used. Such requests should be respected as far as is practicable. D5 1.3.3 For radiotelephone calls in the dire ction mobile station to land station, the mobile station shall call the land station it desires to use. The land station shall either handle the call itself or advise the mobile station to use another land station that is more suitable to the mobile sta- tion. 1.4 Information to be supplied by the calling party D6 1.4.1 Calls to a mobile stat ion: a) complete telephone number of the calling sub- scriber; b) appropriate identification of the mobile sta- tion; c) name of the land station to be used or the approximate geographical position of the mobile station; d) name of the called party, if applicable. All calls to mobile stations in the maritime mobile service are treated as personal calls, with the possible exception of the Maritime Mobile-Satellite Service. D7 1.4.2 Calls from a mobile sta tion: a) appropriate identification of the mobile sta- tion; b) the accounting authority identification code (AAIC) | in the single-operator or manual service (see Annex A to Recommendation D.90); c) the information specified in Article 60 of the Instructions for the International Telephone Service [7]. 1.5 Call duration D8 1.5.1 The chargeable duration of a call will be fi xed at the end of the call: a) in the direction from the mobile stations by the controlling operator; b) in the direction to mobile stations; - by the land station operator in manual and single-operator service; - by the operator of the international centre of the outgoing country in the semiautomatic service. D9 1.5.2 If two land stations participate in the hand ling of the call, the opinion of the land station that has accepted the call from the originating mobile station shall prevail. D10 1.5.3 When, through any fault of the ser vice, difficulty is experienced in the course of a call, the chargeable duration shall be reduced automatically or manually to the total time during which transmission conditions were satis- factory, taking into account CCITT Recommendations. 1.6 Validity of requests D11 1.6.1 If not cancelled by the cal ler or refused by the addressee, requests for calls from land to mobile stations: a) in the VHF and MF bands shall remain valid until 0800 local time on the day following the day on which the request was made; b) in the HF band shall remain valid until 0800 local time on the second day following the day on which the request was made. D12 1.6.2 However, if it becomes obvi ous that the required mobile station is outside the coverage area of the land station, the caller shall be informed as soon as possible in order to have the call cancelled. D13 1.6.3 All requests for calls from mob ile stations to land shall be cancelled where the call is not immediately attended to or on completion of the successive attempts provided for by the rules of each Administration, unless there has been an express request to the contrary by the calling mobile station, which shall be able to determine the waiting period for listening in on the land station frequency with a view to mak- ing a further attempt to set up the call. 1.7 Exchange of radiotelegrams by radiotelephony D14 1.7.1 Stations of the Maritime Mobile Serv ice that are equipped for radiotelephony may transmit and receive radiotelegrams by means of radiotelephony. Stations of the Maritime Mobile-Satellite Service should normally transmit and receive radiotelegrams by means of radiotelex only. 2 Traffic from mobile stations 2.1 Automatic service D15 2.1.1 Whenever possible, automatic proced ures should be used; i.e. the calling subscriber should contact the called subscriber directly without the aid of an opera- tor. D16 2.1.2 After connection with the des ired land station is established, the mobile station should select directly the appropriate telephone country code (Recommendation E.163) and the number of the subscriber of an Administration's telephone network. 2.2 Single-operator service D17 2.2.1 The land station operator sel ects the called subscriber directly via the automatic telephone networks if automatic working (D15) is not possible. 2.3 Semiautomatic service D18 2.3.1 The telephone operator of the intern ational exchange of the land station country selects the called subscriber directly if automatic (D15) or single-operator (D17) procedures cannot be applied. 2.4 Manual service D19 2.4.1 The land station operator applies manual proce dures if automatic (D15), single-operator (D17) or semiautomatic (D18) working is not possible. 2.5 Store-and-forward service D19A 2.5.1 The mobile station transmits th e message to the land station using automatic procedures, and the land station retransmits the message over the designated land network. D19B 2.5.2 The manual, semi-automatic an d automatic procedures for store-and-forward in the terrestrial telex network, as laid down in Recommendations F.72, U.80 and U.81, should be taken into account. 2.6 Procedures D20 2.6.1 The automatic, semiautomatic and man ual procedures for the terrestrial telephone network, as laid down in Recommendation E.141 and the Instructions for the International Telephone Service [7] should be taken into account. 3 Traffic to mobile stations 3.1. Automatic procedure (direct access by the calling subscriber to the called subscriber) D21 3.1.1 Whenever possible, automatic proc edures should be used; i.e. the calling subscriber should contact the called subscriber directly without the aid of an opera- tor. D22 3.1.2 The subscriber of an Administ ration's telephone network should select the appropriate address code, including the mobile station number and if necessary the ocean area number, to connect him through a land station with which his Administration has established routing of maritime traffic for the ocean area desired. D23 3.1.3 If the subscriber, for some techn ical reason, cannot establish contact with the mobile sta- tion directly, single-operator (D24) procedures should be used. 3.2 Single-operator procedure (direct access by the calling subscriber to a foreign land station) 3.2.1 Booking D24 3.2.1.1 If automatic procedures cannot be app lied, the subscriber selects the foreign land station in question using automatic direct selection. The land station opera- tor records the call details. D25 3.2.1.2 Where an Administration per mits its subscribers to book a call directly with a land station in another country, the charges set by the land station must be levied by the calling subscriber's Administration. D26 3.2.1.3 In addition to the informa tion in D6, the calling subscriber must designate his country and national telephone number. D27 3.2.1.4 As an alternative to D24 and D25, l and stations may accept direct calls from foreign sub- scribers provided that the calling subscriber supplies the name and address of a party in the land station's country that will take responsibility for the payment of charges. D28 3.2.1.5 The procedures desc ribed in D25 and D27 may only be applied when an appropriate bilateral agreement exists between the two Administrations concerned. If such an agreement does not exist, the land station should refuse such calls to avoid accounting difficulties. D29 3.2.1.6 In D24 and D27 above, the ca ll to the foreign land station will be charged as an ordinary interna- tional telephone call for its entire duration, regardless of whether it merely serves the purpose of booking the radiotelephone call or whether the land station can extend the connection to the mobile station without having to recall the originating subscriber. 3.2.2 Setting-up D30 3.2.2.1 When demand operation can not be used, the caller will be disconnected until the mobile station is available. The land station operator then recalls the caller using automatic direct selection, the land station country being considered as the outgoing country for the call. D31 3.2.2.2 In case D30, the land station incl udes in the bill: a) the landline charge; b) the land station charge. D32 3.2.2.3 When demand operation has be en used, the bill made out by the land station operator includes only: - the land station charge. D33 3.2.2.4 All information regarding colle ction of charges for single-operator calls (see D17) should be submitted by the land station Administration on a regular basis to be determined by the Administrations involved. D34 3.2.2.5 The methods to be used in colle cting the charges are described in Recommendation D.90. 3.3 Semiautomatic procedure (access by the calling subscriber to his international exchange for the establishment of a direct connection) D35 3.3.1 If automatic (D21) or single-ope rator (D24) procedures are not possible, the telephone operator of the international exchange of the outgoing country receives the booking and selects the mobile station directly. Nor- mal international semiautomatic telephone procedures shall be applied. 3.4 Manual procedure 3.4.1 Booking D36 3.4.1.1 If automatic (D21), single-oper ator (D24) or semiautomatic (D35) procedures cannot be applied, the subscriber should make his booking at the interna- tional centre of the outgoing country. D37 3.4.1.2 If conditions permit, the intern ational position should select the foreign land station in question directly. Otherwise the international position of the land station country should be selected to give the necessary assistance to obtain contact with the land station in question. 3.4.2 Setting-up D38 3.4.2.1 The land station oper ator obtains the caller directly or with the assistance of his own international telephone centre, which selects the caller. Otherwise he selects his own international telephone centre in order to be connected to the international telephone centre of the outgoing country, which then selects the caller. D39 3.4.2.2 After the call's termin ation, the land station shall pass the following information to the inter- national telephone centre of the country of origin, where it is recorded for charging and accounting purposes: a) the calling subscriber's telephone number; b) the mobile station's name and/or call sign; c) the chargeable duration of the call; d) the land station charge to be collected. D40 3.4.2.3 Otherwise all information rega rding collection of charges should be submitted to the caller's Administration on a regular basis to be determined by the Administrations involved. 3.5 Store-and-forward D40A 3.5.1 The station uses two-stage sele ction, calling the land station desired and storing the message for retransmission to the mobile station. BLANC DIVISION E RADIOTELEXOGRAM 1 General 1.1 Definition E1 1.1.1 A radiotelexogram is a message se nt by telex direct from a subscriber to a foreign land sta- tion for transmission to a mobile station or a message sent from a mobile station to a land station for transmission by telex direct to a foreign subscriber (see Note in E.5). 1.2 Provision of service E2 1.2.1 Operating, charging and accounting proce dures should be subject to bilateral agreement between the Administrations concerned. If such an agreement does not exist, the land station should refuse such radiotelexograms in the shore-to-ship direction. E3 1.2.2 Alternatively, land stations may acc ept radiotelexograms from foreign subscribers provided that the calling subscriber supplies the name and address of a party in the land station country that will take responsibility for the payment of charges. 1.3 Validity of requests E4 1.3.1 If it becomes obvious that the requ ired mobile station is outside the coverage area of the land station, the caller shall be informed as soon as possible in order to have the radiotelexogram cancelled. 2 Operational procedures E5 2.1 The transmission of radiotelexog rams should be in accordance with Divisions B and C as appro priate except as specified below or where varied through bilateral agreement. Note - A radiotelexogram is different from a radiotelex call. In particular, a radiotelexogram is normally transmitted between the mobile station and the land station as a radiotelegram by Morse telegraphy or by radiotelephony E6 2.2 Information to be supplied to the land sta- tion, as necessary, by the calling party E7 2.2.1 Radiotelexogram to a mobile station a) telex number and/or answerback code of the cal- ling subscriber; b) the national telex network to which the sub- scriber belongs; c) the date and time of origin; d) the word RADIOTELEXOGRAM; e) name or designation of the addressee with sup- plementary particulars if necessary; f ) the name of the mobile station followed, when necessary, by its call sign or where this is not known, the partic- ulars of the passage made by the mobile station; g) any specific delivery instructions. E8 2.2.2 Radiotelexogram from a mobile station a) name and/or call sign of the mobile station; b) identification of the accounting authority; c) the date and time of origin; d) the word RADIOTELEXOGRAM; e) destination country and/or network; f ) called subscriber's telex number and answerback code. References [1] Final Acts of the World Administrative Maritime Radio Confer- ence , ITU, Geneva, 1974. [2] Final Acts of the World Administrative Radio Conference (WARC) , ITU, Geneva, 1979. [3] Radio Regulations , ITU, Geneva, 1982. [4] Final Acts of the World Administrative Telegraph and Telephone Conference, Telegraph Regulations, Telephone Regulations , ITU, Geneva, 1973. [5] List of ship stations , ITU, Geneva, 1987. [6] List of coast stations , ITU, Geneva, 1986. [7] Instructions for the international telephone service , (1st October 1985) , ITU, Geneva, 1985. MONTAGE: REC. E.210 SUR LE RESTE DE CETTE PAGE Tableaux: 3 - Tabulateurs: .. from NF02/002 TEXTE Disk 44 NF01/017 (OPM = NF02) NF02/005 (OPM = NF03) NF02/015 (OPM = NF03) NF03/010 (OPM = NF04) folio a definir sur cette page MONTAGE: REC. E. 200 EN T | TE DE CETTE PAGE Recommendation E.210 _________________________ This Recommendation is also included in the F and Q SHIP STATION IDENTIFICATION FOR VHF/UHF AND MARITIME MOBILE-SATELLITE SERVICES 1 Introduction 1.1 The purpose of this Recommendation is to specify a method by which an internationally unique ship station identification may be assigned to all the ships participating in the Maritime Mobile Services. 1.2 Terminology The following terms are used in this Recommendation: 1.2.1 Maritime Mobile (Terrestrial) Service F: service mobile maritime (de Terre) S: servicio movil maritimo (terrenal) Conventional Maritime Mobile Services such as the HF Maritime Service, the MF Maritime Service and the VHF Maritime Service (as defined in the Radio Regulations [1]). Maritime Mobile-Satellite Service F: service mobile maritime par satellite S: servicio movil maritimo por satelite As defined in the Radio Regulations [1]. 1.2.2 coast station F: station c | tiere S: estacion costera A land station in the Maritime Mobile Service. _________________________ Series as Recommendations F.120 and Q.11 ter | espec- tively. coast earth station F: station terrienne c | tiere S: estacion terrena costera An earth station in the Fixed-Satellite Service or, in some cases, in the Maritime Mobile-Satellite Service, located at a specified fixed point on land to provide a feeder link for the Mar- itime Mobile-Satellite Service. Note - In this Recommendation the term coast station is also intended to include, for simplicity, coast earth station. 1.2.3 ship station identity F: identite de la station de navire S: identidad de estacion de barco The ship's identification X1, X2. | | Xkidentifying the ship uniquely. The ship station identity may be transmitted on the radio path. ship station number F: numero de station de navire S: numero de estacion de barco The number that identifies a ship for access from a public network and forms part of the international number to be dialled or keyed by a public network subscriber. Note 1 - The formats of the ship station number are defined in other Series E and F Recommendations: - Recommendation E.215 for telephone and ISDN numbering in the Maritime Mobile-Satellite Service; - Recommendation F.125 for telex numbering in the Maritime Mobile-Satellite Service; - numbering plans for maritime mobile (terrestrial) systems for further study. Note 2 - In this Recommendation the term ship station is intended to also include, for simplicity, ship earth station. 1.2.4 coast station identity F: identite de la station c | tiere S: identidad de estacion costera The coast station identification X1, X2. | | Xktransmitted on the radio path. Note - In this Recommendation the term coast station identity is intended to also include, for simplicity, coast earth station identity. 1.3 Basic considerations The considerations that form the basis of this ship station identification system are: a) that every ship shall have a unique ship station identity; b) that the same unique ship station identity should be used in both VHF/UHF and Maritime Mobile-Satellite Sys- tems; c) that the same unique ship station identity should be used for all telecommunication services; d) that it is desirable that the ship station number and the ship station identity are related in a simple and unambiguous manner; e) that the capacity of the ship station identifi- cation system shall be sufficient to admit all ships wanting, or required, to participate in the various Maritime Mobile Services at present and in the foreseeable future; f ) that the ship identity system shall be a numer- ical system, and should use the full range of decimal digits; g) that two or three of the digits, X1X2X3, of the ship station identity shall indicate the ship's nationality. 2 Ship station identification Ship station identity is established as nine digits. X1X2X3X4X5X6X7X8X9 The initial three digits define the nationality of the ship as indicated in the following sections. Since the whole or a part of the ship station identity is used in the ship station number, certain restrictions may be imposed on the allocation of ship station identities for the Maritime Mobile-Satellite Service. Such restrictions are identified in Recommendations E.215 and F.125. The use of the ship station iden- tity in maritime mobile (terrestrial) systems is for further study. 3 Assignment of ship station identification 3.1 Assignment of blocks of numbers Blocks of numbers should be assigned to countries so that individual Administrations may systematically assign ship station identities within those blocks. 3.2 Identification of ship's geographical region The first digit of each ship station identity is intended to identify the geographical region to which the nationality (regis- try) of the ship relates. Only the digits 2 through 7 are used for this purpose to identify easily the world's regions as follows: 2 - Europe 3 - North America 4 - Asia (except Southeast Asia) 5 - Oceania and Southeast Asia 6 - Africa 7 - South America. Arrangements may therefore be made to systematically assign a ship station identity to each ship as soon as national blocks are allocated. The digits zero (0) and one (1) are allocated for other purposes as indicated in Table 1/E.210. The digits eight (8) and nine (9) are not used for identifica- tion of geographical regions. However, for maritime VHF/UHF sys- tems, the digits 8 and 9 may be used to expand network access as shown in S 8.2. The allocation of the first digit of the ship sta- tion identity is summarized in Table 1/E.210. 3.3 Identification of ship's nationality Since blocks of the ship station identities would be systemat- ically assigned by country, a ship's nationality can be determined by analysing the first three digits of its ship station identity. The digits to be analysed are called Maritime Identification Digits (MID). Examples of the maritime identification digits for ships are given in Table 2/E.210. 4 Assignment of maritime identification digits Each MID represents a discrete capacity assigned according to a plan that relates assigned capacity to ship population. A plan has been developed by the World Administrative Radio Conference for the Mobile Services (MOB-83) [2] and is contained in Appendix 43 to the Radio Regulations. The Radio Regulations make provision for the allocation of additional MID for a specific country when necessary. H.T. [T1.210] TABLE 1/E.210 Allocations of first digit (Xv1) in the ship station identity __________________________________________________________________ { First digit (X 1) of ship station identity } Use __________________________________________________________________ 0 { Group call/coast station identiy } __________________________________________________________________ 1 Reserved for future expansion __________________________________________________________________ 2 Europe __________________________________________________________________ 3 North America __________________________________________________________________ 4 Asia (except South East Asia) __________________________________________________________________ 5 Oceania and South East Asia __________________________________________________________________ 6 Africa __________________________________________________________________ 7 South America __________________________________________________________________ 8 See S 8.2 __________________________________________________________________ 9 See S 8.2 __________________________________________________________________ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tableau 1/E.210 [T1.210], p.1 H.T. [T2.210] TABLE 2/E.210 ______________________________________________________________ Country { Maritime identifications Digits (MID) } Ship station identity ______________________________________________________________ P 231 { from 231 000 000 to 231 999 999 } Q 233, 234 { from 233 000 000 to 234 999 999 } R 236, 237, 238 { from 236 000 000 to 238 999 999 } S 240 to 249 { from 240 000 000 to 249 999 999 } ______________________________________________________________ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Tableau 2/E.210 [T2.210], p. 5 Group calls X1 = 0, X2 = 1 to 9 and X1 = 0, X2 = 0, X3 = 0, X4 = 0 to 9 are assigned to indicate a group call to a group of ships having a community of interest. Such calls may be barred in the public switched network and/or at the coast stations. Control of group calls may also be achieved by the use of special group service access to the coast stations. The group call numbering scheme used in the INMARSAT system is given in Annex B to Recommendation E.215. 6 Coast station identity X1 = 0, X2 = 0, X3 = 1 to 9 are assigned to indicate coast station identities in maritime mobile (terrestrial) systems. 7 Future expansion of the ship station identification system X1 = 1 as in the format 1 XXXXXXXX has been reserved for future expansion. Note - X1= 1 is used in the INMARSAT standard A system for identification of ship earth stations (see Recommendations E.215 and F.125). 8 Considerations related to ship station identity assignments 8.1 The ship station identity, or part of it, will be included in the ship station number. The way in which this is done for INMARSAT mobile numbers is described in Recommendations E.215 and F.125. In order to distinguish between INMARSAT mobile numbers con- sisting of 9 and 12 digits (if they coexist), the digit X7of the ship station identity must take the fixed value 0. This constraint is not valid when only 12 digit numbers exist in the future (see Recommendation E.215). The relationship between the nine-digit ship station identity and the part of it which is used in the ship station number is illustrated in Table 3/E.210. If the part of the identity used in the number is shorter than nine digits, then the corresponding identity is obtained by adding trailing zeros to form nine-digit ship station identities. This principle must be observed when allo- cating ship station identities for ships in the Maritime Mobile-Satellite Service (see Recommendations E.215 and F.125). H.T. [T3.210] TABLE 3/E.210 _______________________________________________________________________________________________________________________ { Part of ship station identity used in ship station number } { Digits on the automatic network } Ship stations identity { Digits in the ship station identity } _______________________________________________________________________________________________________________________ MID X 4X 5X 6 6 MID X 4X 5X 6 000 9 MID X 4X 5X 6X 7 7 MID X 4X 5X 6X 7 00 9 MID X 4X 5X 6X 7X 8 8 MID X 4X 5X 6X 7X 8 0 9 MID X 4X 5X 6X 7X 8X 9 9 MID X 4X 5X 6X 7X 8X 9 9 _______________________________________________________________________________________________________________________ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Table 3/E.210 [T3.210], p. 8.2 Numbering plans for the maritime mobile (terrestrial) ser- vices are for further study. The principle of S 8.1 is likely to apply for these services also. For maritime mobile (terrestrial) services, additional ship station numbering techniques may be used to expand network access to more ship stations on a regional and national basis as follows: Ship station number | fIShip station identity (or part thereof) | Y X4X5X6X7 MyIyDy X4X5X6X7 00 | | 4X5X6X7X8 MnInDn X4X5X6X7X8 0 In this arrangement, the digits 8Y may be 80 to 89 to define as many as ten foreign MIDs (shown as MyIyDy) to permit automatic calling of ships of particular nationalities. The coast station would be required to translate a given 8Y to a particular foreign MID. The digit 9 may be used to indicate the maritime identifica- tion digits for ships of the same nationality as the network and the coast station. The coast station would be required to translate 9 to one particular national MID (shown as MnInDn). Reference [1] Radio Regulations , ITU, Geneva, 1982. [2] Final Acts of the World Administrative Radio Confer- ence for the Mobile Services | (MOB-83), ITU, Geneva, 1983. Recommendation E.211 SELECTION PROCEDURES FOR VHF/UHF MARITIME MOBILE SERVICES 1 General The purpose of this Recommendation is to define selection pro- cedures for VHF/UHF maritime mobile services. The number plan used in these selection procedures is not based upon the use of a T digit as defined in Recommendation E.215. The use of a T digit in VHF/UHF maritime mobile services is for further study. VHF/UHF maritime mobile services are more localized than mari- time mobile-satellite services. National procedures will be adopted to provide access to the VHF/UHF maritime mobile services. 2 Procedures for shore-to-ship calls Individual Administrations will wish to automate their mari- time services in their own timescales and to suit their own service requirements and network limitations. However, any scheme adopted by an Administration should be compatible with other schemes and should not inhibit progression towards a worldwide maritime ser- vice. In view of the restrictions imposed by national networks on shore originated calls, three levels of operation have been identi- fied to ensure that future evolution of the service can take place. 2.1 Level 1: Manual or single-operator service operation 2.1.1 Some Administrations will operate the VHF/UHF service on a manual or single-operator basis (a single-operator service is one in which the coast station operator in one country corresponds with subscribers of another country or vice versa). 2.1.2 It will be necessary to ensure that the facilities are compatible with essential functions, e.g., distress, in any automatic scheme. Additional equipment could be required to cater for new ship calling arrangements and use of a worldwide numbering scheme 2.2 Level 2: Minimum automation 2.2.1 The caller controls access to the relevant coast station and forwards the number of the required ship, i.e. there is no intelligent system in the network able to indicate the location of the ship customer is required to identify the location of the ship. 2.2.2 The level of automation requires a minimum of equipment, the required functions mainly consisting of interfacing with the network, call control, signalling over the radio channels and operational control of the radio channels. There would be a requirement to permit coexistence of the manual service and the automatic service. 2.2.3 An example of such a numbering sequence is given below. Access to coast stations is provided by dedicated number combina- tions taken from the national numbering plan. Pi International prefix Pi I1 I2 1 or 2 digit country code PiI1 I2N1 N2 Code to identify VHF/UHF service PiI1 I2N1 N2S1 S2 Code to identify coast station PiI1 I2N1 N2S1 S2MIDXXX Ship station number. The number of digits in the code N1N2S1S2will vary from one country to another, but the maximum international significant number length of 12 digits must be taken into account. In the exam- ple given, a subscriber in one country is calling a ship off the coast of another country. If the ship was off the coast of the subscriber's own country, the national prefix would be dialled instead of the international prefix and country code. 2.3 Level 3: Automatic national ship location 2.3.1 The caller controls the access to a particular country (or part of a country or a group of countries) and dials the number of the required ship i.e. an intelligent system is contained in the network so that it can indicate the location of the ship. The net- work is then responsible for routing the call on the basis of a known ship's location. All ships participating within the relevant area must report their location to a coast station, preferably on an automatic basis. 2.3.2 Equipment additional to level 2 of operation would be necessary, particularly in relation to the network's responsibility for locating the ship. 2.3.3 A numbering sequence suitable for this level of opera- tion is: Pi International prefix Pi I1 I2 I3 1, 2 or 3 digit country code PiI1 I2 I3N1 N2 N3 Code(s) to identify VHF/UHF service PiI1 I2 I3N1 N2 N3MIDXXX Ship station number. The code(s) N1N2N3will vary in length from one country to another. The example given concerns a subscriber in one country calling a ship off the coast of another country. If the ship was off the coast of the subscriber's own country, the national prefix would be dialled instead of the international prefix and country code. 3 Implementation of automatic schemes in national networks - Shore-originated calls There are variations of the numbering schemes given in SS 2.2 and 2.3. Some examples of these variations are given below. 3.1 Two-stage selection 3.1.1 Some countries may find it necessary to use a two-stage selection technique. A subscriber would dial a coast station or maritime centre and would be offered a second stage of dialling to facilitate the insertion of the ship station number. Numbering sequences for provision of access to the coast station or maritime centre would be the same as for an ordinary telephone call in that country. The second stage of dialling could be associated with multi-frequency push button equipment already available or specifi- cally provided for subscribers requiring maritime service calls. 3.1.2 If the first stage of dialling is used to provide access to a particular coast station, the scheme would be associated with level 2 of operation. If the first stage of dialling is used to provide access to a maritime centre that is able to locate the ship, then levels 2 or 3 of operation would be appropriate. 3.2 Digit insertion [(1 + 6) arrangement] 3.2.1 When ship station numbers become seven digits in length (stage 2 of the numbering plan), some countries will be unable to transmit the full seven digits through their national networks. As the first digit of an MID (Maritime Identification Digits) indi- cates the zone (continent) in which a country is located, a tech- nique may be adopted on a zonal (continental) basis in which the first digit of the MID is not dialled by the subscriber. The digit would then be inserted at the coast station (and/or maritime cen- tre), on the assumption that the MID is allocated to a country in the same zone as the coast station (and/or maritime centre). 3.2.2 Access to ships registered in countries outside the zone in which the coast station is located would be given on a manual basis by countries operating the 1 + 6 system. 3.2.3 The digit insertion technique can be associated with levels 2 and 3 of operation. 3.3 National numbering and conversion arrangement 3.3.1 Some countries may find it necessary temporarily to allocate ship's numbers compatible with their national numbering plans. An example of such a technique is given below. 3.3.2 When a ship enters the service area of a VHF/UHF coast station, the ship station's identity would be forwarded by the coast station to its parent Maritime Centre. The Maritime Centre would then assign, temporarily, a national telephone number which would correspond to the ship station identity of the ship. This pair of numbers would be stored at the Maritime Centre and the coast station. 3.3.3 A shore-based subscriber calling this ship would access the Maritime Centre and use the ship station number to obtain the corresponding temporary national telephone number. Once this is available, the call could be completed automatically from the Mari- time Centre. Alternatively, the call could be completed by the caller either on a manual, semiautomatic or automatic basis as appropriate. 3.3.4 The temporary national telephone number would be used for routing the call to the serving VHF/UHF coast station. At that point the corresponding ship station identity, which would be stored at the coast station, would be sent over the radio path to extend the connection to the ship. 3.4 VHF/UHF system using 87S This scheme can be used in national networks where the sub- scriber does not need to know the location of the ship. The national subscriber would dial the international prefix of the country, the maritime international code (87), a digit to identify the VHF/UHF service and the ship station number (which in this case is the same as the ship station identity). This method can be used by the subscribers belonging to a national network to reach ships which are in the coverage area of the coast stations of that national network. As long as no internationally coordinated loca- tion registration of ships is implemented, a subscriber in another country would follow the procedure described in S 2.3. 4 Procedures for ship-to-shore calls Ship-originated calls are less restricted than shore-originated call by national network limitations and no levels of operation are required. The prefixes defined in Annex A to Recommendation E.216 will be used. Table A-1/E.216 is applicable to both the Maritime Mobile-Satellite Service and Maritime Mobile VHF/UHF Service. Application of the prefix scheme will be similar to the satellite service as shown in Recommendation E.216. To standardize dialling procedures for VHF/UHF ship-originated calls, international dialling procedures will be adopted and automatic coast stations throughout the world will act upon such numbering sequences. To allow for ships that rarely leave the coast of a particular country, another technique has been identified whereby national dialling procedures can also be used. Whether or not to adopt this technique would be decided by each Administra- tion. 4.1 Calling a terrestrial subscriber 4.1.1 A shipboard subscriber will dial the prefix 00 followed by the required international number, whether or not the coast sta- tion is located in the required subscriber's country. Hence, the numbering sequence will be of the form: 00 Prefix for automatic call 00 I1 I2 I3 1, 2 or 3 digit country code 00I1 I2 I3N1-Nn National (significant) number. 4.1.2 Where national procedures are used, a shipboard sub- scriber will dial the prefix 0 followed by the required number belonging to the country of the coast station through which the call is being connected. Hence, the numbering sequence would be of the form: 0 Prefix for automatic call of the coast station country 0 N1-Nn National (significant) number. 4.2 Calling an operator 4.2.1 A shipboard subscriber will dial an operator prefix, the second digit identifying the type of operator required. 4.2.2 The table below illustrates the principle involved: | refix Optional Type of operator Digit 1 Digit 2 Digits | | I1 I2 I3 International out- going operator | | I1 I2 I3 International information service | | National operator | | National information service The use of the optional digits is the same as described in Recommendation E.216. 4.2.3 Each Administration may decide which operators to pro- vide, where they are to be located and how the call would be routed. If a request is received from a ship for a type of operator that the Administration does not provide, then the call will be routed to another operator convenient for that Administration. 5 Procedures for ship-to-ship calls (via coast station) 5.1 If the two ships are not off the coast of the same coun- try, the shipboard subscriber will dial the prefix 00 and the appropriate procedure outlined in SS 2.2 and 3.3 will be followed. 5.2 If the ships are off the coast of the same country, then the coast station would act upon the above procedure, but the national procedure of dialling the prefix 0 followed by the national number of the ship could be adopted. 6 Future evolution The development of these selection procedures, in order to accommodate the ability of the ISDN/PSTN to support 15 digits (Recommendations E.164 and E.165), and the possible use of a T digit as defined in Recommendation E.215, is for further study. Recommendation E.212 IDENTIFICATION PLAN FOR LAND MOBILE STATIONS 1 Introduction The purpose of this Recommendation is to define a future international identification plan for land mobile stations in internationally harmonized public land mobile networks (PLMNs) , and to establish the principles for allocation of international mobile station identities (IMSI) to stations in such networks. Note - The term "mobile station", as used in this Recommenda- tion, includes both card operated mobile stations and mobile sta- tions which are not card operated. In a card operated station, the IMSI may be contained in the card. In stations which are not card operated, the IMSI is contained in the physical mobile station equipment. In order to enable land mobile stations to roam among public land mobile networks located in different countries, an interna- tional identification plan is required for unique international identification of such stations. It is desirable that the alloca- tion of international mobile station identities should be made independently of the numbering plans used for accessing mobile sta- tions from the different public networks. This will enable Adminis- trations to develop their own national numbering plans for land mobile stations for different services without the need for coordi- nating them with other countries. Note - The word "country" in this Recommendation is also used with the meaning of geographical area. 2 Design considerations The design considerations that form the basis for the interna- tional identification plan for land mobile stations are as follows: 2.1 Public land mobile communication services may be provided internationally. 2.2 There could be a number of public land mobile networks (PLMNs) in a country. 2.3 When a number of PLMNs exist in one country, it should not be mandatory to integrate the identification plans of the various networks. 2.4 The identification plan shall permit the identification of the country as well as the PLMN in which the mobile station is registered. 2.5 The number of digits used to identify a PLMN within a country and a specific mobile station of that PLMN is a national matter; however, see S 4.2.2. 2.6 The identification plan should provide for substantial spare capacity to accommodate future requirements. 2.7 The identification plan need not be directly related to the numbering plans in use for different services. 2.8 The identification plan should, if necessary, enable the international mobile station identity to be used for: a) determination of the PLMN in which a foreign land mobile station is registered; b) mobile station identification when information about a specific land mobile station is to be exchanged between PLMNs; c) mobile station identification on the radio con- trol path for registering a mobile station in a foreign PLMN ; d) mobile station identification for all signalling on the radio control path; e) mobile station identification for charging and billing of foreign land mobile stations f ) subscription management, e.g., for retrieving, providing, changing and updating subscription data for a specific mobile station. 3 Definitions The following terms are related to this Recommendation: 3.1 mobile country code (MCC) The part of the mobile station identification uniquely identi- fying the country of domicile of the mobile station. 3.2 mobile network code (MNC) A digit or a combination of digits in the national part of the mobile station identification uniquely identifying the home PLMN of the mobile station. 3.3 mobile station identification number (MSIN) The part of the mobile station identification following the mobile network code uniquely identifying the mobile station within a PLMN. 3.4 national mobile station identity (NMSI) The mobile station identification uniquely identifying the mobile station nationally. The NMSI consists of the MNC followed by the MSIN. 3.5 international mobile station identity (IMSI) The mobile station identification uniquely identifying the mobile station internationally. The IMSI consists of the MCC followed by the NMSI. 3.6 A comprehensive list of terms related to land mobile sys- tems is given in Recommendation Q.70. 4 Identification plan principles 4.1 Structure of the mobile station identity According to the definitions given in S 3, the international mobile station identity is structured as given in Figure 1/E.212. Figure 1/E.212, p. 4.2 Identity allocation principles 4.2.1 Only numerical characters (0-9) shall be used. 4.2.2 Since the international mobile station identity is not used for dialling and routing purposes through the public switched telephone network (PSTN), public switched data networks (PDNs), integrated services digital network (ISDN), etc., its length will not be influenced by any numbering constraints of these networks. However, Administrations should endeavour to keep the International Mobile Station Identity as short as possible; it shall under no circumstances exceed 15 digits. 4.2.3 The mobile country code (MCC) consists of 3 digits. The allocation of MCCs is to be administered by the CCITT and is given in Annex A. Further MCCs may be allocated, if required. The first digits 0, 1, 8 and 9 are reserved for future use. 4.2.4 The national mobile station identity is to be assigned by each Administration. 4.2.5 The allocation of mobile network codes should be such that not more than 6 digits of the international mobile station identity have to be analysed in a foreign PLMN for information transfer. 4.2.6 Only one international mobile station identity shall be assigned to each mobile station independent of the number and type of services which terminate in the mobile station. ANNEX A (to Recommendation E.212) List of mobile country or geographical area codes Note - The countries or geographical areas shown in this annex include those that already have code assignments in the case of other public telecommunication networks. Zone 2 Code Country or Geographical Area 202 Greece 204 Netherlands (Kingdom of the) 206 Belgium 208 France 212 Monaco 214 Spain 216 Hungarian People's Republic 218 German Democratic Republic 220 Yugoslavia (Socialist Federal Republic of) 222 Italy 226 Romania (Socialist Republic of) 228 Switzerland (Confederation of) 230 Czechoslovak Socialist Republic 232 Austria 234 United Kingdom of Great Britain and Northern Ireland 235 United Kingdom of Great Britain and Northern Ireland 238 Denmark 240 Sweden 242 Norway 244 Finland 250 Union of Soviet Socialist Republics 260 Poland (People's Republic of) 262 Germany (Federal Republic of) 266 Gibraltar 268 Portugal 270 Luxembourg 272 Ireland 274 Iceland 276 Albania (Socialist People's Republic of) 278 Malta (Republic of) 280 Cyprus (Republic of) 284 Bulgaria (People's Republic of) 286 Turkey 288 Faroe Islands 290 Greenland 292 San Marino (Republic of) Zone 2, Spare Codes: 64 Zone 3 Code Country or Geographical Area 302 Canada 308 St. Pierre and Miquelon (French Dept. of) 310 United States of America 311 United States of America 312 United States of America 313 United States of America 314 United States of America 315 United States of America 316 United States of America 330 Puerto Rico 332 Virgin Islands (USA) 334 Mexico 338 Jamaica 340 French Antilles 342 Barbados 344 Antigua and Barbuda 346 Cayman Islands 348 British Virgin Islands 350 Bermuda 352 Grenada 354 Montserrat 356 St. Kitts and Nevis 358 St. Lucia 360 St. Vincent and the Grenadines 362 Netherlands Antilles 364 Bahamas (Commonwealth of the) 366 Dominica (Commonwealth of the) 368 Cuba 370 Dominican Republic 372 Haiti (Republic of) 374 Trinidad and Tobago 376 Turks and Caicos Islands Zone 3, Spare Codes: 68 Zone 4 Code Country or Geographical Area 404 India (Republic of) 410 Pakistan (Islamic Republic of) 412 Afghanistan (Democratic Republic of) 413 Sri Lanka (Democratic Socialist Republic of) 414 Burma (Socialist Republic of the Union of) 415 Lebanon 416 Jordan (Hashemite Kingdom of) 417 Syrian Arab Republic 418 Iraq (Republic of) 419 Kuwait (State of) 420 Saudi Arabia (Kingdom of) 421 Yemen Arab Republic 422 Oman (Sultanate of) Zone 4 (cont.) Code Country or Geographical Area 423 Yemen (People's Democratic Republic of) 424 United Arab Emirates 425 Israel (State of) 426 Bahrain (State of) 427 Qatar (State of) 428 Mongolian People's Republic 429 Nepal 430 United Arab Emirates (Abu Dhabi) 431 United Arab Emirates (Dubai) 432 Iran (Islamic Republic of) 440 Japan 441 Japan 450 Korea (Republic of) 452 Viet Nam (Socialist Republic of) 454 Hong-Kong 455 Macao 456 Democratic Kampuchea 457 Lao People's Democratic Republic 460 China (People's Republic of) 467 Democratic People's Republic of Korea 470 Bangladesh (People's Republic of) 472 Maldives (Republic of) Zone 4, Spare Codes: 65 Zone 5 Code Country or Geographical Area 502 Malay- sia 505 Australia 510 Indonesia (Republic of) 515 Philippines (Republic of the) 520 Thailand 525 Singapore (Republic of) 528 Brunei Darussalam 530 New Zealand 535 Guam 536 Nauru (Republic of) 537 Papua New Guinea 539 Tonga (Kingdom of) 540 Solomon Islands 541 Vanuatu 542 Fiji 543 Wallis and Futuna Islands 544 American Samoa 545 Kiribati (Republic of) 546 New Caledonia and Dependencies 547 French Polynesia 548 Cook Islands 549 Western Samoa Zone 5, Spare Codes: 78 Zone 6 Code Country or Geographical Area 602 Egypt (Arab Republic of) 603 Algeria (People's Democratic Republic of) 604 Morocco (Kingdom of) 605 Tunisia 606 Libya (Socialist People's Libyan Arab Jamahiriya) 607 Gambia (Republic of the) 608 Senegal (Republic of) 609 Mauritania (Islamic Republic of) 610 Mali (Republic of) 611 Guinea (Republic of) 612 C | te d'Ivoire (Republic of) 613 Burkina Faso 614 Niger (Republic of the) 615 Togolese Republic 616 Benin (People's Republic of) 617 Mauritius 618 Liberia (Republic of) 619 Sierra Leone 620 Ghana 621 Nigeria (Federal Republic of) 622 Chad (Republic of the) 623 Central African Republic 624 Cameroon (Republic of) 625 Cape Verde (Republic of) 626 Sao Tome and Principe (Democratic Republic of) 627 Equatorial Guinea (Republic of) 628 Gabonese Republic 629 Congo (People's Republic of the) 630 Zaire (Republic of) 631 Angola (People's Republic of) 632 Guinea-Bissau (Republic of) 633 Seychelles (Republic of) 634 Sudan (Republic of the) 635 Rwandese Republic 636 Ethiopia 637 Somali Democratic Republic 638 Djibouti (Republic of) 639 Kenya (Republic of) 640 Tanzania (United Republic of) 641 Uganda (Republic of) 642 Burundi (Republic of) 643 Mozambique (People's Republic of) 645 Zambia (Republic of) 646 Madagascar (Democratic Republic of) 647 Reunion (French Department of) 648 Zimbabwe (Republic of) 649 Namibia 650 Malawi 651 Lesotho (Kingdom of) 652 Botswana (Republic of) 653 Swaziland (Kingdom of) 654 Comoros (Islamic Federal Republic of the) 655 South Africa (Republic of) Zone 6, Spare Codes: 47 Zone 7 Code Country or Geographical Area 702 Belize 704 Guatemala (Republic of) 706 El Salvador (Republic of) 708 Honduras (Republic of) 710 Nicaragua 712 Costa Rica 714 Panama (Republic of) 716 Peru 722 Argentine Republic 724 Brazil (Federative Republic of) 730 Chile 732 Colombia (Republic of) 734 Venezuela (Republic of) 736 Bolivia (Republic of) 738 Guyana 740 Ecuador 742 Guiana (French Department of) 744 Paraguay (Republic of) 746 Suriname (Republic of) 748 Uruguay (Eastern Republic of) Zone 7, Spare Codes: 80 Recommendation E.213 TELEPHONE AND ISDN NUMBERING PLAN FOR LAND MOBILE STATIONS IN PUBLIC LAND MOBILE NETWORKS (PLMN) 1 Basic requirements 1.1 It should in principle be possible for any subscriber of the international telephone network or ISDN to call any subscriber of a public land mobile network. Note - Other constraints may exist (e.g., charging con- straints) 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 and accounting principles to be used. 1.3 It should be possible for each Administration to develop its own independent numbering plan for mobile stations 1.4 The numbering plan should not prohibit the development of interconnected public land mobile networks to form 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) without changing the telephone or ISDN number allocated to the station and vice versa. 1.6 It should be possible, in principle, for mobile sub- scribers to roam without constraints among PLMNs. 1.7 The numbering plan should take into account human factors such as the compatibility with user dialling procedures for the most predominant network in each country, i.e. the public switched telephone network (PSTN), and the 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 requirements within these networks. 2 National (significant) mobile number The national (significant) mobile number could have the fol- lowing form depending upon the way in which the land mobile number- ing plan is integrated with the telephone numbering or ISDN plan : i) The land mobile numbering plan might be fully integrated with the telephone numbering or ISDN plan. In this case the mobile stations will be allocated a subscriber number as defined in Recommendation E.160, S 5. The national (significant) mobile number then consists of the trunk code or national destina- tion code allocated to the numbering area corresponding to the home area of the mobile station followed by the subscriber number allo- cated to it. ii) The public land mobile network might be regarded as a separate numbering area within the telephone network or the ISDN. In this case the national (significant) mobile number will consist of the trunk code or national destination code allo- cated to the PLMN and the subscriber number within the PLMN. 3 Mobile station roaming number 3.1 The mobile station roaming number is a number allocated to a land mobile station for the purpose of rerouting calls to that station when it has roamed out of the area covered by the PLMN [maritime switching centre MSC)] in which the station is per- manently registered. 3.2 The composition of the mobile station roaming number may vary depending upon where the mobile station is temporarily located and depending upon the method by which it is allocated. 3.3 One acceptable method for allocating mobile station roam- ing numbers is for the foreign PLMN (i.e. the network in which the mobile station is currently located) to allocate a temporary national (significant) mobile number to the visiting mobile station within its own numbering plan. The mobile station roaming number would thus have the following composition: (country code of the country in which the foreign PLMN is located) + (temporary national (significant) mobile number). The mobile station roaming number is transferred to the home PLMN of the mobile station. Note - A second method has been identified where the foreign PLMN uses a separate numbering plan for visiting mobile stations where the number used is composed of a prefix indicating a foreign station followed by the country code of the country in which the station is permanently registered and the national (significant) mobile number in its home network The home PLMN of the mobile station must in this case inform the foreign PLMN about the mobile station roaming number. The possible use of this method requires further study considering that it may impose a requirement for digit capacity greater than 12 digits for the 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 fixed and/or mobile subscriber. In this situation, the number would only be used within PLMNs and the PSTN/ISDN for rerouting of calls to a mobile station that had registered with a visited PLMN. The number would then not be used for direct routing of a call from a fixed (or mobile) sub- scriber to the mobile station. 3.5 This approach would allow the reallocation to another mobile station of the roaming number as soon as the station to which the roaming number had been originally allocated had left the visited PLMN. It will of course be desirable 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 switching centres will need 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 analysis _________________________ 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 numbering plan. In respect to routing, charging and accounting, the require- ments on number analysis given in Recommendation E.163 for the PSTN and Recommendation E.164 for the ISDN should also be met for calls to mobile stations.