џWPCL ћџ2BJ|xа АH аа АА X агга ХА6p&А6p&Х аеЄ† а Hр аааУ Уб cмˆ4 PŽТ б Fascicle VII.2 Р-Р Rec. U.44 PAGE1 Єее† а HH аааУ Уб cмˆ4 PŽТ бPAGE2 Fascicle VII.2 Р-Р Rec. U.44 еа HH ааЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџHpи P Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаа X  аУ Уб cмˆ4 PŽТ бRecommendation U.44 аЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџH јP Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаСр87Сб cмˆ4 PŽТ бMULTIР-РADDRESS CALLS IN REAL TIME FOR BROADCAST PURPOSES Ср8AСIN THE INTERNATIONAL TELEX SERVICEФ Ф аЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџHpи P Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаСр87СУУб cмˆ4 PŽТ б(MalagaР-РTorremolinos, 1984; amended at Melbourne, 1988)ФФ аЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџHјP Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаТа ТThe CCITT,ЦЦ аЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџHpи P Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаУУconsidering а H ааЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџH јP Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаФФС  С(a)СјСthe definitions of multiР-Рaddress and broadcast callsй-€ multiР-Рaddress and broadcast calls-йб cмˆ4 PŽТ б; (Supplement No. 2 to FР-РSeries Recommendations) аЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџHpи P Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаС С(b)СpСthat new systems are capable of providing broadcast facilities, thereby permitting a telex subscriber to set up a call to a list of destinations such that signals transmitted by the originating subscriber are received virtually simultaneously by the called subscribers; С С(c)СpСthat one, or more, of the destinations could be an international destination; С С(d)СpСthe provisions of Recommendation F.61 [1] relating to the chargeable duration; С С(e)СpСthe provisions of Recommendation D.61 for charging and accounting purposes; С С(f)СpСthe provisions of Recommendation U.15 on signalling interworking rules; С С(g)СpСthe provision of Recommendation U.1 on the receipt of text before or after the answerback code; С С(h)СpСthe provisions of Recommendation U.41 on changed address interception and call redirection, УУб cмˆ4 PŽТ бand further recognizing а H аФФС Сthat the calling and clearing procedures to be used in the originating exchange are a national matter, УУunanimously recommends а H аФФС Сthat the following general principles be adopted when setting up broadcast calls in the international telex service: а H аУ У1Ф ФС СThe settingР-Рup of the various outgoing calls in a broadcast call by the originating exchange preferably be done concurrently rather than sequentially in order to minimize the holding time of international circuits. С СWhere, however, calls are set up sequentially, then priority shall be given to the establishment of the national calls first. а H аУ У2Ф ФС СThe answerback codes of each called subscriber shall be returned to the originating exchange in accordance with the relevant Series U Recommendations. How the received sequence of answerback codes is to be sent to the calling subscriber is a national matter. С СReceipt of a service signal shall be handled in a similar manner. The method of informing the calling subscriber of the received service signals, including the indication of any additional information received in а H аaccordance with РSР 10.1.2 of Recommendation U.1 is a national matter. This also applies to the RDI condition, in which case the call will not be extended to a redirected subscriber. а H аУ У3Ф ФС СThe standard textУ У BCT MOMФ Ф, in accordance with Recommendation F.60 [2], should be transmitted by the calling exchange to each called subscriber 150 ms after receipt of the respective answerback codes. У У4Ф ФС СShould the national network of the calling subscriber also provide a campР-Рon service, then this service should be disabled in the case of broadcast calls. а H аУ У5Ф ФС СThe maximum number of international addresses in a broadcast call shall be limited to 5. а H аТа ТТ№ ТС€ СС€ HСУ У6Ф ФС Сa)СpСHaving returned the list of received answerback codes (or service signals), the originating exchange shall advise the calling subscriber to commence the transmission of the message by the return of the standard text,У У GAФ Ф, to his terminal in accordance with Recommendation F.60 [2].ЦЦ а H аТа ТТ№ ТТhpТС€СThe broadcast call should now be throughР-Рconnected from the calling subscriber to all called parties.ЦЦ а H аТа ТТ№ ТС€ Сb)СpСIt is recommended that the calling subscriber commence the transmission by forwarding his own answerback sequence to all called parties using the Here Is key on his terminal.ЦЦ а H аТа ТТ№ ТС€ Сc)СpСAlternatively, the originating exchange, if it can be so programmed, shall cause the transmission of the calling subscriber's answerback sequence to all called subscribers prior to the return of theУ У GAФ Ф signal.ЦЦ а H аУ У7Ф ФС СIt shall be possible for any of the called subscribers to clear his individual connection in accordance with the relevant Series U Recommendations. С СShould all called subscribers clear their connections, then the originating exchange shall return the clearing signal to the calling subscriber. а H аУ У8Ф ФС СHowever, it shall not be possible for any of the called subscribers to interrupt the transmission of signals from the calling subscriber to the other called parties. У У9Ф ФС СThe access by subscribers to an exchange in another country for the purpose of settingР-Рup a broadcast call shall not be permitted. The provisions of Recommendation U.6 shall apply. а H аУ У10Ф ФС  СEach individual international connection shall be charged in accordance with the provisions of Recommendation F.61 [1]. а H аУ У11Ф ФС  СClearing of a broadcast call, in response to the clear signal from the originating subscriber, shall comply with the relevant UР-РSeries Recommendations. С СFor new systems, and as far as possible for existing ones, should the originating subscriber wish to know those parties who cleared prematurely (and, by implication, those who received the complete message) then this should be signalled by terminating the transmitted text with the letter shiftУ У MMMMФ Ф. The originating exchange will then clear forward in the normal way, list those subscriber, if any, who cleared early to the originating subscriber and clear backwards. С СУУNoteФФ Р-Р Application of this procedure to destinations which use code conversion facilities is a matter for further study. аЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџH јP Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬаТX  ТТX јТ‚У УReferencesФ ФЦЦ а H ааЬџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџHpи P Ј XА`ИhР!(#џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџЬа[1]Тh  ТCCITT Recommendation УУThe chargeable duration of a telex callФФ, Rec. F.61.ЦЦ а H а[2]Тh  ТCCITT Recommendation УУOperational provisions for the international telex serviceФФ, Rec. F.60.ЦЦ