1959 - History of Ericsson - History of Ericsson

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130 Priority The switchboard is designed for secret calls. Extension no. 2, however, has a right-of-way facility permitting entry to an engaged line. The connection is set up, after receipt of busy tone, by the priority extension dialling digit 2, which interconnects the two link circuits. The two conversing parties are warned by a faint tone that a priority extension is on the line. The latter may either request the wanted party to ring back after his conversation is completed or may ask both parties to replace their handsets. In such case the dialled number is automatically rung in the normal manner, and when the party replies an undisturbed conversation can take place. Extension number 2 should be allotted to the person who most needs to obtain quick contact with other users of the system. Summary AMD 20101, with 15 extensions and 2 link circuits, 1. takes up little space 2. operates silently 3. is thoroughly reliable 4. requires no routine maintenance 5. can be connected to all normal mains voltages and frequencies 6. permits secret calls 7. has priority for one extension 8. uses the two link circuits alternately, so ensuring more even utilization of the equipment 9. has forced release of the register, so that a short-circuited extension line does not block the switchboard.
NEWS from All Quarters of the World Important Telephone Contract from United Arab Republic In stiff competition with two other world telephone enterprises. L M Ericsson has secured a large order from the United Arab Republic. Under this contract Ericsson will deliver automatic telephone exchange equipment for Cairo and five other towns in the Nile Delta, and will also participate in a planned Egyptian telephone factory for the manufacture of certain Ericsson products on licence. The negotiations, which have been in progress for some time, culminated in the signing of the contract at the beginning of November during the visit to Cairo of Mr. Sven T. Aberg. Automatic telephone exchange equipment will be installed to a value of 26.4 million kronor, catering initially for 44,000 subscribers, in Cairo, 20,000 local lines are to be delivered for the Opera Exchange, and 10,000 lines for the Abassia Exchange. Local exchange equipment is also to be delivered to the towns of Benha, Damanhour, Mehalla El Kobra. Mansoura and Tantah in the Nile Delta. The contract also includes automatic trunk switching centres for traffic between Cairo, Alexandria and the five Delta towns. The delivery of exchange epuipment is to start in roughly one year's time, and the cut-overs are planned to take place within two to three-and-a-half years. The telephone exchange contract was signed by the Telephone Administration of the United Arab Republic. The contract for local manufacture was concluded with the General Organization for Executing the Five Year Industrial Plan. The United Arab Republic, with engineering assistance from L M Ericsson, will build a factory for the production on licence of automatic exchange equipment of crossbar type, telephone instruments, private automatic exchanges, and manual switchboards for local and long distance traffic. Ericsson will train Egyptian technicians for future work in operating the exchanges and in works management. Ericsson has delivered telephone equipment to Egypt for more than 50 years. Among other equipment delivered since the war may be mentioned an automatic 500-switch type of exchange installed in Suez in 1951. Even at that time the Egyptian government was aware of the necessity for a highly modern automatic telephone system to keep pace with the rapid industrial expansion of the country. An expert commission was appointed which, during a period of several years, made a study of the various world telephone systems available. The outcome is now seen in the recent contract awarded to L M Ericsson. (Above) H.E. Moustapha Khalil, Minister of Communications of the U.A.R. and Mr. Sven T. Aberg signing the telephone exchange section of the contract. Seated at far left is the Director General of the U.A.R. Telephone Administration, Mahmoud Mohamed Riad. (Below) H.E. Aziz Sedki, Minister of Industry, shaking hands with Mr. Aberg after signing the factory section of the contract.
Page 1: 4 1959
Page 4 and 5: Ericovox, the One-Piece Loudspeakin
Page 6 and 7: Fig. 3 X 8156 Block schematic of co
Page 8 and 9: Fig. 5 x 8163 The Ericovox, L M Eri
Page 10 and 11: Fig. 8 X 2443 Sending frequency res
Page 12 and 13: 108 The Ericovox meets the requirem
Page 14 and 15: Fig. 3 Grouping of components in wi
Page 16 and 17: Fig. 9 X 8132 Case with pyramid-sha
Page 18 and 19: Fig. 12 X8134 Instrument with base
Page 20 and 21: Fig. 18 X8135 The locations of the
Page 22 and 23: Gothenburg Automatic Transit Exchan
Page 24 and 25: Fig. 3 x 8181 Block schematic of gr
Page 26 and 27: Fig. 6 122 x 8180 Block schematic o
Page 28 and 29: Fig. 8 X 2472 Link circuits for ori
Page 30 and 31: Fig. 10 X8182 Traffic supervisor's
Page 32 and 33: Fig. 2 X8167 Relay switchboard AMD
Page 36 and 37: Crossbar Exchange Installed on Larg
Page 38 and 39: L M Ericsson to Undertake First C.T
Page 40: The Ericsson Group Associated and c

1959 - History of Ericsson - History of Ericsson

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