THE object of the automatic telephone exchange is to dispense with the assistance of a third party in making connection between two subscribers. Those whp are at all familiar with the complexity of ...

The Times, London, stated that automatic telephone exchanges are about to be adopted in London. The Post Office is preparing specifications for the first three exchanges, which will not, however, be ...

Over 80 percent of Azerbaijani automatic telephone exchanges have been overhauled and have been made electronic, Azerbaijani Deputy Communication Minister Elmir Valizade said. "The overhaul is going ...

AT an ordinary or manual telephone exchange, as is generally known, the subscribers' lines terminate on “jacks,” and are put through to each other by means of “plugs” and flexible conductors. The ...