Circuit arrangement for setting up conference calls in a digital time-division multiplex telecommunications switching center
作者： Bernhard Gloess
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摘要: A circuit arrangement sets up conference calls in a digital time-division multiplex telecommunications switching center. For setting three-party connections, unit (KE) having PROM is provided wherein are stored all possible, companded sum and difference values of individual contributions respectively two participants. These selected by the as read selection addresses. The thus realizes functions linearization companding that performed separate sub-units previous units.
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