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Device for the intervention of a third party participant, in particular a telephone operator, established in a connection between two call participants in a telephone exchange where time-division multiplexing is used.
Device for the intervention of a third party participant, in particular a telephone operator, established in a connection between two call participants in a telephone exchange where time-division multiplexing is used.
Electronic time switching telephone system so that the operator can listen in, with the ability to break-in and talk to the correspondents connected to the corresponding exchange, the system comprises an interface modem between the operator's line transformer and the connection network.
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