15-07-1988 дата публикации
Номер: ATE35494T1
1. A circuit arrangement for the transmission of signals between subscriber lines (Ltg1 to Ltgn) and at least one transmission line (e.g. PCM3), which is connected to a switching device, of a service-integrated telecommunications system, in which control - and/or data signals occur on the subscriber lines at a first, relatively low transmission rate, and occur on the respective transmission line in time slots of time channels which comprise time slots which occur in cyclic repitition in consecutive pulse frames and which permit the transmission of signals at a second transmission rate which is higher than the first transmission rate, and in which the subscriber lines (Ltg1 to Ltgn) are connected to the respective transmission line (e.g. PCM3) via a concentrator (K) which on the one hand emits the signals, with which it is supplied via the individual subscriber lines (Ltg1 to Ltgn), via the respective transmission line in time channels available for the transmission of said signals, and which on the other hand forwards the signals with which it is supplied on the respective transmission line (e.g. PCM3) in time channels available for the transmission of said signals to the respective subscriber line (e.g. Ltg1), characterized in that on the respective transmission line (e.g. PCM3) only one respective time channel of the time channels provided for the signal transmission is available for the transmission of control signals and data signals in each transmission direction.
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