COMMUNICATION SYSTEM CONTROL TRANSFER ARRANGEMENT

摘要

Control transfer arrangement for a communication system including a switching system wherein a marker applies temporary hold signals to establish temporary connections between line circuits and register junctors while also transmitting information signals to a data processor. Logic circuits are provided for responding to instruction signals from the data processor and to signals from the register junctors to develop sustaining hold signals which are applied to sustain connections through the switching system and to permit release of the marker after each connection is established. Important features relate to the form of the logic circuits, to the use of memory means and multiplex circuitry to permit use of common logic circuits and to the provision of timer means for operating trouble indicating means when both conditions required for a sustaining hold signal are not established within a certain length of time after one is established.