| 摘要 |
<p>The switching system reduces undue loading of contacts during the cutting-in process. The system allows a call to be routed to a subscriber in a PBX, via instructions from the central controller, by timed, controlled connection and disconnection of the acoustic signal to the signal path of the respective, addressed subscriber station or addressed connecting link. Comparators in the central control unit allow the control instructions required for connecting through in a connecting link and/or via the coupling point contacts of a coupling network, to become effective only after the ringing action is converted to a tripping action.</p> |
