System for detecting occupation and exchange of signals in telecommunication networks using shared telephone lines. (Machine-translation by Google Translate, not legally binding)

摘要

System of detection of occupation and exchange of signals of telecommunication networks using shared telephone lines.it is intended to connect one or several lines, of n lines, to various modules belonging to a group of n modules, which may have each module m signal sources, so that the n lines are connected to each one of the n modules, these are constituted by a unit of switching of lines, a unit of entry/exit of high impedance to not alter the information present in the same and a unit of enabling and timing receiving signals of a signaling generator provided in the own module and being the enabling unit connected together with the switching to the m sources of the module, such timing unit generates timings of emission and signal detection. (Machine-translation by Google Translate, not legally binding)