CONTROL CIRCUIT FOR CAUSING CYCLIC APPLICATION OF SEALING CURRENT FOR LOCAL LOOPS SUPPORTING DATA NETWORK TELEPHONY

摘要

A system for causing application of sealing current to one or more local telephony loops has a current source; a switching interface for connecting the current source to the one or more telephony loop interfaces; and a machine-readable instruction accessible to the switching interface, the instruction providing intelligence to the switching interface for identifying the one or more loops to be serviced, the time period for current application to each loop serviced, and a sequence order when more than one loop is serviced.