Patent ID: 8625246
Filing Date: 2014-01-07
Classification: H04M

Abstract:
1. A Digital Subscriber Line (DSL) protection circuit, comprising: a DSL and Plain Old Telephone Service (POTS) broadband and narrowband mixed signal port; a narrowband POTS port; and a splitter, wherein the DSL and POTS broadband and narrowband mixed signal port is connected to the narrowband POTS port through the splitter, wherein a restorable current-limited component for limiting abnormal current is cascaded with a line containing an input end or an output end of the splitter, wherein the line on which the splitter and the restorable current-limited component are cascaded is connected in parallel with a voltage-limited component for bypass conduction of the splitter, and wherein an overcurrent fuse component is cascaded with a line containing the DSL and POTS broadband and narrowband mixed signal port or a line containing the narrowband POTS port.