Patent ID: 7315615
Filing Date: 2008-01-01
Classification: H04M,H04Q

Abstract:
1. A telephone line switch comprising: a first pair of terminals for connection to a customer-premises telephone line; a second pair of terminals for connection to a first telephone network through a first line interface; a third pair of terminals for connection to a second telephone network through a second line interface; a switching apparatus for automatically connecting said first pair of terminals to said second pair of terminals or to said third pair of terminals, said apparatus comprising means for operating said switching apparatus including signal monitoring electronic circuitry coupled to said first telephone network, signal monitoring electronic circuitry coupled to said second pair of terminals, electronic control circuitry, processing means and software means for causing said switching apparatus to automatically selectively connect said first pair of terminals to said second pair of terminals or to said third pair of terminals based on a weight determined by each of said signal monitoring electronic circuitry, wherein each of said second and third pair of terminals are further provided with a line interface having an impedance greater than 1MΩ, said line interface being located between a respective one of said first and second telephone networks and said switching apparatus.