Patent ID: 6347075
Filing Date: 2002-02-12
Classification: H04M

Abstract:
A fail safe mechanism for a subscriber link over a conductor connecting a subscriber server with at least one telephone device to a telephone network facility, comprising:a fail safe connection in said subscriber server for said at least one telephone device, said fail safe connection being switchable between a normal position connecting said at least one telephone device to said subscriber server and a backup position connecting directly to said conductor; said telephone network facility having a telephone network termination configured to connect an analog telephone; a network interface terminating a link layer of said subscriber link at said telephone network facility; a switch on said network interface such that said conductor is switchable between said network interface and said termination, whereby said at least one telephone device is connectable to said telephone network termination when said fail safe connection is in said backup position; and an analog interface in one of said subscriber server and said at least one telephone device connected to permit said at least one telephone to function as an analog telephone.