Patent ID: 6683951
Filing Date: 2004-01-27
Classification: H04M

Abstract:
A transceiver adapted to maintain access to lifeline services in the event of operating power interruption, the transceiver having at least one telephone interface adapted for the connection of a telephone set to a wire loop to provide telephone service and at least one telephone interface adapted for the connection of a telephone set to a telephone service derived from a wideband service channel supported by the wire loop, comprising:switchover circuitry for disconnecting the at least one telephone interface associated with the wideband service channel from wideband service channel related circuitry in the transceiver in the event of power interruption, and connecting the at least one telephone interface associated with the wideband service channel with the telephone interface connected to the wire loop to enable calls to be completed from any telephone connected to the transceiver during the power interruption; and a control device for controlling the switchover circuitry so that the switchover circuitry connects the at least one telephone interface associated with the wideband service channel with the telephone interface connected to the wire loop whenever telephone service on the wideband service channel is not operational, and further controlling the switchover circuitry so that connection of the telephone sets associated with the service channel to circuits associated with the service channel is only restored when telephone service over the wideband service channel is operational, regardless of when power is restored to the transceiver.