Method and apparatus for providing forwarding on ring-no-answer for remote telephone extensions using voice over packet-data-network systems (VOPS)

摘要

A method is described that comprises receiving a ringing voltage or tip-ground signal at a first telephone interface. Then, indicating to a control system at an interface that the ringing voltage or tip-ground signal is appearing at the first telephone interface. Then, calling a remote device over a packet data network while maintaining the first telephone interface in an on-hook state. The control system causes the calling in response to the indicating.