Call redirection methods in a packet based communications network
AssigneeNortel Networks Limited
InventorsNishanthan M. T. Perinpanathan, Alan S. Frank, Paul Thomas Taylor
Life of this patent
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Abstract
Methods are provided which employ call redirection to provide services such as personal mobility, terminal mobility and call distribution in a packet-based network such as the Internet, or an intranet.
Claims10
A personal host operable to be connected to a packet based communications network at a home IP address, the personal host being operable to maintain a care-of IP address to which calls originally directed to the home IP address are to be redirected, the personal host comprising a call redirector operable to respond to a call setup request from a calling host with a call setup reply which includes the care-of IP address.
A call receiving and distribution terminal for use with a plurality of peer computing devices connected to a packet based communications network, each computing device having an IP address, the call receiving and distribution terminal having a main IP address and comprising a call redirector operable to respond to a call setup request addressed to the main IP address from a calling host with a call setup reply which includes a redirecting IP address consisting of the IP address of one of the plurality of peer computing devices.
A peer computing device for use in a call distribution system consisting of a plurality of peer computing devices, each computing device having an IP address, and a call receiving and distribution terminal having a main IP address, the peer computing device being operable to receive a message containing an offer to accept a call and to respond to this message with an accept call message indicating a willingness to accept the call and to send a call setup reply in response to a call setup request subsequently received from a calling host.
Dependencies are inferred from the claim text.