Method and Apparatus for Relaying Calls
First Claim
Patent Images
1. A method implemented by a user terminal for a calling party of placing a call from a calling party to a called party remotely located from the calling party, said method comprising:
- determining the availability of a called party user terminal on a packet data communication network;
establishing a call with the called party user terminal over the packet data network if the called party user terminal is available on the packet data network; and
if the called party user terminal is not available on the packet data network, identifying a third party user terminal available to relay the call and requesting the third party user terminal to relay said call from the calling party user terminal to the called party user terminal over an alternate communication network.
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Accused Products
Abstract
A dual mode user terminal for a calling party can make calls over both a conventional cellular network and a packet data network using VoIP protocols. If the called party is not available to receive a VoIP call over the packet data network, the user terminal for the calling party can request a third party user terminal available on the packet data network to relay the call between the calling party and the called party.
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Citations
16 Claims
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1. A method implemented by a user terminal for a calling party of placing a call from a calling party to a called party remotely located from the calling party, said method comprising:
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determining the availability of a called party user terminal on a packet data communication network; establishing a call with the called party user terminal over the packet data network if the called party user terminal is available on the packet data network; and if the called party user terminal is not available on the packet data network, identifying a third party user terminal available to relay the call and requesting the third party user terminal to relay said call from the calling party user terminal to the called party user terminal over an alternate communication network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A dual mode user terminal comprising:
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a first communication interface for communicating over a mobile communication network; a second communication interface for communicating over a packet data network; a control processor configured to; determine the availability of a called party user terminal on the packet data network; establish a call with the called party user terminal over the packet data network if the called party user terminal is available on the packet data network; and if the called party user terminal is not available on the packet data network, identify a third party user terminal available to relay the call and request the third party user terminal to relay said call from the calling party user terminal to the called party user terminal over the mobile communication network. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification