Packet-switched telephony
First Claim
Patent Images
1. A method comprising:
- receiving a call request from a user device at a packet switched telephony service provider (PTSP), the call request including a telephone number corresponding to a public-switched telephone network (PSTN) subscriber;
transmitting the call request from the PTSP to a gateway for forwarding to the PSTN subscriber; and
causing a call to be established between the user device and the PSTN subscriber, the call including media data and call control data, the media data including at least one packet with a network address corresponding to the gateway, the call control data included in at least an additional packet with an additional network address corresponding to the PTSP, the call control data including call ping data sent while the call is in progress, the ping data comprising one or more signal strength indicators.
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Abstract
A system and method for providing packet-switched telephony service. The system provides call control, signaling, and/or delivery of voice, video, and other media in substantially real time. One embodiment of the system includes a call client application on a user device, and a call server located at a packet-switched telephony service provider. The call server is preferably operable to communicate with the call client in a non-native protocol and with the gateway in a native protocol.
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Citations
20 Claims
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1. A method comprising:
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receiving a call request from a user device at a packet switched telephony service provider (PTSP), the call request including a telephone number corresponding to a public-switched telephone network (PSTN) subscriber; transmitting the call request from the PTSP to a gateway for forwarding to the PSTN subscriber; and causing a call to be established between the user device and the PSTN subscriber, the call including media data and call control data, the media data including at least one packet with a network address corresponding to the gateway, the call control data included in at least an additional packet with an additional network address corresponding to the PTSP, the call control data including call ping data sent while the call is in progress, the ping data comprising one or more signal strength indicators. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A device comprising:
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one or more processors; and hardware storing software that is executable by the one or more processors to perform operations including; receiving a call request from a user device at a packet switched telephony service provider (PTSP), the call request including a telephone number corresponding to a public-switched telephone network (PSTN) subscriber; transmitting the call request from the PTSP to a gateway for forwarding to the PSTN subscriber; and causing a call to be established between the user device and the PSTN subscriber, the call including media data and call control data, the media data including at least one packet with a network address corresponding to the gateway, the call control data included in at least an additional packet with an additional network address corresponding to the PTSP, the call control data including call ping data sent while the call is in progress, the ping data comprising one or more signal strength indicators. - View Dependent Claims (13, 14, 15, 16)
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17. A system comprising:
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a processor; and a computer-readable storage memory storing instructions that when executed by the processor implement; a front end module to receive a call request from a user device at a packet switched telephony service provider (PTSP), the call request including a telephone number corresponding to a public-switched telephone network (PSTN) subscriber; a call handler module to transmit the call request from the PTSP to a gateway for forwarding to the PSTN subscriber; and a call director module to cause a call to be established between the user device and the PSTN subscriber, the call including media data and call control data, the media data including at least one packet with a network address corresponding to the gateway, the call control data included in at least an additional packet with an additional network address corresponding to the PTSP, the call control data including call ping data sent while the call is in progress, the ping data comprising one or more signal strength indicators. - View Dependent Claims (18, 19, 20)
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Specification