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Packet-switched telephony call server

  • US 7,145,900 B2
  • Filed: 05/31/2001
  • Issued: 12/05/2006
  • Est. Priority Date: 05/31/2001
  • Status: Expired due to Fees
First Claim
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1. A system for providing telephony service over the Internet, comprising in combination:

  • a call client downloadable to a user device located on the Internet, the call client communicating both media and first call-control data across the Internet according to a non-native protocol, the media including voice data, wherein the call client includes a port scan module to identify Internet Protocol ports open for communication;

    a database for determining whether a user associated with the user device is authorized to communicate via a call with a second user accessible through a Public-Switched Telephone Network (PSTN);

    a gateway located at an interface between the Internet and the PSTN, the gateway communicating according to a native protocol;

    a Packet-switched Telephony Service Provider (PTSP) both the media and the first call-control data across the Internet with the call client according to the non-native protocol, the PTSP further communicating both the media and second call-control data across the Internet to the gateway according to the native protocol so that the call can be connected to the PSTN; and

    a call logger associated with the PTSP and tracking calls.

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