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Packet-switched telephony call server

  • US 9,350,767 B2
  • Filed: 06/24/2011
  • Issued: 05/24/2016
  • Est. Priority Date: 05/31/2001
  • Status: Active Grant
First Claim
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1. A method comprising:

  • registering a user device with a packet switched telephony service provider (PTSP);

    receiving a call request at the PTSP according to a non-native protocol from the user device, wherein the non-native protocol is non-native to a gateway and the call request includes a telephone number corresponding to a public-switched telephone network (PSTN) subscriber;

    translating the call request from the non-native protocol to a native protocol that is native to the gateway and prior to transmitting the call request to the gateway;

    transmitting the translated call request from the PTSP to the gateway according to the native protocol, wherein the gateway forwards the call request to the PSTN subscriber;

    causing a call to be established between the user device and the PSTN subscriber;

    sending media data for the call between the user device and the PSTN subscriber via a first communication channel; and

    sending call control data for the call via a second communication channel different than the first communication channel, the call control data including call ping data sent while the call is in progress.

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