Packet-switched telephony call server

摘要

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.

主权项

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.