System and method for a reverse invitation in a hybrid peer-to-peer environment

摘要

An improved system and method are disclosed for peer-to-peer communications. In one example, the method enables an endpoint to send a reverse invitation in response to an incoming call. The reverse invitation may be used to set up an alternate communication session rather than maintaining the incoming call.

主权项

1. A method for a reverse invitation comprising:
receiving, by a first endpoint, an inbound call from a second endpoint, wherein the inbound call is received via one of a cellular network and a public switched telephone network; determining, by the first endpoint, that the second endpoint is currently available via an Internet Protocol (IP) peer-to-peer network based on presence information identifying an availability of the second endpoint; sending, by the first endpoint, an invitation message to the second endpoint via the peer-to-peer network in response to receiving the inbound call and after determining that the second endpoint is available, wherein the invitation message requests that the second endpoint establish a peer-to-peer communication session with the first endpoint via the peer-to-peer network; determining, by the first endpoint, whether an acknowledgement message has been received from the second endpoint in response to the invitation message; and continuing, by the first endpoint, the inbound call with the second endpoint on the one of the cellular network and the public switched telephone network on which the inbound call was received if the acknowledgement message has not been received by the first endpoint.