Abstract:
Systems and methods performed by an IP telephony device or an element of an IP telephony system mask the data contained in data packets bearing the media of an IP telephony communication to prevent an Internet service provider from identifying the data packets as carrying the media of an IP telephony communication. The systems and methods can also modify the size of data packets and/or modify the data transfer rate of a stream of data packets bearing the media of an IP telephony communication to prevent an Internet service provider from identifying the stream of data packets as bearing the media of an IP telephony communication.
Abstract:
A method of operating an internet-based telephony system comprises (1) determining that a telephony device associated with a customer of the internet-based telephony system has access to service of the internet-based telephony system; (2) sending a first location update signal to a public land mobile network associated with the customer; (3) receiving an indication that the public land mobile network associated with the customer no longer considers the internet-based telephony system as being the network visited by the telephony device associated with the customer; (4) determining the telephony device associated with the customer and the internet-based telephony system are in data communication, and (5) sending a second location update signal to the public land mobile network associated with the customer to register again the internet-based telephony system as the network visited by the telephony device associated with the customer.
Abstract:
A method of operating an internet-based telephony system (20) comprises determining that a telephony device (30) associated with a customer has access to service to the internet-based telephony system (20); and sending a location update signal to a public land mobile network (32) associated with the customer. The location update signal is configured to include an identification of the internet-based telephony system (20) as a network visited by the telephony device (30) associated with the customer. Upon the internet-based telephony system (20) receiving from the public land mobile network (32) an indication of an incoming communication directed to a called number associated with an account of the customer which includes the telephony device (30), the method further includes the internet-based telephony system (20) providing the public land mobile network (32) with a roaming number for the telephony device, and upon receiving the incoming communication and the roaming number from the public land mobile network (32), routing the communication through the Internet to a device included in the customer's account.