Patent ID: 8402122

Claim:
A communication method of a universal plug and play (UPnP) control point (CP) device, the method comprising: discovering, by the control point (CP) device, a service status of an active remote access server (RAS) device that provides a remote access client (RAC) device of a remote network, with a remote access service; discovering, by the CP device, a neighboring RAS device that provides the remote access service in a home network according to the discovery result of a service status of the active RAS device; and transmitting, by the CP device, identification information of the discovered neighboring RAS device to an Internet gateway device (IGD) of the home network, wherein the transmitting, by the CP device, the identification information of the discovered neighboring RAS device to the IGD comprises: when the CP device is in the home network, transmitting, by the CP device, the identification information of the discovered neighboring RAS device to the IGD so that the IGD stops forwarding remote connection data for the remote access service from the RAC device to the active RAS device, and forwards remote connection data from the RAC device to the discovered neighboring RAS device.