Patent ID: 7505477

Claim:
A method for processing data in a digital transmission network, comprising: classifying data frames by a virtual interface device; finding at least one of a virtual private device, a virtual bridge device and a resilient packet ring device according to a data type number inserted in the classified data frames via a data processing and dispatching device; transmitting, via the data processing and dispatching device, the classified data frames from the virtual interface device to the at least one of a virtual private device, a virtual bridge device and a resilient packet ring device for processing according to the data type number, wherein the data frames are transmitted from the data processing and dispatching device to the at least one of the virtual private device, the virtual bridge device and the resilient packet ring device via an inter-device interface configured therebetween; obtaining, by the virtual interface device, processed data frames via the data processing and dispatching device; finding a user-network interface (UNI) or a network-network interface (NNI) according to the data type number via the data processing and dispatching device and; outputting the processed data frames to the UNI or NNI.