Patent ID: 7697541

Claim:
A service scheduling unit, which establishes a data channel connection with one end of a cross-connecting unit in a digital communication system, for scheduling packet services from a data service access processing unit and a line unit which establish a data channel connection with the other end of the cross-connecting unit, comprising: a de-mapping module, adapted to receive a virtual container or virtual container group from the cross-connecting unit in the digital communication system, and to extract an encapsulated data stream from the virtual container or the virtual container group for completing separation of the encapsulated data stream therefrom; a decapsulating module, adapted to decapsulate the encapsulated data stream from the de-mapping module into one or more independent data frames; a packet scheduling module with multiple output ports, adapted to receive the decapsulated data frame from the decapsulating module, read a label from the data frame, determine a corresponding output port based upon the label, and forward the data frame via the output ports; an encapsulating module, adapted to receive the decapsulated data frame forwarded by the packet scheduling module and to encapsulate the data frame at the Data Link Layer; and a mapping module, adapted to receive the encapsulated data frame and map the data frame to the virtual container or the virtual container group of the cross-connecting unit.