Patent ID: 7978692

Claim:
An integrated cross-switching unit, connected with a TDM (Time Division Multiplexing) line board and a data service processing unit, wherein the integrated cross-switching unit comprises: a bus identification module; a cross-connecting module; a mapping/de-mapping module; an encapsulation/dc-encapsulation module coupled with the mapping/de-mapping module via at least one physical channel; and a packet scheduling module; wherein the bus identification module identifies a traffic source by reporting a slot number corresponding to the data service processing unit and a unit type of the data service processing unit to a control unit via the data service processing unit and by identifying the type of a bus connected with the data service processing unit as a packet bus, transmits traffic from the TDM line board to the cross-connecting unit, and transmits packets from the data service processing unit to the packet scheduling module; the cross-connecting module schedules time slots of the traffic from the TDM line board; the mapping/de-mapping module de-maps the traffic from the cross-connecting module, and to map traffic from the encapsulation/de-encapsulation module; the encapsulation/de-encapsulation module de-encapsulates the traffic from the mapping/de-mapping module, and encapsulates the packets from the packet scheduling module; and the packet scheduling module schedules the packets from the encapsulation/de-encapsulation module and/or the bus identification module, and transmits the scheduled packets to the data service processing unit via the packet bus or to the TDM line board via the encapsulation/de-encapsulation module, the mapping/de-mapping module and the cross-connecting module in turn; wherein for GFP (Generic Framing Procedure) frames from different physical channels, the encapsulation/de-encapsulation module finds a CID (Channel ID) field in an extended header of each GFP frame and directly forwards the data GFP frame with the CID field into a corresponding physical channel.