| 摘要 |
The present invention relates to methods and an apparatus for switching data. According to the invention, storage means providing three or more frame buffers are used for temporarily storing frames of slots received via an input port of said apparatus. Read and write pointers are provided to designate which of said frame buffers that are used to be read/write accessed at each point in time. Control means are provided for controlling the operation of said pointer means, said control means being arranged to position said pointers so that the frame buffer currently designated by said write pointer is not the same as the one currently designated by said read pointer. Configuring means are provided for enabling, for slots that are to be transmitted from said output port and that are not to be time switched by said switch, reading of data for said slot from the frame buffer that is located one frame buffer ahead, in said round-robin fashion, of the frame buffer designated by said read pointer. |
