Patent ID: 6577623
Filing Date: 2003-06-10
Classification: H04L,H04Q

Abstract:
A fixed-length cell data and time-division data hybrid multiplexing apparatus capable of processing fixed-length cell data and time-division data in a mixed manner, comprising:an asynchronous transfer mode bus for transferring the fixed-length cell data in an asynchronous mode; a time-division multiplexing bus for transferring multiplexed time-division data, a time-division multiplexing switch, connected to said time-division multiplexing bus, for switching time-division data multiplexed in said time-division multiplexing bus; one or more time-division multiplexing bus slots, connected to said tie-division multiplexing bus, capable of implementing one of various process package devices for processing the time-division data or the fixed-length cell data; and one or more asynchronous transfer mode bus slots, connected to said asynchronous transfer mode bus, capable of implementing one of said various process package devices; wherein said time-division multiplexing bus slot can be provided with any of a hybrid line port package device including functions of terminating a time-division multiplexing line for transmitting a multiplexed time slot, and mapping fixed-length cell data to said time slot; a hybrid process package device, simultaneously connected to said asynchronous transfer mode bus slot, for mapping a time slot in said time-division multiplexing bus to fixed-length cell data in said asynchronous transfer mode bus; a first terminal port package device for accommodating various terminals; a time-division multiplexing line port package device for terminating a tune-division multiplexing line for transmitting the multiplexed time-division data; and a time-division data process package device for processing time-division data input from the time-division multiplexing bus and outputting the processed data to the time-division multiplexing bus; and said asynchronous transfer mode bus slot can be provided with any of said hybrid line port package device; said hybrid process package device, simultaneously connected to said time-division multiplexing bus slot; a second terminal port package device accommodating various terminals; an asynchronous transfer mode line port package device for terminating an asynchronous transfer mode line for transmitting said fixed-length cell data; and a fixed-length cell process package device for processing fixed-length cell data input from said asynchronous transfer mode bus and outputting the processed data to said asynchronous transfer mode bus; wherein said hybrid process package device, comprises: a multiplexing/demultiplexing circuit, connected to said time-division multiplexing bus slot, for multiplexing and outputting, as one or more time-division data plural pieces of low-rate media data input from said time-division multiplexing bus, and conversely demultiplexing the plural pieces of low rate media data from one or more input time-division data and outputting the demultiplexed data to said time-division multiplexing bus; and a cell assembly/disassembly layer terminating circuit, connected to said asynchronous transfer mode bus slot, for sequentially converting one or more pieces of time-division data input from said multiplexing/demultiplexing circuit into a fixed-length call, outputting the cell to said asynchronous transfer mode bus, and conversely converting the fixed-length cell input from said asynchronous transfer mode bus into the one or more pieces of time-division data and outputting the data to said multiplexing/demultiplexing circuit, wherein in the time-division multiplexing line, a time slot for transmitting a fixed-length cell and a time slot for transmitting time-division data is kept in a mixed manner.