Method and apparatus for shortening SDH multi-plexing segment protective rearranging time
A multiplex section protection and switching time technology, which is applied in multiplexing communication, time division multiplexing system, electrical components, etc., can solve the problems of long K1 and K2 byte change time and long protection switching time, etc. Achieve the effect of shortening the protection switching time and increasing the protection switching time
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[0040] The implementation of the technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings:
[0041] The implementation principle of the multiplex section protection switching technical solution used in the present invention is shown in Fig. 1 . It consists of the following parts: SDH optical line K1 and K2 byte extraction module, FPGA (programmable logic device) hardware detection of K1 and K2 byte changes, CPU (processor) multiplex section protection switching processing.
[0042] The entire protection switching process is as follows: SDH optical line K1 and K2 byte extraction module extracts K1 and K2 bytes received on the corresponding optical line, and sends them to FPGA, which detects the changes of received K1 and K2 bytes If there is a change, record the contents of the currently received K1 and K2 bytes, and at the same time generate an interrupt signal to notify the CPU to perform multiplex sec...
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