A detection method for optical fiber longitudinal protection channel
A technology of longitudinal protection and detection method, which is applied in the direction of digital transmission system, forward error control, error prevention, etc. It can solve the problems of unable to detect the intersection of master and slave channels, and achieve good detection completeness, good compatibility, and ensure consistent effect
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[0027] Such as Figure 4 As shown, a detection method for an optical fiber longitudinal protection channel includes the following steps:
[0028] (1) The sender and the receiver correspond to the protection devices on both sides respectively, and the protection device on this side uses the CRC-16 algorithm to perform summation verification on the device application program to generate 16-bit program verification information;
[0029] (2) Generate a 16-bit identification code representing the local channel according to the fixed value of the local channel identification code in the protection device;
[0030] (3) According to the channel type, combined with the program verification information and the local channel identification code, a unique 32-bit channel information word is generated;
[0031] (4) Send the information word and detect the light emitting power, and the light emitting power is displayed under the device monitoring menu in real time;
[0032] (5) The protect...
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