Method for acquiring accurate line transmission delay during time synchronization
A transmission delay and time synchronization technology, applied in the field of data communication, can solve the problems of inability to obtain the delay, the accuracy cannot meet the requirements, and the system cannot calculate the one-way or two-way accurate delay, so as to meet the normal operation and ensure the accurate time. Synchronized effect
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0031] Such as figure 2As shown, it is a schematic diagram of a distributed rack-type communication system applied in the embodiment of the present invention, which includes two main control units with large-capacity switching capabilities, and is responsible for communication data plane data exchange; at the same time, the system control plane CPU unit is also The main control unit is responsible for system configuration and calculation of distributed communication protocols. The distributed rack-mounted communication system uses PTP for precise time synchronization, and the backplane performs direct physical interconnection of each unit (ie, line card) through second pulses, and the control plane usually uses Ethernet to communicate information of each subsystem. The distributed rack communication system can be used as a BC (Boundary Clock...
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