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Distributed SSM protocol processing system and method based on complex packet switching system

A protocol processing and packet switching technology, applied in the field of distributed SSM protocol processing systems, can solve problems such as clock link instability and clock link oscillation, and achieve the effects of improving corresponding delays, avoiding timing loops, and reducing time

Active Publication Date: 2017-11-07
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

Timing loops occur when the slave clock output is looped back to the input directly or indirectly through the network), resulting in overall clock chain instability and oscillations in the clock chain

Method used

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  • Distributed SSM protocol processing system and method based on complex packet switching system
  • Distributed SSM protocol processing system and method based on complex packet switching system
  • Distributed SSM protocol processing system and method based on complex packet switching system

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0023] see figure 1 As shown, a distributed SSM protocol processing system based on a complex packet switching system includes a main control board, a system switching unit and at least one service board, and the system switching unit is responsible for communication between the main control processing unit and the business processing unit; The main control disk includes a main control processing unit and a main control logic processing unit. The main control logic processing unit is responsible for collecting the SSM input information of each port of each service disk, and encapsulating the output data of the main control processing unit (encapsulating into a system internal communication format) and sent to each business logic processing unit; the main control processing unit is responsible for the processing of the SSM input information; an...

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Abstract

A distributed SSM protocol processing system and method based on a complex packet switching system, relating to the technical field of synchronous transmission systems, the system includes a main control board, a system switching unit and at least one service disk, and the system switching unit is responsible for the main control processing unit and Communication between business processing units; the main control panel includes a main control processing unit and a main control logic processing unit. Encapsulation; the main control processing unit is responsible for the processing of SSM input information; the business disk includes a business processing unit and a business logic processing unit; the business processing unit is responsible for calculating the SSM output information of each port of the business disk and sending it to the business logic processing unit; the business logic processing unit Responsible for reporting the SSM input information of each port of the service disk to the main control logic processing unit, and sending ESMC messages to each port.

Description

technical field [0001] The present invention relates to the technical field of synchronous transmission systems, in particular to a distributed SSM (Synchronous Status Message, Synchronous Status Message) protocol processing system and method based on a complex packet switching system. Background technique [0002] Currently, the SSM protocol is widely used in synchronous digital systems in the transmission field. For a synchronous system, clock synchronization is crucial, and avoiding timing loops in the clock topology design of a synchronous system is the primary consideration of the design. [0003] For how to avoid timing loops, the implementation of the SSM protocol is an important means. The implementation of the SSM protocol not only includes the implementation of SSM rules, but also has strict requirements on the time of SSM information processing. According to the requirements of G.8262 and national standard YD / T1267, the SSM processing delay T under the condition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L1/22
CPCH04J3/0641H04L65/40
Inventor 许文龙
Owner FENGHUO COMM SCI & TECH CO LTD
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