System and method of realizing main/standby switching backboard clock

A master-standby switchover and backplane technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as clock gaps, interruptions, and bit errors, and achieve the effect of eliminating clock gaps and realizing seamless connection

Active Publication Date: 2016-03-16
湖州帷幄知识产权运营有限公司
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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems existing in the prior art, a system narrowband access central office equipment and method for realizing active / standby switching backplane clock is provided, so as to solve the problems of existing clock gaps during the active / standby switchover, resulting in bit errors or even interruptions. question

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  • System and method of realizing main/standby switching backboard clock
  • System and method of realizing main/standby switching backboard clock
  • System and method of realizing main/standby switching backboard clock

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Embodiment Construction

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0047] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0048] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0049] figure 1 In the narrowband access central office equipment shown, main control card A and main control c...

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Abstract

The invention relates to the electronic communication technology field and especially relates to a system of realizing a main / standby switching backboard clock. The system is used for narrowband access local end equipment. The system comprises a first master control card and a second master control card which are arranged on a backboard. One of the first master control card and the second master control card can be switched and selected to output a clock signal to the backboard. The master control card which currently outputs the clock signal to the backboard is taken as a main-use master control card and another master control card is taken as a standby master control card. The main-use master control card generates a first control signal at first setting time before generating an enable control signal so as to close clock signal outputting to the backboard. The first control signal gets to another master control card after transmission time delay. The another master control card generates another enable control signal after a processing process of second processing time so as to make the master control card output the clock signal to the backboard. In the above technical scheme, through using a mode of main / standby switching advance notification, seamless connection of the backboard clock during main / standby switching can be realized.

Description

technical field [0001] The invention relates to the technical field of electronic communication, in particular to a system and a method for realizing active / standby switchover of backplane clocks. Background technique [0002] In the narrowband access central office equipment, such as figure 1 As shown, two main control cards are usually set up, namely main control card A and main control card B, and multiple line cards 2. The two main control cards realize redundant backup, and the multiple line cards realize service transmission. The main control card A or main control card B sends the clock to the line card 2 through the backplane 1. When the clock signal is output by the master main control card, the slave main control card does not output the clock signal. When the master-slave relationship between master control card A and master card B is switched, the original master master card becomes the slave master card, and the clock output to the backplane is turned off, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24
CPCH04L41/0668H04L41/0823
Inventor 王亦鸾
Owner 湖州帷幄知识产权运营有限公司
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