Method for smoothly upgrading phototiming digital transmission system equipment

A technology for optical synchronous digital and transmission systems, applied in transmission systems, time-division multiplexing systems, electrical components, etc., can solve problems such as inconvenient upgrade operation and service interruption, and achieve simplified upgrade process, improved stability and upgrade efficiency Effect

Active Publication Date: 2008-06-11
ZTE CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for smooth upgrading of optical synchronous digital transmission system equipment, and solve the problems that the existing upgrading technology will cause business interruption and the upgrading operation is not convenient for engineering application

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  • Method for smoothly upgrading phototiming digital transmission system equipment
  • Method for smoothly upgrading phototiming digital transmission system equipment
  • Method for smoothly upgrading phototiming digital transmission system equipment

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Embodiment Construction

[0019] The core idea of ​​the present invention is: in the SDH network upgrading scheme, two main and standby cross-connect units (main cross-connect unit and standby cross-connect unit) are required to protect each other. Since the backplane bus rate of the cross-connect unit is different, the optical interface units with different backplane rates must work on the same cross-connect unit at the same time. G.841 is applicable to SDH system and describes the classification and characteristics of SDH network protection structure). In the multiplex section protection ring, the priority of manual switching is lower than the priority of signal failure, so as to realize the switching unit and optical interface unit from Smooth upgrade from low-speed backplane bus to high-speed backplane bus.

[0020] In the implementation process, because cross-connect units and optical interface units of different backplane rates cannot be mixed (otherwise service interruption will be caused), it i...

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Abstract

The invention discloses a method for smooth upgrade of an optical synchronous digital transmission system device, comprising the following steps: firstly, optical interface units and cross units in sites needed for upgrade in a network are bond; secondly, a site needed for upgrade in the network is upgraded, and including the following steps: a manual switching command is transmitted in a certain optical direction of the site; services in the optical direction are switched to a protective direction; cross units and corresponding optical interface units in the optical direction are switched to high speed cross units and high speed optical interface units, and then cross units and corresponding optical interface units in the other optical direction are switched to high speed cross units and high speed optical interface units; the manual switching command is cancelled; thirdly, all sites needed for upgrade are upgraded by adoption of the means of the second step. By adoption of the method of the invention, upgrade of SDH devices is guaranteed to have no affection on services, and upgrade process is simplified, and stability and upgrade efficiency of network upgrade are improved.

Description

technical field [0001] The invention relates to the field of optical synchronous digital transmission system (Synchronous Digital Hierarchy, SDH), in particular to a method for smooth upgrading of optical synchronous digital transmission system equipment. Background technique [0002] Existing optical transmission equipment has an increasing demand for large capacity, and the speed of the backplane bus is also constantly increasing. Single boards and related software are required to upgrade the original low-speed backplane bus to a high-speed backplane bus. Since this upgrade process involves board replacement and software update, and the coexistence of boards with different backplane bus speeds is involved in the update process, the network protection function of the original system will also be invalidated, which will cause the original normal operation to be interrupted , ranging from a few hours to a few days, resulting in a high cost of network upgrades. [0003] Accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/08H04B1/74
Inventor 吕军
Owner ZTE CORP
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