Access system and method for PDH branch service

A quasi-synchronous digital and quasi-synchronous technology, applied in the field of communications, to reduce workload, reduce inventory risk, and facilitate smooth upgrades

Active Publication Date: 2011-05-11
WUHAN ZHONGXING SOFTWARE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a system and method for accessing quasi-synchronous digital series tributary services, which are used to solve the problem in the prior art that when the type of PDH tributary interface changes, the entire board must be replaced together

Method used

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  • Access system and method for PDH branch service
  • Access system and method for PDH branch service
  • Access system and method for PDH branch service

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Embodiment Construction

[0039] The system and method described in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0040] The core idea of ​​the system and method described in the embodiment of the present invention mainly includes: separating the PDH tributary interface and tributary service processing into a tributary interface board and a tributary service adapter board in SDH / SONET transmission equipment; The adapter board can be compatible with different types of tributary interface boards. SDH belongs to the ITU-T (International Telecommunications Union) series of standards, while SONET belongs to the North American series of standards. The essential content and main specifications of the two are similar, and they can also be used in common in terms of backplane bus design technology. The present invention relates to the category of optical transmission communication equipment of SDH and SONET standards. In the subsequen...

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Abstract

The invention discloses an access system of plesiochronous digital hierarchy tributary service, comprising: tributary service adapter plates, many types of tributary interface boards which are connected by a same bus and the tributary service adapter plate, wherein, the tributary interface board comprises: an analog interface circuit unit, an interface processing unit and a mapping unit. Through separating the interface processing and the service adaptation, different tributary interface boards can use same tributary service adapter plates, the invention reduces workload of product design, shortens product development cycle; and when the system back board needs to update, the tributary interface can be loaded with only changing the service adapter plate; the tributary interface boards can be applied to different series product, investment of traders can be protected in maximum.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to SDH (Synchronous Digital Hierarchy, Synchronous Digital System) and SONET (Synchronous Optical Network, Synchronous Optical Network) optical transmission communication equipment, the access technology of PDH (Pseudo-Synchronous Digital Series) branch services field. Background technique [0002] In current SDH and SONET optical transmission equipment, the backplane service bus mainly used is in the form of STM-N (Synchronous Transport Module, N=1, 4, 16, 64, etc.). When using this method to perform access processing of PDH (Pseudo-Synchronous Digital Series) branch services, it not only includes branch service interfaces and service processing, but also performs SDH STM-N framing processing on services, and then transmits them to Other functional units of the device are sent to the circuit board of the device for transmission according to the configuration of the n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04J3/16
Inventor 刘毅包松清
Owner WUHAN ZHONGXING SOFTWARE CO LTD
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