E1/T1 interface for implementing backup through using relay

A relay and pulse relay technology, applied in electrical components, transmission systems, etc., can solve the problems of not supporting E1/T1 interface backup, E1/T1 interface analog part and digital part are not separated, etc., to improve and enhance the anti-lightning performance. Reliability, the effect of improving stability

Inactive Publication Date: 2008-02-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned defects of the prior art, the present invention solves the problem that the analog part and the digital part of the existing E1 / T1 interface are not separated, and the backup of the E1 / T1 interface is not supported

Method used

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  • E1/T1 interface for implementing backup through using relay
  • E1/T1 interface for implementing backup through using relay
  • E1/T1 interface for implementing backup through using relay

Examples

Experimental program
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Embodiment Construction

[0020] For ease of description, the following only uses E1 as an example for illustration, but all solutions are applicable to T1 interfaces.

[0021] According to market feedback information, E1 interface damage is one of the highest percentages of single board failures. Because the E1 interface is damaged, it not only needs to spend a lot of maintenance costs, but may even cause major accidents to the bureau. If a single board is damaged, the general solution is to replace the board, but replacing the board will inevitably affect the bundled E1 cables, which is not advisable from the perspective of engineering and reliability.

[0022] In order to improve its reliability, the E1 interface is designed in the way that the boards are mutually backed up. Once a single E1 interface board is damaged, the system will automatically switch the E1 interface to the standby one under the premise of ensuring that the wiring is not changed. interface single board, thereby enhancing the r...

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PUM

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Abstract

Comparing with prior art, the invention separates analog part of El /Tl interface from its digital part. Thus, digital part and active circuit are integrated on front plug-in board, and analog part and passive circuit are integrated on back plug-in board. Moreover, the invention supports backup for El /Tl interface. Once main front plug-in board of interface is in failure, standby front plug-in board is put into operation automatically so as to enhance reliability of interface and raise stability of system. Usually, back plug-in board is not easy to be damaged so that bound cables will not be influenced. The invention possesses advantages of raised performance for anti lightning strike, preventing event of system down.

Description

technical field [0001] The present invention relates to an E1 / T1 interface (representing an E1 interface or a T1 interface) used in the communication field, and more specifically, relates to an E1 / T1 interface that adopts a relay to realize backup. Background technique [0002] E1 and T1 are the abbreviations of PCM30 and PCM24 respectively, which are the three basic groups in the PCM (Pulse Code Modulation) digital system. Among them, the nominal rate of E1 is 2048kbit / s, and the nominal rate of T1 is 1544kbit / s. For detailed definitions, please refer to the ITU-T G.703 / G.704 standard. [0003] In the traditional design, the frame design suitable for front insertion is adopted, and the digital part and the modulus part of the E1 or T1 interface are all integrated on the single board. There is no interface on the board itself, but the interface is placed on the backplane, and the SMB outgoing line is used. This is an old way of outgoing lines, which is no longer used in ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/74H04L29/10
Inventor 张耀文李振亚项能武谢寿波涂君
Owner HUAWEI TECH CO LTD
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