Method of multiplex multispeed digital exchange and its equipment

A digital switching and multi-rate technology, which is applied in the field of program-controlled digital switching, can solve the problems of simultaneous completion, inability to multi-channel multi-rate input data cross-connection and multiplexing, etc., to reduce equipment cost, increase flexibility, and improve reliability Effect

Inactive Publication Date: 2003-07-09
ZTE CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for realizing multi-channel multi-rate digital switching and a digital switching device using this

Method used

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  • Method of multiplex multispeed digital exchange and its equipment
  • Method of multiplex multispeed digital exchange and its equipment
  • Method of multiplex multispeed digital exchange and its equipment

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Embodiment Construction

[0032] The specific implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] figure 1 The digital exchange unit shown uses the method of sequential writing and controlled reading to perform digital exchange, which is only applicable to the case of single-rate data, and the specific situation has been described in the background technology section above.

[0034] The core of the method of the present invention is to use "controlled writing" for input data and "controlled reading" for output data to complete digital exchange, that is, "controlled writing and controlled reading". Different from the original "sequential write control read" method, the write address of the input data of "control write" is no longer a simple increasing order, but is determined by the working mode of the digital exchange, that is, according to the location of the current input data The channel number and channel number ...

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Abstract

The present invention relates to a multichannel multirate digital switching method, it includes the following steps: according to the working mode of digital switching finding correspondent number of input and output channels and number of signal channels of every channel every frame, logically blocking multipage data memory and connected storage, according to data switching direction defining the content of every storage unit of the connected storage; after having been deserialized, writing the inputted data into correspondent unit in correspondent logic block in multipage data memory according to the its channel and signal channel. When it is necessary for switching, firstly, obtaining the address of connected storage unit correspondent to current output signal channel, defining the data in connected storage unit as reading address.

Description

technical field [0001] The present invention relates to the program-controlled digital exchange technology, in particular, to the digital exchange method and its device. Background technique [0002] Digital exchange refers to the exchange of digital information in each time slot (channel) of each pulse code modulation PCM (Pulse Code Modulation) link, in which time division exchange is the key to digital exchange technology. In time-division switching, the principle of "sequential write and control read" is usually adopted. The so-called "sequential write" means that the input data on the time-division multiplexing line is serially converted and stored in the data memory sequentially; the so-called "control read", It means that the output data can be output in any order required, that is, control readout, so as to realize time slot exchange, and it can realize various business functions such as voice, video and text, and data transmission. [0003] The Chinese patent "mult...

Claims

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Application Information

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IPC IPC(8): H04L5/22
Inventor 程农朱励行张青松丁旭
Owner ZTE CORP
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