8kbps sub-time slot interchange method and device thereof

A technology of switching equipment and time slot switching, applied in data switching networks, digital transmission systems, electrical components, etc., can solve the problems of occupying switching bandwidth, low switching bandwidth utilization, and huge switching centers, achieving cost savings and utilization. Improve, exchange flexible effects
CN101764702AActive Publication Date: 2010-06-30HARBIN HYTERA TECH CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HARBIN HYTERA TECH CORP
Publication Date
2010-06-30

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Abstract

The invention provides a 8kbps sub-time slot interchange method and a device thereof, which is flexible to interchange, changes the minimum exchange rate of a chip through parameter configuration, and has more advantage compared with the traditional switch chip. The device comprises a programmable logic device unit, a microprocessor unit, an E1 interface unit and a power supply unit, wherein the programmable logic device unit is respectively connected with the microprocessor unit and the E1 interface unit. The 8kbps sub-time slot interchange method adopts a mode that the alphabetic writing controls reading to realize n*8kbps variable rate time slot interchange, and utilizes the microprocessor to perform IP group packet to data so as to realize packet interchange of data. The invention changes the minimum exchange rate of the chip through parameter configuration, has more advantage compared with the traditional switch chip, can realize the IP group processing function of the interchange of voice and data between systems, gives full play to the advantage of time slot interchange and IP group interchange in the interchange of voice and data, and saves the cost.
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Description

(1) Technical field

[0001] The invention relates to digital communication technology, in particular to an 8kbps sub-time slot exchange method and equipment. (2) Background technology

[0002] Speech coding technology is usually divided into three categories: waveform coding, parametric coding and hybrid coding. Waveform coding directly samples and quantizes the analog voice, and expresses it by code. Its typical representative is PCM coding. The main process of PCM encoding is to sample the analog signal at regular intervals to discretize it, and at the same time round the sampled value according to the stratified unit, and at the same time use a set of binary codes to represent the amplitude of the sampled pulse , To realize voice digitization. The sampling frequency of voice PCM is 8kHz, and each quantized sample value corresponds to an 8-bit binary code, so the rate of voice digital coding signal is 8bit×8kHz=64kb / s.

[0003] Parametric coding is also called sound source codi...

Claims

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