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Hubei Zhongyou Technology Industry & Commerce Co., Ltd

No. 3, Zhongyou Technology Industrial Park,,Wuhan,Hubei,China

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Digital Program Control Exchange Principle Experiment Kit



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35 working days

1000 Set per Year

Other, L/C, T/T


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Product Specification

vocational &technical training equipment : advanced communication trainer

Product Description

(1) Realize digital time division exchange and enable speech signal and signaling signal to realize full digitalization in the whole exchange process with high talking quality and stable system operation. It is more close to modern program control exchange principle. 

(2) Connect experiment apparatus and PC through standard serial port; achieve the purpose of managing users through PC software to program control exchange systems setting. PC software interface is humanization with rich function and stable operation, so that the experiment apparatus is mire close to a small scale program control exchange machine. 

(3) Adopt speech record play chip of high quality. When exterior line call in the experiment apparatus, the recorded voice will prompt all users numbers in the experiment apparatus, which makes the function of exterior line more humanization

(4) Four users in the experiment apparatus can communicate with the telecommunication network, either call in or call out. Analog communication could be processed between two experiments through trunk wire. 

(5) Adopt plexiglass baffle for protection 


II. Performance Parameters 

(1) AC, DC Power Supply 

Input: AC 220V±10%

Output: DC ±12V±5%, ±5V±5%, -4810%

(2) Signal Tone 

Dial tone: 450Hz continuous sine wave 

Busy tone: 0.7 second intermittent signal (0.35 second with signal, 0.35 second without signal) 

Ring back tone: 5 seconds intermittent signal (1 second with signal, 4 seconds without signal) 

Ringing tone: 25Hz continuous sine wave signal 

(3) Experiment Apparatus Host Specification: 34cm×26cm×9cm


III. Experiment Contents 

Program Control Exchange Principle Experiment System and Control Unit Experiment 

(1) User interface circuit introduction

(2) Automatic exchange function experiment 

(3) Signal tone circuit experiment 

(4) CPU central centralized control processor experiment 

User Interface Circuit and 2/4 Wire Converter Experiment 

(5) Seven functional experiments of user interface circuit 

(6) 2/4 wire conversion experiment 

Program Control Exchange PCM Coding and Decoding Experiment 

(7) User interface circuit coding and decoding functional experiment 

Multi-type Signal Tone and Ring Current Signal Generator Experiment 

(8) Dial tone experiment 

(9) Busy tone experiment 

(10) Ring back tone experiment 

(11) Ringing signal (ring current) experiment 

Dual Tone Multi-frequency DTMF Reception Experiment 

(12) Dual tone multi-frequency signal generation experiment 

(13) Dual tone multi-frequency signal reception experiment 

Trunk Interface Communication Experiment  

(14) Trunk signal

Contact Us

Contact Person : sandy

Company:Hubei Zhongyou Technology Industry & Commerce Co., Ltd

Address:No. 3, Zhongyou Technology Industrial Park,, Wuhan, Hubei, China,


sandy < Hubei Zhongyou Technology Industry & Commerce Co., Ltd >
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