CODITEL Telephony Systems Unit

3.3.- 응용 커뮤니케이션
TELEPHONY SYSTEMS UNIT - CODITEL

혁신적인 시스템

The Telephony Systems Unit, "CODITEL", has been designed by EDIBON to study the principles of digital switching, allowing the analysis of the operation of a time switch and signal management in telephony systems, as well as the interaction between the different elements involved in the process.

일반적인 설명보기

확장

ICAI

상호작용형 컴퓨터 지원 교육 소프트웨어
ESN

EDIBON SCADA-Net

실험실

3TV
 기술 및 직업 교육을위한 통신 연구실
3HE
 고등 교육을위한 통신 연구실

관련 뉴스

EDIBON and its commitment to European Skills
EDIBON and its commitment to European Skills
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Communication aspects of Unmanned Aircraft System (UAS)
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일반적인 설명

The Telephony Systems Unit, "CODITEL", has been designed by EDIBON for the study of the operation of digital switching systems in telephony networks and the understanding of signal transmission and management principles. It allows the practical analysis of a digital switch based on time switching, where signal samples from an input multiplex are reorganized and transmitted in any order through an output multiplex, facilitating the study of connection establishment, channel assignment, and traffic management in digital telephony systems.

The unit is structured similarly to a time switch with two PCM paths, one for input and one for output, following international telephony system recommendations. Its design allows the study of digital circuit switching operation and the control of connections between different users.

The unit is composed of the following main elements:

  • Four user line circuits: two intended for tone (multifrequency) terminals and two for pulse (decadic) terminals. The multifrequency circuits are implemented using hybrid integrated circuits that perform the basic functions of a line circuit, while the decadic circuits are built with discrete components. All circuits are compatible with commercial telephone equipment.
  • Four numeric receivers: two for pulse (decadic) signals and two for tone (DTMF) signals, assigned to specific lines. It includes a time base that provides system synchronization and a digital tone generator that enables the simulation of telephony signals.
  • Digital switching network: It consists of a time-switching matrix implemented using memory elements. Its architecture corresponds to a sequential write and asynchronous read system, allowing the reorganization of signal samples and the establishment of connections between input and output channels.

This Computer Controlled Unit is supplied with the EDIBON Computer Control System (SCADA), and includes: The unit itself + a Control Interface Box + a Data Acquisition Board + Computer Control, Data Acquisition and Data Management Software Packages, for controlling the process and all parameters involved in the process.

연습 및 가이드

매뉴얼에 포함 된 가이드 실기 연습

  1. To study the main actions and signals involved in a digital commutation.
  2. To study the dynamic channel assignment and temporal switching.
  3. To study the standards for audio conversion.
  4. To establish of a communication between some channels step by step.
  5. Visual monitoring of the main states that a line goes through during a call.
  6. To configure lines as only receiver, transmitter, receiver/transmitter.
  7. To test of the conversion from 2 to 4 wires.
  8. To study the electric stages when the user makes actions over the telephone.
  9. To study the signal involved when dialing by pulses.
  10. To study the signals involved when dialing by tones.
  11. To study the tone signal.

장비로 수행 할 수있는 더 많은 실용적 연습

  1. Many students view results simultaneously. To view all results in real time in the classroom by means of aprojector or an electronic whiteboard.
  2. The Computer Control System with SCADA allows a realindustrial simulation.
  3. This unit is totally safe as uses mechanical, electrical/electronic,and software safety devices.
  4. This unit can be used for doing applied research.
  5. This unit can be used for giving training courses to Industrieseven to other Technical Education Institutions.
  6. Several other exercises can be done and designed by the user.

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