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EPABX is an abbreviation that stands for Electronic Private Automatic Branch Exchange. It comes under the category of business phone systems which serve a . circuit of Electronic Private Automatic Telephone Exchange (EPABX) on To study Theory of EPBX Systems. 3. To study Block diagram and Working principle. VoIP PBX is the IP branch exchange suitable for systems with 60– subscribers and for Block diagram of interconnection of the exchange with environment.

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Would you like to merge this question into it? Would you like to make it the primary and merge this question into it? Merge this question into. Split and merge into it. Electronic Private Automatic Branch Exchange. Too much for this forum. Look for a night course on telephone technology. They are sysyem crosspoint switches with touch-tone decoders. Block diagram of smartquill? AM transmitter block diagram?

Block diagram of microprocessor?

Pbx Telephone System Diagram – Wiring Diagram Third Level

WikiAnswers does not support graphic images. Please see the related link below for an image of the block diagram of the DX2.

Block diagram of CDMA? Block diagram of optical mouse? Block diagram of a computer with explanation? A computer can process data, pictures, sound and graphics. They can solve highly complicated problems quickly and accurately.

PBX ( Network Diagram)

A computer as shown in Fig. These are 1 it accepts data or instructions by way of input, 2 it stores data, 3 it can process data as required by the user, 4 it gives results in the form of output, and 5 it controls all operations digaram a computer. We discuss below each of these Computer operations 1. This is the process of systfm data and programs in to the computer system. You should know that computer is an electronic machine like any other machine which takes as inputs raw data and performs some processing giving out processed data.

Therefore, the input unit takes data from us to the computer in an organized manner for processing. The process of saving data and instructions permanently is known as storage. Data has to be fed into the system before the actual processing starts. Therefore the data is first stored in the storage unit for faster access and processing.


This storage unit or the primary storage of the computer system is designed to do the above functionality. It provides space for storing data and instructions. The storage unit performs the following major functions: The task of performing operations like arithmetic and logical operations is called processing.

The Central Processing Unit CPU takes data and instructions from the storage unit and makes all sorts of calculations based on the instructions given and the type of data provided. It is then sent back to the storage unit.

This is the process of producing results from the data for getting useful information. Similarly the output produced by the computer after processing must also be kept somewhere inside the computer before being given to you in human readable form.

Again the output is also stored inside the computer for further processing. The manner how instructions are executed and the above operations are performed. Controlling of all operations like input, processing and output are performed dizgram control unit.

It takes care of step by step processing of all operations inside the computer. The computer system is divided into three separate units for its operation.

They are 1 arithmetic logical unit 2 control unit. After you enter data through the input device it is stored in the primary storage unit. The actual processing of the data and instruction are performed by Arithmetic Logical Unit. The major operations performed by the ALU are addition, subtraction, multiplication, division, logic and comparison. Data is transferred to ALU from storage unit when required.

After processing the output is returned back to storage unit for further processing or getting stored. epaxb

Control Unit CU The next component of computer is the Control Unit, which acts like the supervisor seeing that things are done in proper fashion. Control Unit is responsible for co ordinating various operations using time signal. The control unit determines the sequence in which computer programs and instructions are executed. Things like processing of programs stored in the main memory, interpretation of the instructions and issuing of signals for other units of the computer to execute them.


It also acts as a switch board operator when several users access the computer simultaneously. Thereby it coordinates the activities of computer’s peripheral equipment as they perform the input and output. You may call CPU as the brain of any computer system.

It is just like brain that takes all major decisions, makes all sorts of calculations and directs different parts of the computer functions by activating and controlling the operations.

Block diagram of electronic communication? What is the use of epabx?

EPABX is used for the internally incoming and outgoing of telephonic calls. If we have two telephone line it can be divided into eight lines and the incoming and outgoing calls … can be done from these eight no. What is meaning of epabx? But I will try to explain atleast the basic fundamentals. An EPABX has three main components 1 the analog system and analog to digital converter which is basically the various line cards and 2 the cross connection matrix which connects one call to another and 3 the control of the whole EPABX.

The first part 1 deals with the analog system i. It converts the signalling as well the voice into digital and handovers to the matrix. The matrix checks for which port the no. The call is established and held as long as you keep the receiver off hook.

The third part maintains the normal functioning of the EPABX including power supply, configuration, troubleshooting and generation of various reports. Hope you got some idea. A telephone exchange serving a single organization, having a switchboard and associated equipment, usually located on the customer’s premises; provides for switching calls bet … ween any two extensions served by the exchange or between any extension and the national telephone system via a trunk to a central office.

For the source and more detailed information concerning your request, click on the related links section Answers. The general term “Extension” is used to refer to any end point on the branch. External Telephone Connection 4. Choose a video to embed.