Implementation of a Management System for a WebBased PBX Server

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Implementation of a Management System for a
Web-Based PBX Server
Student Phuong-Nhung Bui Advisor Dr.-Ing.
Chao-Huang Wei EE Department Southern Taiwan
University
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Contents
Motivation
1
2
Introduction
1
System Configuration
2
Communication Protocol
3
Applications
4
Conclusion and Further Works
5
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Motivation

• Due to
• Rapid growth of global internet connections.
• Trend of the client/server applications.
• Classical PBX need be enhanced to cope with this
  trend.
• This paper proposes a PBX server for remote
  online management.

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Introduction

• PBX (Private Branch Exchange) is a telephone
  exchange device that serves a particular business
  or office, PBXs make connections among the
  internal telephones of a private organization
  usually a business office and also connect them
  to the PSTN (Public Switched Telephone Network)
  via trunk lines.

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Targets of the Server

• Application
• Billing system .
• Callers personal data .
• Will be used in hotels, office or
  dormitories .

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PBX Server Functions

• PBX server
• Collects some information from the incoming and
  outgoing telephone calls.
• Records data to a MySQL database.
• Provides web pages written in PHP and HTML.
• Allows authorized user to access these data
  through internet using simple web browser .

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System Configuration
PBX Server
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System Configuration

• The PBX server requires a web server installed
  together with a server-side, and a database.
• Using open source software for application
  development makes it cost effective and flexible.

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Database

• MySQL
• Program providing multi-user, multi-threaded and
  robust SQL (Structured Query Language) database
  server .
• Main features speed, robustness, and flexibility
  to store large data .
• Freeware
• The database server of choice .

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Web Server

• Apache web server
• Responsible for accepting HTTP requests from the
  users browser .
• Fast, stable and feature-full open source web
  server..
• Runs under multitasking operating systems .
• Capable of handling simultaneous requests .

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PHP scripting language

• PHP scripting language
• Usually used for web development and can be
  embedded into HTML.
• Generally runs on a web server, taking PHP code
  as its input and creating web pages as output.
• Suited for web database applications
• Supports wide range of databases .
• Tools that integrate the web and database
  environments .

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Server Actions
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Data Recording
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Server Program
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Message Format
Format of incoming and outgoing message
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Control commands

• Two important control command to the PBX
• "check in" function
• From server-side to PBX "CI 20", 0Dh, 0Ah
• From PBX to server-side "OK CI 20", 0Dh, 0Ah or
• Cant find out physical number! " 07h, 07h, 0Dh,
  0Ah
• check out function
• From server-side to PBX "CO 20" 0Dh, 0Dh
• From PBX to server-side "OK CI 20", 0Dh, 0Ah or
• Cant find out physical number! " 07h, 07h, 0Dh,
  0Ah

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Applications

• Based on the proposed server, a billing system
  and a personal information management are
  developed for the PBX.
• Application is implemented on a PC with Fedora
  Core installed .
• This application is constructed with the
  information pre-recorded in a database which is
  obtained by the server-side .

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MySQL database

• MySQL database includes many telephone charge
  tables
• Local telephone calls .
• Long distance calls .
• Cell-phone calls .
• International calls and its international dial
  code .
• PBX server calculates the charge of outgoing
  calls.

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System Login
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Telephone Management
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Telephone Billing
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Personal information
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Conclusion Further Works

• The proposed PBX server has been successfully
  deployed .
• Authorized manager can access the server to check
  all outgoing telephone calls and the charge of
  each call or total expense of one telephone set.
• Telephone owner can check his (her) spend and
  view historical record of telephone calls, and
  the callers personal data .

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Conclusion Further Works

• Convenient users interface via internet web
  browser to access the PBX server. Data security
  also provided to protect the system from
  unauthorized access .
• Further extension for some additional functions,
  such as phone line wired home security and remote
  control.

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Thanks for Your Attention !