PBX Phone System: What Is It and How Does It Work?

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PBX phone system is a business telephone system. It is extensively used in enterprises to establish a telephone network. Enterprises use PBX phone systems as their private telephone network for inter-office and external global communication networks. Unlike the plain old telephone system i.e. POTS phone system, PBX has evolved in several ways. From copper cable transmission to internet protocol (IP) audio signal transmission, the PBX phone system has evolved with time and technology. If you are intended to implement the PBX phone system for your office communication system, you must know what it exactly is and how it works. If you don’t know, this post sheds light on PBX phone system technology and also discusses its functioning protocol.

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Introduction to PBX Phone System

PBX stands for Public Branch Exchange. It is a private business telephone system adopted by the organizations to establish a secure communication channel. It can be used over copper cable connectivity and with the IP transmission media as well. PBX phone systems can be used with copper cable connection, analog, and digital combination transmission-lines, and voice over IP (VoIP). Unlike the public switched telephone network that is the POTS phone system, the PBX phone system allows multiple connections via a single telephone line. It saves the cost of acquiring an individual line for each communication device. Initially, the PBX phone system was developed to offer a private network for analog signal transmission for the office spaces. Further, it evolved into an external connectable network using the POTS phone system. For the external user connection, PBX converts analog data to digital data or vice versa. Currently, Voice over IP (VoIP) technology is implemented to the PBX phone system for fast yet secured enterprise-centric communication.

In the business-centric environment, PBX phone systems are chosen over POTS phone systems due to their exceptional features. The following features are offered by a PBX phone system.

  • Extension dialing
  • The business communication hour setting
  • Caller que and waiting line
  • Conference calling
  • Voicemail
  • Call recording
  • Phone record audit

Working Principle of PBX Phone System

PThe traditional PBX phone system used copper-based telephone lines that relied on complicated analog switches and connectors. It was primarily operated by telephone operators. This analog copper-based telephone network is ultimately connected with a PBX box, which enables analog voice data transmission over multiple telephone lines. The signal distribution over several lines is performed by telephony switches. The telephony switches enable and direct the audio signal to a specific telephone within the network. Currently, PBX phone systems are IP based. Due to the benefits offered by internet protocol (IP), the analog to the digital transmission of an audio signal is performed by the PBX technology. In this VoIP PBX, a virtual PBX network is utilized which can be operated from remote locations over internet-based systems. In this network, Ethernet cables are used, therefore digital signals can be easily transmitted. In VoIP PBX, the virtual PBX system is used for analog to digital signal conversion. Further, the network features fiber optic telephony switches that direct the signal to different trunk lines.

As of now, the PBX phone system is introduced and working is explained, it is important to ensure the quality of Ethernet cables and Ethernet switches in order to achieve optimum benefits of PBX phone system. Therefore, it is essential to source these products from a trusted manufacturer or supplier like VERSITRON. The company has been supplying premium quality fiber optic and data communication products for several years to several industries. The quality of their products definitely ensures better performance in your data communication network.

Rich Tull

Rich Tull
R.W. Tull is the President of Versitron, a leading technology company specializing in data communication and networking solutions. With expertise in Guiding network switches and media converters, R.W. Tull has played a pivotal role in driving Versitron's success. His deep understanding of these technologies has enabled the company to provide innovative and reliable solutions to clients. As a visionary leader, He ensures that Versitron remains at the forefront of the industry, delivering cutting-edge networking solutions that enhance data communication efficiency.
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