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What is Circuit Switching?

Circuit SwitchingDid you know that circuit switching is the most common form of the system, but it might not be the most efficient?

And, that there’s no way of knowing if someone has called you if you are engaged when someone tries to ring and can’t get through?

This guide will tell you everything you need to know about circuit switching, including what it is and other systems that might be more effective.

What’s in this guide?

What is a Circuit-switched Telephone System?

So, what exactly is a circuit-switched telephone system?

Mostly, you have a single line that allows you to make calls as well as receive them.

You have a connection which is dedicated to and between one endpoint and another in your network.

This is known as a ‘POT’ or Plain Old Telephone System.

When you make a call, you can’t accept another one or be disturbed, making it closed off.

There is also no way of knowing that someone has tried to ring you, which often causes problems when you have missed an urgent call.

It uses copper wires that transfer voice data, which is the most frequently used system that is used in most residences today.

During the time of old-fashioned dial-up connections to the internet, you couldn’t make a call and use the internet at the same time.

As in modern times, you no longer need to use your telephone line as a dedicated internet connection; there are questions as to how relevant circuit switching is.


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Packet-Switched Telephone Systems

A more modern method is packet-switching.

Your call will be cut up into packets of data, which is then transmitted through your network to the person at the end of your line – this is often cheaper, although the quality can sometimes suffer if you don’t have exceptional broadband.

This is especially true if you have multiple callers at once, or on the line.

Advantages and Disadvantages of Circuit Systems


✔ You won’t be interrupted on your call
✔ The line will be clear
✔ The quality of the call should be excellent
✔ Your channel will never become congested


✗ These types of circuit systems are old-fashioned
✗ They are more expensive
✗ Unlike a VoIP system, you won’t be told when you missed a call

What’s the right system for your business?

Working out which system is right for you depends entirely on your circumstances; for instance, you may not see the need for a modern VoIP system. However, many benefits could help you regardless of whether you are a single entrepreneur or a multi-site corporation.

What’s Next?

This guide has explored what circuit-switching systems have to offer by providing a breakdown of the various advantages and disadvantages they provide to ensure that before you buy a circuit system for your business, regardless of the size of your business, you can make a well-informed decision.

You do not need to hassle and spend endless hours scouring the internet for different reviews and costings.

ExpertSure are here to help you get the best quotes from suppliers who are trustworthy and ready to offer genuine solutions for your business.


Filwood Green Business Park
1 Filwood Park Lane

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