A phone system is a computer-based system that provides telephone services to a company. It is an important part of the business infrastructure. There are different types of phone systems that are available in the market, and they differ in terms of features, price, and scalability.

The first type of phone system is the analog phone system. This type of phone system has been around for decades and has been extensively used by businesses for voice communication. It is cheaper than other types of phone systems, but it does not provide any additional features such as voicemail or call waiting. The second type is digital PBX (private branch exchange) systems; these are more expensive than analog systems but offer additional features such as voicemail, call waiting and three-way calling. The third type is VoIP (Voice over Internet Protocol) which offers many benefits such as being cheaper than other types of phone systems, easy to install and scalable – it can be configured to meet changing needs as your business