In spite of the fame of email and chat apps for customer service, many customers still prefer talking on the phone with a real representative. Moreover, there are various businesses and sales people who use telephone marketing to acquire new clients or keep in touch with existing ones. Even though more people use other ways to communicate than before, it's still vitally important for companies and customers to be able to communicate in real time. In this piece, we'll talk about different kinds of business phone systems, as well as what features they offer.