Communication is one of the biggest elements of small business success. From internet connectivity to telephone service, if you can't communicate both internally and with your customers, it stifles your business growth and efficiency. One of the biggest choices you'll make is whether or not to invest in a business phone system. Here's a look at several reasons why you should invest in one today. Adaptability When you opt for a standard phone installation instead of a business phone system, you need to have a separate line run in your building for every phone line, and they're not integrated.