1. What is small business phone system? It is a multiple line phone structure usually applied in the business setups to aid in communication at different levels. 2. What is a toll free number for a small business phone system? It’s one that can be dialed from all over the country with no charges for long distance. It enables businesses to advertise one unique number countywide. 3. Do I need to have a new separate number to setup a Toll free number? NO. You don’t have to setup a new or separate phone line. Your small business phone system will dial to any desired number.