All you need for a VoIP service is an Internet connection. This lets you have a reliable phone system without going through the phone company. But not all VoIP services are made equal. Businesses need to have access to multiple lines and additional features that customers, clients and other callers will be expecting.
Look to make the most of not having a landline-based phone system, including call forwarding and call answering rules. Get inexpensive 800 numbers for quick customer service. All this can be done with a VoIP service created for businesses. RingCentral has just such a service and can save you money without sacrificing functionality.