First, some things are going to be constants no matter whether you choose a tradition PBX system or a new VoIP system. You need to consider whether your company is in growth mode or if employee size will stay pretty steady.  Some things like hold, transfer and conference call functionality are a given.  Voice mail, auto-attendant and hold are all givens too.  However, when you start to discuss multi language, ring groups, mode scheduling and many others a small business owner may not be able to assess whether it’s needed or not.  Be careful when choosing, many companies will do groupings and up charge you without your knowledge for services you will never use.

Makes sure you clearly understand the phone installation process and the expenses surrounding it, many times this alone can be an unknown and unpleasant experience.  It’s best to make sure your telephone provider clearly states the expected costs.

The main benefit of a VoIP system is that it charges differently for calling out of state and country.  The first thing small business owners see is the significant cost savings because the rates are just so much lower.  In a head to head comparison VoIP will come out ahead every time.   When you look at this it becomes clear quickly that your profits are being eaten up through a PBX system.

VoIP systems tend to have less installation needs, thus a reduction in installation cost and another financial win for you.  Since VoIP services connect through an Ethernet and you already have a connection that installation cost mostly goes away.   There is the possibility that with increased usage from the VoIP system you will have greater bandwidth needs, however that cost will still be less than a PBX phone system.

When considering a phone system look at what you need in the way of extensions and other applications it may be more difficult to get it through a VoIP system.  In this case you may want to consider sticking to a traditional PBX system.

The best thing to do is understand your needs, ask your employees which functionality they really need and learn from a reputable company that can help you weigh the pros and cons for your business.