The workstations themselves don’t take a lot of adjustment. Whatever that entails is quickly accomplished. The important elements you are missing are talent, technology and a customer.
With VOIP, you can find a cost-effective technology solution. There are asterisk-based solutions specifically for the emerging Contact Center.
Before investing the money in technology, hiring and training agents, acquiring management and technical talent, you MUST get the client. There are many small struggling Contact Centers out there to compete with. If you want to rent out your space to an existing Contact Center, that is probably the better business model as you receive income for underutilized resources and the existing Contact Center has a lower Cost Structure.
Good luck! I am willing to discuss further via email if you desire.