Which voice and data delivery networks would I recommend for the company? Explain.

Scenario, CIO calls you to his office wanting another paper from me. Paper should cover the following subjects. Questions to be answered Which voice and data delivery networks would I recommend for the company? Explain. What types of telecommunication systems would I propose?Should the company go with VOIP & explain the difference in how they work? What companies should the company consider? What should the company use when it comes to error control?How should the company handle network congestion?