The finance company's new IP infrastructure, which uses the Univerge SV7000 IP server blade platform, will enable it to seamlessly carry out its planned expansion and relocation, supporting nearly 900 users.
The move towards a converged system will also lead to "enormous cost savings" and enable Norton Finance to operate much more effectively, the company said.
Norton Finance is in the process of consolidating its business premises into two main sites, and having a converged network will help facilitate this move.
Jason Weakley, IT manager at Norton Finance, said, "The creation of a new site prompted us to consider how to make the best use of our investment and more specifically, our communications strategy.
"The new VoIP infrastructure will save us a great deal of money, time and effort. When we move to the new office, users will simply have to plug in their new phones and they will work. VoIP offers enormous potential and flexibility."