What is the challenge with converged network security? Finding the right partners to deliver a secure, reliable, converged voice and data network infrastructure — without limiting your flexibility to grow your business and extend the reach of your network — is the key. Converged network security isn’t something to be added after the fact — the need to protect your mission-critical communications systems and business applications should be considered from the very start of your converged network planning. At the same time, it’s not enough to simply protect your network from external threats. With more and more employees using laptops.