Moving to a multipurpose packet-based VPN that transports both voice and data with high quality poses a number of significant management challenges. Managers must determine whether to operate the network using an enterprise-based model, an outsourced or carrier-based model, or a hybrid model. They must settle security issues that involve several layers of the network. And they must ensure that they and their vendors can achieve the required QoS levels across these complex networks. Yet, the advantages of converged, multipurpose VPNs remain a strong attraction. The opportunity to eliminate separate, duplicate networks and costly dedicated facilities, minimize costly public network long distance charges, and reduce administrative overhead provides a powerful incentive. Most important, by helping integrate voice and data communication, multimedia Messaging, supplier and customer relationship management, corporate data stores, and other technologies and resources, converged networks promise to become a key enabler for eBusiness initiatives.