The present invention describes a system and method for communicating voice and data over a packet-switched network that is adapted to coexist and communicate with a legacy PSTN. The system includes soft switch sites, gateway sites, a data network, a provisioning component, a network event component and a network management component. The soft switch sites manage the gateway sites to request the set-up and tear-down of calls. The gateway sites originate and terminate calls between calling parties and called parties through the data network. The provisioning and network event component collects call events recorded at the soft switch sites. The network management component includes a network operations center (NOC) for centralized network management.