1 INTRODUCTIONThe NBX Administrator’s Guide explains how to configure your NBX®system. This chapter covers these topics:■ Network-based Telephony■ Overview of the System Software■ NBX NetSet Administration Utility■ NBX NetSet FeaturesFor information about installing hardware components, see theNBX Installation Guide.Network-basedTelephony3Com Networked Telephony Solutions merge telephony with networkingby delivering business telephone service over a data network.To a telephone user, an NBX Telephone is an office telephone. You canuse it to make and receive calls, transfer calls, park calls, use voice mail,and so on. Inside, the NBX Telephone is a network device that cancommunicate over the LAN using Ethernet frames or IP packets. Thetelephone also includes a LAN port. You can connect your computer toyour network through the telephone and avoid the need for a secondLAN connection at the desktop.The core of 3Com Networked Telephony Solutions is the Network CallProcessor (NCP). The NCP manages the processes of making andreceiving calls, providing voice mail and auto attendant services, andresponding to requests for special services, such as access to theNBX NetSet administration utility, Computer Telephony Integration (CTI)services, or the system’s IMAP (Internet Message Access Protocol) server.The NBX system provides the reliability required in a business environmentbecause NBX system voice traffic is independent of computer traffic onthe same network. In fact, after the NCP completes the processing