453Networking Configuration GuideChapter 59Data networking overviewThe BCM is a converged voice product, and can be connected to virtually any data network, toprovide Voice over Internet Protocol (VoIP) support in either a Local Area Network (LAN) orWide Area Network (WAN) environment. The BCM is also available with an integratedBroadband Ethernet or ADSL Router, which is intended to provide basic data networking andservices, as well as Virtual Private Network (VPN) connectivity for small sites. Refer to “VPNoverview” on page 525 for more information. With the router, the BCM can handle all datanetworking needs, including both VoIP and basic IP networking. The BCM is also availablewithout a router, to provide VoIP capabilities to networks that already have an existing IP network.What is data networking?On the BCM, data networking refers to both standard IP data networks, as well as VoIP. These twotypes of networks are closely intertwined, and connect a wide range of IP devices - including IPtelephones and computers - with the BCM and with external networks. The BCM with router canalso handle all routing requirements.For more information about setting up networks see “System telephony networking overview” onpage 33.About the BCM VoIP capabilityThe BCM provides VoIP functionality both within a LAN (Local Area Network), and across aWAN. It can contain IP telephones, which act similar to a traditional phone, but send their signalsacross data networks in the form of IP packets. The BCM can also contain IP trunks which connectoffices together across an IP network.For more information about VoIP see “VoIP overview” on page 363.Network routingThe BCM is available with and without an internal router. With the router, it can handle allexternal connections necessary for a data-network, as well as control security on theseconnections. The standalone version of the BCM does not handle routing, but is suitable for IPnetworks where a router is already in place. For information on the BCM router see “Routeroverview” on page 469.Configuring the BCM with data networksTo configure the BCM to work with a data network, complete the following steps:
