Zoom 5567-00-00 Clb/dsl Gateway Router with voip Router/Gateway/Firewall/4-port Switch plus VoIP for voice calls over the Internet A router, firewall, four-port 10/100 Ethernet switch, USB port, and VoIP phone port Lets you use your standard single line phone for conventional phone calls or Because the V3 integrates Internet telephony with a full featured gateway, setup is