The ZIP 4x5 integrates the functions of an IP phone, analog phone, Ethernet switch, and router. It has all the functions of the ZIP 4x4, plus advanced functions like firewall, NAT, VPN, and DHCP which allow it to be connected directly to a broadband Internet connection such as a DSL or cable modem. With the additional convenience such as Bluetooth and voice activated dialling, this device is a perfect fit for connectivity of the home office, remote branch, or executive desk.