Vigor IPPBX 3510 IP-PBX The Vigor IPPBX 3510 is a combined IP-PBX (i PBX) & router/firewall. As an IP PBX It offers a complete replacement to the traditional office phone system & analogue or ISDN lines. It also provides integration with legacy systems & lines with optional analogue/ISDN modules, creating a true hybrid system. An IP-PBX uses your existing network (LAN) & the Internet to provide company-wide telephony, using Vo IP technology instead of regular phone lines or a traditional PBX. This can save hugely on line rental, provides vast flexibility, reduces call costs, maintenance & increases efficiency. Phones can be placed anywhere in your office, or around the world to provide one seamless phone network for your business. As a Firewall/ Router, the Vigor IPPBX 3510 provides Dray Teks renowned security & flexibility for your networks Internet connectivity, together with dual-WAN ports for load-balancing or Internet failover. You can connect to any Ethernet-based Internet feed. For ADSL connectivity, just add Dray Teks Vigor 120 ADSL Modem. If you are adding the Vigor IPPBX 3510 onto existing infrastructure, you can just use the PBX facilities without the router/firewall functionality.