The Adtran NetVanta 3148 Fixed-Port Ethernet Router has an 8-port PoE ethernet switch and four routed, auto detecting Gigabit interfaces, two of which can be fiber fed. With four Gigabit ports that may be used for LAN or WAN, the Adtran NetVanta 3148 is excellent for a variety of applications that require ethernet redundancy. The Adtran NetVanta 3148 ADTRAN Operating System (AOS) is a flexible hardware platform that supports static and default routes, demand and policy-based routing, and routing protocols for quick, accurate network convergence.