The Nortel Ethernet Routing Switch (ERS) portfolio includes a broad collection of Ethernet switching products designed to securely deliver Layer 2 and 3 connectivity for converged networking.Nortel's VoIP and WLAN portfolio are enabled over modular and stackable Power over Ethernet (IEEE 802.3af) switches in a variety of densities. The portfolio offers 10/100 and 10/100/1000 interfaces for a wide range of customer budgets and performance requirements.