Ciena’s 3930 is an advanced networking system focused on the transition to high-bandwidth applications requiring sophisticated Quality of Service (QoS) capabilities, including mobile backhaul and Ethernet business services. The 3930 features a high-capacity switching fabric, two NNI SFP+ ports that support 1GbE or 10GbE, 4 100/1000M SFP UNI ports, and 4 dual-mode UNI ports (10/100/1000 RJ-45 and 100/1000 SFP). The 3930 provides a temperature-hardened single rack unit form factor (1RU) with redundant AC or DC power supply modules.