Specifications include, but are not limited to: The City of Lincoln, LTU-Traffic Engineering Department, is requesting bids from qualified companies, to provide Network Switches and Accessories. EKI-7712G-4FPI-AE, 8GE + 4SFP Port Managed Ethernet PoE Switch w/Wide Temp • 8 Gigabit ports + 4 SFP ports • SFP socket for Easy and Flexible Fiber Expansion • Redundancy: X-Ring Pro (ultra high-speed recovery time < 20 ms), RSTP/STP (802.1w/1D) • IXM function enables fast deployment. • Security: 802.1x (Port-Based, MD5/TLS/TTLS/PEAP Encryption), RADIUS • NEMA TS2 for Traffic Control • EN50121-4 approval for Railway trackside deployment • -40 ~ 75°C wide-range operating temperature (EKI-7712G-4FI) • Dual 12~48 VDC power input and 1 relay output ;