This Zy XEL SBG3500-N Triple-WAN VDSL/ADSL2+ Wi Fi Broadband Router is the 'multi-WAN gateway' that provides high-speed Internet access for business users. Featuring not only VDSL2/ADSL2+ functionality but also one Gb E WAN with Small Form Pluggable (SFP) interface, this Zy XEL SBG3500-N offers flexible multiple-WAN connectivity to adopt various Internet interfaces. It also enhances network performance for small businesses to pursue the ultimate success. Multi-WAN connectivity with load balancing & failover This Zy XEL SBG3500-N Wi Fi Broadband Router provides multiple WAN interfaces, including DSL & Gigabit Ethernet, for load balancing & WAN backup. Service providers can flexibly offer WAN services of the highest availability in one single box for small business owners to enjoy non-stop services. Powered by the load balancing & fail-over mechanisms among multiple WANs, it maximises WAN stability for missioncritical Internet applications with benefits of the integrated bandwidth. Increased bandwidth & flexible range The advanced VDSL2/ADSL2+ bonding & dual-personality Ethernet WAN functionalities enable service providers to increase bandwidth & extend coverage. With the available copper lines, service providers can take advantage of VDSL2/ADSL2+ bonding to not only provide higher speeds for the existing subscribers, but also improve the user experience for those who are far away from the cabinet with stable, sufficient bandwidth regardless of the distance. Besides, if fibre lines are preferred, this Zy XEL SBG3500-N Wi Fi Broadband Router can use the Small Form Pluggable (SFP) interface to connect Fibre Ethernet for distances much longer than Gigabit networks, or simply connect to other Ethernet WAN devices without additional cost laying new fiber. Robust security design Based on Access Control List (ACL) rules, Stateful Packet Inspection (SPI), Denial of Service (Do S) & Distributed Denial of Service (DDo S) measures, This Zy XEL SBG350