Designed from the ground up for this carrier reality, the Extreme Networks BlackDiamond 20808 switch gives service providers the tools they need to compete effectively while satisfying their customers' needs and expectations.BlackDiamond 20808 switches allow a single carrier Ethernet network to deliver residential services, business services and wireless backhaul services. Residential services can include triple- and quad-play telephony services, IPTV, tiered Internet access, and more. Business services can include standard E-Line and E-LAN to connect multiple sites, plus tiered Internet access and VoIP with hierarchical bandwidth controls to individual businesses. Wireless backhaul services deliver the bandwidth needed for multimedia devices running on 3G wireless networks.