DZS

Telecommunications and computer equipment, namely, computer network hubs, computer switches, L3 and multiprotocol label switching (MPLS) network routers, modems, concentrators in the nature of computer network hubs for providing wired and wireless connectivity between local area networks (LAN) and wide area networks (WAN), cell site air interfaces and wireline mobile backhaul (MBH) networks all in the nature of computer network interface devices, multiplexers, aggregators in the nature of a remote access computer network hub, digital subscriber line access multiplexers (DSLAMs), broadband loop carriers (BLCs), circuit boards for installation at a telephone central office or switching office, telecommunications network management software, software for managing customer premises equipment (CPE) in the form of optical network terminals (ONTs), and optical line terminal (OLT) communications devices that enable an interface between a fiber optic network and other copper or fiber communications networks for transporting and aggregating voice, data, and video communications via fiber networks across multiple network infrastructures and communications protocols, namely, local area networks (LANs) using passive optical splitters to enable a single optical fiber to serve multiple premises