OPNET Technologies Co., Ltd. designs, manufactures, and markets telecommunication network access and optical transport equipment in Taiwan, Turkey, and internationally. It operates through Access Network and Broadband Equipment, Transmission Equipment, and Other segments. The company offers optical fiber broadband user access network systems, synchronous and asynchronous digital transmission multiplexers, asymmetric and symmetric digital subscriber loop systems, broadband modems, router and access systems, broadband wireless communication equipment, digital data and voice integrated access equipment, and optical fiber communication systems. It also engages in the design and processing of computer peripheral products; international trade; and provision of system planning, construction, and after-sales services. The company serves incumbent fixed-network operators, mobile operators, cable TV operators, utility companies, enterprises, and military entities. OPNET Technologies Co., Ltd. was founded in 1991 and is headquartered in Hsinchu City, Taiwan.