Loop Telecommunication International, Inc. engages in the research and development, manufacture, and sale of user loop remote detection interface devices, security devices, dedicated line response devices, captioned telephones, intelligent network resource management multiplexers, and related components in Taiwan, rest of Asia, the America, Europe, and internationally. It also provides multi-service cross connect, SDH-SONET-MSTP multiplexer, TDM over IP/ethernet, PTN-MPLS-Carrier ethernet, fiber-DSL line extension, network management, wavelength division multiplexing, IIoT, information security system, loop products systems, and ethernet access and switch. In addition, the company offers technology, including synchronous digital hierarchy/synchronous optical networking; multiprotocol label switching - transport profile; carrier ethernet; TDMoE pseudowire; and time division multiplexing (TDM)-PDH access. It serves power utilities, enterprises and offices, public transportation, carrier backhaul, management, communication, and TDM over ethernet, as well as oil, gas, and petroleum companies. Loop Telecommunication International, Inc. was founded in 1991 and is headquartered in Hsinchu City, Taiwan.