Jae-Hwa Ko

Signal Entertainment Group Corp. engages in the network consulting and integrated services. It operates through the following businesses: Digital Broadcasting Media, Wire and Wireless Network Optimization, Trunked Radio System (TRS) Wireless Networks, Integrated Wireless Broadband, Motorola Radios and Network Video Detection. The Digital Broadcasting Media offers products such as cable modem termination system and switched digital video. The Wire and Wireless Network Optimization provides products such as transmission medium, base-station equipment, optical termination equipment, optical repeaters and fiber optic cable. The TRS Wireless Networks offers trunked communication system called Dimetra Internet Protocol (IP). The Integrated Wireless Broadband business provides PTP backhaul and canpy backhaul. The Motorola Radios business offers wireless communication solutions for radio communication devices. The Network Video Detection business provides closed circuit televisions such as speed dome, box, dome and specialized types, video server, storage server, control software and application solution. The company was founded on January 18, 1991 and is headquartered in Seoul, South Korea.

Dream T Entertainment Co., Ltd. produces music records. It also provides artist management services. The company was founded on July 28, 2009 and is headquartered in Seoul, South Korea.