Time&Frequency Solutions
Time & Frequency References
Time & Frequency Distribution
Test & Measurement
Network Solutions
L2 , L3 ,L4 Switchs
Backbone & fire wall system
Wireless System, IP Phone etc
SatCom Solutions
Telemetry System
VSAT System
Mini VSAT System
SI & Maintenance
Time&Frequency, Network SatCom Solutions Maintenance
CCTV & CATV System
정보통신 공사업 . etc