Your Best Partner in Optical Communication
Connecting the World as One
Sunil Telecom Co., Ltd. is a specialized company in the optical communication industry, developing, manufacturing, and supplying comprehensive optical communication solutions. We focus on the Outside Plant (OSP) sector, providing advanced products such as fiber optic splice closures and optical termination boxes for both wired and wireless communication networks. Our excellence has been recognized by major domestic and international telecommunications providers.
Since being selected as an excellent partner by KT in 2001, Sunil Telecom has maintained a strong partnership with the company for over 18 years, establishing itself as a trusted manufacturerand supplier of optical communication equipment.
Our R&D and engineering departments have consistently driven technological innovation, holding over 30 patents and more than 10 utility model registrations. We are committed to quality and environmental management through ISO 9001, TL 9000, and ISO 14001 certifications, ensuring that we meet and exceed customer needs.
As of 2025, Sunil Telecom supplies products reliably to 49 clients in 32 countries. We continue to expand our business with leading domestic and global ISPs and optical network constructioi firms. Product design and quality are our pride, and we put “Customer First” into practice by offering competitive pricing and thorough after sales service.
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• Rugged bolt-type closure
• Supports up to 12-core splicing
• Fits splitters for FTTH use
• Allows straight and mid-span branching
• For underground, aerial, or direct buria 
• Clamp-type closure for easy opening
• Patented cable fixing device applied
• Supports adapter & splitter for FTTH
• Holds ^16mm cables with single gasket
• Ideal for emergency use & low core count 
• One-touch ring type closure
• Supports up to 96-core splicing
• Weather-resistant high-strength plastic
• Easy install: aerial, underground, duct, pole
• 6 ports for straight & mid-span branching 
• Made of weather-resistant high-strength plastic
• Holds up to 2 splitters on both sides of splice tray
• Uses same locking mechanism as standard IDC boxes
• Fast, easy installation with field-assembly connectors
• Outdoor type; mountable on poles or building walls 
• One-touch ring type closure
• Supports up to 96-core splicing
• Weather-resistant high-strength plastic
• Easy install: aerial, underground, duct, pole
• 6 ports for straight & mid-span branching 
• Made of weather-resistant high-strength plastic
• Holds up to 2 splitters on both sides of splice tray
• Uses same locking mechanism as standard IDC boxes
• Fast, easy installation with field-assembly connectors
• Outdoor type; mountable on poles or building walls 
• Wall-mounted inside building distribution box
• Compact size for easy internal installation
• Supports up to 8 lines using RN splitter
• Connects fiber cables to optical transmission devices
• Supports adapter panel, splice tray, and RN splitter
• Optimized for efficient fiber management 
• Ultra-compact size
• Low insertion loss (IL), low polarization dependent loss (PDL)
• Wide operating wavelength range
• Customizable to meet customer requirements 
• Compatible with both single-core and ribbon cables
• Adjustable blade height via center bolt for various cable diameters
• Easy operation with rotating blade bolt
• Strips cables with diameters from 1 Omm to 25mm 
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