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  • About Us


    coretree logo Revenue $ 4,000,000 USD (2014)
    Employees 22 (12 researchers)
    Key Accounts key accounts


    • 2014
    • To Develop Connected and Satellite Solutions to Support Integrated Service
    • 2013
    • To Supply Middle Size IP-PBX for Ship/Marine
    • 2012
    • To Develop Middle/Large Capacity IP-PBX and Related S/W
    • 2011
    • To Reach 10,000 Enterprise Customers in Korea
    • 2010
    • SKB, LGU+, KCT, ONSE BMT/IOP Passes
    • 2009
    • KT IOT Passed
    • 2008
    • KT BMT for IP-PBX
    • 2007
    • Research Laboratory Founded in Daejun
    • 2006
    • To Develop Small IP-PBX & Call Agent for KT

    Coretree’s IP based cutting edge technology can manipulate the next generation of IoT environment


    coretree about us



    Our leading IP technology with embedded system, software, and solution supports various requirements of the global market.


    coretree about us

· wireless internet router products

· small ip pbx system

· small business pbx phone

· hybrid ip pbx system

· call forwarding ip pbx

· ip pbx linux server

· door lock control system

· ip contact center solution

· voice message send solution

· satellite internet solution

· satellite pbx internet solution

· coretree