Telesail Technology Co.,Ltd, is a telecommunications equipments and systems company headquartered in Beijing, China, founded in 2005. The company provides Broadband Internet access, unified communications products and solutions.Telesail core products are IP PBX, VoIP Access Gateway, Trunking gateway, VoIP phone, also including EPON optical line termination (OLT), EPON optical network unit (ONU), Planar lightwave Circuit (PLC) splitters and optical transceiver etc.Telesail's customers are primarily internet service providers and voip service operators . It is also an OEM and manufactures products which retail under other brand names.