Psiber Data Systems
designs and manufactures test equipment for ethernet LAN and CATV networks. Psiber is an employee owned company committed to the development, manufacture and marketing of electronic test instruments for the rapidly expanding LAN data communications world, including the CATV broadband arena.
Their product line includes a series of LAN Network Link Testers, as well as more advanced network analyzers that include ping function. The latest addition to Psiber's product line is LanMaster 35 PoE VoiP tester.