The psiber LE85S is a LanExpert LE85S Singlemode Network Analyzer provides expert assistance for all tiers of LAN installers, technicians and managers working with either copper or fiber media. An extensive suite of test capabilities of the psiber LanExper LE85S include: Link Detection, Ping and Trace Route to verify network connectivity; Single Ended or Inline Packet Monitoring, Filtering and Capture to identify and solve complex problems; User defined Traffic Generation and structured RFC 2544 Stress Test to predict network performance under varying load conditions; Loopback, VoIP and Email tests to ensure proper performance of key network services. The psiber LanExpert LE85S Singlemode Network Analyzer is a single solution for network professionals to quickly maintain and optimize networks from the fiber or cable to the packet.