The T-BERD/MTS 5800 handheld network tester is the tool network technicians and engineers need to install, activate, and maintain their networks. It supports all Legacy technologies (PDH/SDH/FC/etc) and emerging ones (OTN, ETH, CPRI, etc), needed to perform all network characterization measurements, including metro/core installations, mobile backhaul, and business services. This industry's smallest handheld instrument can test throughout the entire service lifecycle, including fiber characterization, service activation, troubleshooting, and maintenance. Advanced Ethernet test functions, such as TrueSpeed per RFC 6349, J-Profiler™, wirespeed capture/decode, and automated J-Mentor, help field technicians test their networks faster and more accurately than ever.