ONT-503 Optical Network Tester (Discontinued)

Design, Conformance, and Verification Testing for Converged Transport and Datacom Environments in One Powerful Solution.

The versatile ONT-503 allows to integrate all modules available for the ONT-5xx family. Its form-factor and the breadth of demanding test applications for e.g. 40/43G, Carrier Ethernet and Multichannel makes it the test set of choice for system verification groups and early deployers at Network Manufacturers' as well as Providers' companies.


  • First portable 40/43G (SDH/SONET/OTN) test solution for high-sophisticated R&D, system verification and certification measurements
  • Combination of multiple technologies and multiple ports for fast and flexible testing.
  • Broad selection of plug-in instrument modules for carrier Ethernet testing, SDH/SONET, PDH/DSn, OTN, EoS, Jitter.
  • Portable jitter testing with industry leading accuracy compliant to ITU-T O.172 appendix 7 and 8.
  • Preventing measurement gaps by analyzing 1000 channels in parallel of SDH/SONET and ASON systems.
  • Real multi-user behavior leverages the mainframe investment.


  • 40/43G - Supports verification of 40G SDH/SONET and 43G OTU-3 network elements. It includes evaluation of physical layer and conformance testing of the transport layer.
  • High-accuracy Jitter/Wander - Allows for jitter and wander generation and high accuracy analysis of signals from 155 Mbps up to 10.7 Gbps.
  • 10G LAN/WAN/OTN - Addresses the need of board and system testing of LAN and WAN systems and is mapped into OTN overclocked.
  • OTN G.709 - Provides full functionality for system verification of 2.7, 10.7, and 43 Gbps equipment.
  • OTN overclocked - Complete testing of a 10GigE client in OTN 11.05/11.1G and 10G FC Layer 1 in OTN 11.27/11.32G.
  • MultiChannel SDH/SONET - Simultaneous testing of all 1000 channels of a 2.5 Gbps signal at STM-16/OC-48 or STM-64/OC-192 interfaces. Useful for CrossConnect testing with leaving no blind spots and turn-up testing for e.g. ASON.
  • NewGen EoS - Allows for evaluation of SONET/SDH signals up to 10 Gbps, including virtual concatenation, LCAS emulation, GFP, and Ethernet MAC traffic.
  • Ethernet - Enables generation and analysis of Ethernet traffic on electrical 10/100/1000M and optical GigE interfaces and allows for interworking with NewGen EoS.

Key Features

  • High coverage with 3-slot, multi-port mainframe.
  • Independent use of modules speeds up testing in Labs and customer sites.
  • Easy integration into automated environments with Tcl/Tk and LabWindows libraries, multi-user access, and Linux operating systems.
  • Portable with large, color, touch screen and easy-to-use GUI.
  • Handy form-factor and lightweight.


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