Sonet network analyzer
A Sonet version of the ANT-20 advanced network analyzer covers all conventional bit rates, mappings and interfaces from DS-1 to OC-48, including evaluation of TOH and POH bytes, error analysis, and comprehensive alarm and pointer evaluation. It can be equipped to test the service quality of ATM links, or SDH features can be added for testing international gateways. Users can switch between 1310 and 1550 nm at all levels up to OC-12.
Wandel & Goltermann, Research Triangle Park, NC