The 20-792 Daisy Chain Switching Module is designed for telecom test applications. It allows production or verification testing of SONET/SDH transmission multiplexers. Traffic is sequentially Daisy-Chained through all tributaries (or any selection of tributaries), modules can be cascaded to test any number of tributaries. Using built in Loop Back switches any selected Tributary can have its transmit port fed back directly to its receive port.A built in break-out multiplexer allows separate testing of individual ports
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