Adtech (Spirent) AX/4000 OC-3c/STM-1 Single Mode Interface board.
Model 400301.
Used - Good Working Condition.
This combination port interface and faceplate provides a SONET OC-3c or SDH STM-1 physical connection for AX/4000 Generator, Generator/Analyzer and ATM Network Impairment Emulator test modules.
