PDH Microwave System QPSK Modulation; Low power consumption and high gain; ... ,13 GHz,15 GHz,18 GHz,23 GHz-Interface: 4E1, 8E1,16E1,E3,DS3,10/100M, ASI at 32Mb/s-Modular ... control and loop back test Technical Specification General:Capacity: 4E1, 8E1,16E1,E3,DS3,ASI,10/100M With maximum bit rate ...