... Greatly improve the bit error rate performance of the system, and the anti-interference ability, anti-multipath fading. ... and frequency diversity backup, stronger stability and reliability;9. Support analog service telephone call or digital IP ... RS232C, RJ45Management interface100Mbit/s, 10/100BASE-T, RJ45Operating systemWIN2000 / WINDOWS NT / WINXPMechanicsSize (mm)IDU:482 × 44× 265ODU:265×265 ...