... in one pair of Fiber. It can also provide centralized rack structure for easy maintenance as well as plug and play, ... interfaceE1 and V.35 channel switch overProvides a management interface for centralized monitoring, and support system upgradingAdopt large-scale chip, simple ... environments: -48VDC or 220VACSmall, light, stable, reliable and easy for installation Multi-Service Optical Fiber Modem