IDM DUP Centralized Channel Mutual Backup Switching Device

Some important remote dispatch and control sites (such as subways, airports, and military facilities) often require high system reliability, and frequently use services over two or more transmission networks (e.g., leasing channels from China Unicom and China Mobile separately, or satellite and terrestrial network mutual backup). User terminals require a device capable of automatically selecting the normal transmission network and channel, which necessitates our device—a channel switching device, lossless switching device, and mutual backup channel switching device.

The IDM DUP product supports multi-path transmission and active optimal path selection for E1 channels, telephone channels, pure audio channels, and RS232/RS485 channels.

The IDM DUP centralized channel mutual backup switching device provides 12 mutual backup switching card slots. It can support up to redundant dual CMU main control cards and dual redundant power supply cards. The mutual backup channel switching device is primarily designed to reduce service interruptions caused by transmission path failures or equipment failures.

Each user card slot supports automatic switching, network management switching, and manual switching, indicated by the mode indicator on the front panel. The mode can be set via the network management system or controlled by the mode switch button on the front panel.

The IDM DUP can accommodate telephone mutual backup cards, audio mutual backup cards, and E1 lossy/lossless switching cards, serving as a mutual backup channel device selector. The 4-position DIP switch on each card controls manual switching for channels 1-4 respectively (the E1 switching card has only two groups of E1 channel switching). Manual switching is only possible when the manual switching indicator is lit, ensuring lossless switching.

The centralized device features a 3U architecture with a unified Ethernet network management card, dual redundant power supply cards, and channel monitoring and switching can be implemented through the network management system. The switching conditions are configured via the network management system, allowing automatic switching or manual forced switching via the network management system or DIP switches, with manual switching having higher priority.