IDM E1_DUP E1 Lossless Channel Mutual Backup Switching Device

Some critical remote dispatch and control sites (such as subways, airports, and military facilities) often require extremely high system reliability, frequently utilizing services across 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.

The IDM series products are capable of supporting multi-path transmission and active optimal path selection for E1 channels, telephone channels, pure audio channels, as well as RS232/RS485 channels.

The IDM E1_DUP E1 Channel Mutual Backup Switching Device splits one E1 channel into multiple transmission paths (supporting more paths when cascaded), automatically detects the transmission quality of these paths at the remote end, and then automatically selects the path with the best transmission quality.

E1 channel switching is divided into lossy switching and E1 lossless channel switching. E1 lossless channel switching ensures that no information is lost before and after the switchover. Since the transmission delays of leased channels vary, E1 lossless channel switching requires data to be transmitted based on the slowest channel to avoid data loss, as in power utility applications. In contrast, for voice applications in military, air traffic control, and similar fields where rapid command response is critical, lossy switching mode based on the minimum experimental delay is typically required.

The IDM E1_DUP is available in both desktop and centralized configurations. The desktop unit provides 2 sets of E1 mutual backup channel selectors.

The centralized unit features a 3U architecture, with a unified Ethernet network management card, dual redundant power supply cards, and E1 channel monitoring and switching that can be managed via the network management system. The switching conditions are configured through 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.