IDM E1_DUP E1 Lossless Channel Mutual Backup Switching Device

Some important remote dispatch and control sites (such as subways, airports, and military facilities) often require highly reliable systems, and frequently use services over two or more transmission networks (e.g., leasing channels from China Unicom and China Mobile respectively, 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 can meet the multi-path transmission and active optimal path selection for E1 channels, telephone channels, pure audio channels, and RS232/RS485 channels.

The IDM E1_DUP E1 Channel Mutual Backup Switching Device splits one E1 channel into multiple transmission paths (supporting more paths after cascading), 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 switching. Since the transmission delays of the leased channels vary, E1 lossless channel switching requires data to be sent based on the slowest transmission channel, as applications such as power utilities cannot afford data loss. In voice applications in military, air traffic control, and other fields, however, commands must be received as quickly as possible, and lossy switching mode based on the minimum transmission delay is typically required.

The IDM E1_DUP is available in desktop and centralized configurations. The desktop device provides two sets of E1 mutual backup channel selectors.

The centralized device adopts a 3U architecture, with a unified Ethernet network management card, dual redundant power supply cards, and E1 channel monitoring and switching that can be implemented through the network management system. The switching conditions are set by the network management system, and switching can be automatic or manually forced via the network management system or DIP switches, with manual switching having higher priority.