• Westermo Teleindustri AB

Ethernet Extenders

DDW-221 and DDW-222 have been added to Westermo’s Wolverine series of Ethernet extenders. They have all the same features as their predecessor, the DDW-220, but also provide integrated serial port and redundant rings support. The most critically demanding applications are targeted: traffic management, airports management, on board railway signalling, critical process control, etc. Both for DDW-221 and DDW-222, the redundant protocol can be used either on the SHDSL interface or on the built-in Ethernet switch. It uses Westermo’s unique FRNT (Fast Recovery of Network Topology) technology, which is the fastest protocol on the market to re-configure a network in the event of any link or hardware failure. Further, the DDW-222 includes a RS-232 serial adapter and 10-port Virtual Com port re-director software, which re-directs a Com port to an IP address. Pre-existing programs that use Com ports can then be reused in IP networks. The cables of existing serial networks can be reused to create an Ethern