The NPort 6600 series are a range of 8, 16 and 32 port serial to Ethernet converters that can operate as fully-fledged terminal servers. They have many advanced features including SSL security, "any baud rate" capability and port buffering that stores serial data if the Ethernet connection is lost. A range of network expansion modules provide GPRS, PSTN and fibre-optic connectivity if alternate LAN / WAN connectivity solutions are required.
The units are available as 48Vdc or mains powered.