MultiCom Backup IV router

The LIGHTNING MultiCom Backup IV delivers fully secure and reliable network connectivity for remote workgroups.
The MultiCom Backup IV is a multiprotocol router and bridge for remote network access. It routes TCP/IP, while bridging other protocols. Up to ten remote locations can be served simultaneously. The MultiCom Backup IV is also a Leased Line backup unit and rate-adaptation unit providing bandwidth-on-demand and backup over ISDN.
This 19 rack-mountable unit includes seven ports: Ethernet, two Leased Line serial interfaces (up to 2 Mbits/s each) and four ISDN basic-rate interfaces.