The RICi-E3 is a Fast Ethernet over E3 Intelligen Network Termination Unit.
This is the kind of device you would have used to encapsulate an Ethernet over a PDH network, specifically over the E3 (34Mbps).
- 1x 10/100 Base-T Ethernet
- 2x BNC connectors (E3 unbalanced, 75 Ohms)
- 1x DB-9 RS-232 console port