DI-1750/2630

One-port serial, async, and sync (up to 2 Mbps)

Two-port serial, async, and sync (up to 2 Mbps)

One-port channelized E1/ISDN PRI

One-port 10Base-T Ethernet + one-port serial, async, and sync (<2 Mbps)

One-port ISDN BRI S/T interface

One-port ISDN BRI U Interface

One-port DDN Lease Line

8-ports asynchronous serial

Two-port FXS

Two-port FXO (including DSP)