# High Speed Serial Interface (HSSI)

Provides one or two HSSI ports (up to 52 Mbps). Each port allows you to choose from a range of connectivity options, including ATM, SMDS, Frame Relay, or private lines. Each of these options can be configured at speeds up to DS3 (45 Mbps) or E3 (34 Mbps). These different network connections require only software configuration.

A HSSI cable is required for each HSSI port.