Short for
High-Speed Serial Interface. HSSI is a
serial interface that supports transmission rates up to 52
mbps. It is used to connect
routers on
local area networks with
wide area networks over a
680x0 or similar high-speed line. HSSI can also be used to provide high-speed connectivity between LANs, such as
token ring and
Ethernet.
HSSI is a DTE /DCE interface developed by Cisco Systems and T3plus Networking to address the need for high-speed communication over WAN links.