Switched Multi-megabit Data Service uses fixed length cell switching and runs at speeds of 1.533 to 45Mbps.
Switched Multimedia/Multi-Megabit Data Service
Switched Multimegabit Data Service. A cell relay based service, like ATM, providing connectionless public broadband services. Typically provided by large network operators like BT and intended as a LAN interconnect service or a VoIP service and often configured as a VPN (virtual private network) by corporate users.
A standard for very high-speed data transfer.
(Switched Multimegabit Data Service) -- A high-speed, fiber-based LAN interconnection service that allows users to use a public network service to allocate wide area bandwidth as it is needed.
Switched Multimegabit Data Service. A metropolitan area packet switching data network using T-1 and T-3 lines.