The Switched Multi-Megabit Data Service (SMDS) proposed by American Telephone & Telegraph (AT&T) is a system for the economical communication of large amounts of information with the same interconnect topology as the voice phone network. This system will be a catalyst technology to basic research in the United States. Engineering Design Team, Inc. (EDT) intends to develop a low-cost SMDS interconnect technology utilizing a hlghly-integrated single board interface which connects directlyto the phone service and eliminates the need for additional equipment. This board will be installed in a standard commercial computer which provides the network interconnect service. The proposed system will function at the DSI and DS3 levels. Development and implementation of this lowcost smds interfacewill allowtransferand sharingof inpormation between facilmes quickly and efficiently, and will result in dramatically lower connection costs, more users and lower connection tariffs.