Digital Equipment Corp is perhaps the least visible of the majors that are contending for a slice of the multimedia professional equipment market, but the company is quietly picking up a fair bit of business: it now has an OEM contract from USA Video Corp under which the companies will work to increase their shares of the video-on-demand market – USA Video says it will incorporate DEC’s interactive video server technology into its overall video-on-demand system; USA Video plans to participate in Bell Atlantic Corp’s trial of the service via its Chesapeake & Potomac Telephone Co of Virginia, operating as a video information provider and providing interactive video service using DEC’s interactive video server technology this spring.