Sprint will offer $448.8 million in a mixed cash and debt-assumption offer. MMDS, known informally as "wireless cable," is a service occupying bands between 5 GHz and 10 GHz. Originally used only for one-way private broadcast of cable signals, MMDS has been promoted as a wideband Internet access service, though its capacity is not as great as the 28-GHz LMDS service. ATI and other companies promoting MMDS have been in a financial slump in recent months, and the Sprint acquisition follows similar MMDS service acquisitions, such as MCI WorldCom's purchase of CAI Wireless Systems Inc.