The Zoom/Modem V.92 EXT Model 3048 is a high-performance 56K fax modem that plugs into the serial port of a computer using a Windows, Macintosh, Linux, Unix or other appropriate operating system. The Model 3048's performance is enhanced by an on-board Controller, DSP (Digital Signal Processor) and ITU V.92 / V.44 standard compatibility. The Zoom/Modem V.92 EXT outperforms V.90 modems. ITU V.92 is a new standard for dialup modems. It, and its companion compression standard V.44, makes communications faster, easier and more enjoyable. The "automatic negotiation" or "handshake" at the beginning of a call can be over twice as fast with Zoom/Modem V.92 models than with V.90 modems. The new V.44 compression technology results in significantly faster Web browsing and download speeds. Upload speeds (before compression) with Zoom/Modem V.92 models can be up to 40% faster, too. As an added convenience, the Zoom/Modem V.92 EXT allows an incoming phone call to be received without losing an Internet connection. These dramatic improvements in performance are available to Zoom/Modem V.92 users whose ISP (Internet Service Provider) has upgraded to the new standard. The Zoom/Modem V.92 EXT Model 3048 is capable of receiving data from an Internet Service Provider (ISP) or online service over standard phone lines at speeds up to 56 Kbps uncompressed. Outgoing data is transmitted at speeds up to 48 Kbps. The Zoom/Modem Model 3048 includes V.80 capability for compatibility with H.324 standard point-to-point video telephony over regular phone lines. It also supports Group 3, Class 1 fax. The Model 3048 also features ZoomGuard?. ZoomGuard provides superior protection against lightning, the number one cause of modem failure. ZoomGuard is not only better than the "varistor" protection found on other modems, but also outperforms most stand-alone surge protectors. Bundled software includes hardware drivers and utilities plus fax/voice/ data communications, videoconferencing, Internet access, graphics editing and other useful programs. The Zoom/Modem V.92 EXT Model 3048 is made and supported by Zoom Telephonics, Inc., and is backed by Zoom's outstanding seven year warranty.