The MT5656SMI-IP-92.R1-SP is a multi-modem modem unit from Multitech. It is a single modem unit which is used to connect multiple lines of service via a single modem unit. The MT5656SMI-IP-92.R1-SP supports V.90/V.34 (up to 33.6 Kbps), V.92 (up to 48 Kbps) and Internet protocols such as TCP/IP, UDP, and PPP. The unit utilizes Multi-Ports and is compatible with a variety of operating systems such as Windows 95, 98, ME, 2000, and XP. It is also compatible with Linux and Mac OS. The MT5656SMI-IP-92.R1-SP supports standard Pulse and Tone dialing, is equipped with a built-in data+fax and incorporates an array of features such as Caller ID, remote answering and auto-dialing. The MT5656SMI-IP-92.R1-SP is an ideal choice for home and small business users looking for reliable, hassle-free and cost-effective connectivity.