Lenovo ThinkPad 770E-ED TP 770X User's Reference that shipped with the system - Page 183
U.S. Robotics 56K Technology** Protocol with data rates of 56, Kbps Windows 98, Windows 95
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Features ITU-T V.34 up to 33.6 Kbps-data modem with data rates of 2400, 4800, 7200, 9600, 12000, 16800, 19200, 21600, 24000, 26400, 31200, and 33600 bps. ITU-T V.32bis protocols with data rates of 4800, 7200, 9600, 12000, and 14400 bps ITU-T V.32 protocols with data rates of 4800, 9600 uncoded, and 9600 bps Trellis coded ITU-T V.21/V.22, V.22bis protocols with data rates from 300 bps to 2400 bps Hayes** AT command set compatibility Asynchronous error recovery protocol Microcom Network Protocol (MNP**) protocols - Error correction via MNP classes 1-4 - Data compression via MNP class 5 and V.42bis - MNP class 5 for up to 2x data compression VoiceView (Windows 98 and Windows 95 only) U.S. Robotics 56K Technology** Protocol with data rates of 56 Kbps (Windows 98, Windows 95, and Windows NT only) Facsimile (fax) modem functions Class 1 fax modem Class 2 fax modem G3 transfers ITU-T T.4 and T.30 operations ITU-T V.27ter-2400/4800 bps send/receive ITU-T V.29-7200/9600 bps send/receive ITU-T V.17-14400 bps send/receive Appendix A. Features and Specifications 169