ocr: MMTUSpeed Pro 4.0 for Windows NT MTU Registry Utilities Modem About Basic Settings 1 Modems found in Registry. Current Modem Optimum Settings Motorola VOIcesURFR 56K External Automatic Settings Current Init String Change MTU Registry Key: 10000 Change. PWIN Re-Read Modem Data from Registry Remove Settings Write thelnits String to thel Flegistry Update Flegistry Apply MTU value to all TCP keys? V RWIN enabled by Basic and Optimum buttons? v