    AST RESEARCH, INC.         TECHNICAL BULLETIN # 0936                  6-10-94

                    GRiD 1680 MODEM FAILS TO OPERATE AT HIGH SPEED

    PROBLEM:        Unable to connect GRiD 1680 notebook with 14.4k internal modem,
                    at speeds greater than 2400 baud.

    CAUSE:          The modem may not be properly configured.

    SYSTEMS
    AFFECTED:           AST                                               REVISION
                    PART NUMBER     DESCRIPTION                             LEVEL
                    G201680         GRiD 1680 MONO                           All
                    G201685         GRiD 1680 COLOR                          All

    SOLUTION:       Use the following AT command sequence to ENABLE the modem’s
                    high-speed and data-compression features.

                            AT&F
                            AT&C1&D2\JO\N7\Q3%C1
                            AT&W

                    This sequence restores the modem to factory default settings,
                    enables the modem’s high-speed and data compression features,
                    and saves the setting to non-volatile RAM as the new
                    power-on defaults.  The modem will operate reliably at speeds
                    of up to 38.4k baud, provided there are no other failures.