    AST RESEARCH, INC.         TECHNICAL BULLETIN #0706                  09-25-91

               IBM PS/PC SOFTWARE AND PREMIUM EXEC INTERNAL DATA MODEM

    PROBLEM:       IBM Personal Services/PC (PS/PC) software does not operate
                   correctly with the Premium Exec Internal Data Modem.  When
                   attempting to make a connection, the modem handshakes but will
                   not link to the mainframe.

    CAUSE:         Incompatibility between IBM PS/PC software version 1.3 release
                   PSPC13003 and the Premium Exec Internal Data Modem.

    SOLUTION:      This is not an issue that AST can resolve.  IBM PS/PC software
                   version 1.3 release PSPC13006 resolves this problem.
                   Customers experiencing this problem should contact IBM to
                   obtain the above release of the PS/PC software.