============================================================================= AST RESEARCH, INC. TECHNICAL BULLETIN #0780 10-28-92 ============================================================================= PREMIUM EXEC AND ULTRACOM 9600 MODEM PROBLEM: The modem for the Exec will not sync down to 2400 BAUD while communicating with an UltraCom 9600 modem. The message "no carrier" appears on the screen and no connection is made. CAUSE: The Rockwell modem firmware contains an error, creating this condition. SYSTEMS AFFECTED: All models of the Premium Exec notebook. SOLUTION: Replace modem, part number 230175-002 revision C with a revision D.