============================================================================= AST RESEARCH, INC. TECHNICAL BULLETIN #0652 12-11-90 ============================================================================= STARTEC BALUN HUB WITH AST5251/11 EMULATION The following problems have been reported using Startec Balun Hub devices with all AST5251/11 emulation cards: - Intermittent dropping of sessions. - Inability to get a sign-on screen when connecting to the Balun Hub. Startec has made modifications to resolve these problems, incorporating the changes at serial number 37000 and above. Customers with hub devices below serial number 37000 should contact Startec at (508) 393-9393.