jr@einstein.dkw.com (J.R. Jesson) (04/27/91)
I have an hp9000/822 with a HP-PB 8 Line mux (HP 40299A). I'm having trouble setting up the mux device so that it will recognize when my telebit trailblazer modem has lost carrier - so that it will then hang up the interactive session. I've wired a "CCITT" modem cable as suggested in the documentation on the mux and I've configured the tty0px device in both simple and ccitt mode, with the dial-out or dial-in attribute set; in short I've tried everything I know to do. I would appreciate any input on this problem; the HP machine is not supposed to be my main worry. J.R. ------------------------------------------------------------------------------- DKW Systems Corporation 4050 INFOMART 1950 Stemmons Freeway, Dallas, Tx 75207 (214) 517-0576 "Unix? We don't need no stinkin' Unix!" ------------------------------------------------------------------------------- -- ------------------------------------------------------------------------------- DKW Systems Corporation 4050 INFOMART 1950 Stemmons Freeway,
franks@hpuamsa.neth.hp.com (Frank Slootweg CRC) (05/01/91)
See MODEM(7) for a description of CCITT and simple mode. In general you should use a simple mode device file (even in Europe and even if you have a modem which is CCITT compliant). In our experience in only a very few cases (much less than 5%) CCITT mode is required. In all other cases it creates more problems then it solves. The reason: Most "CCITT compliant" modems are only compliant if you specifically configure them to be so, the defaults are often not CCITT compliant. Hope this helps. Frank Slootweg, HP, Dutch Customer Response Center.