micor (Michel B. Cormier (SYSOP)) (08/27/90)
Hi world: As anyone been able to setup xenix with a TrailBlazer (actually a telebit T2500) such that the getty always runs at 19200bauds and the modem accepts calls at any speed??? I've been trying to do this, but was unsuccessful. If anyone knows the solution (re: a copy of your telebit setup and of your gettydefs entry!), could you send it to me???? Please email any response to: ...!watmath.waterloo.edu!isishq!micor!michel (the path in the header is probably wrong!) as I do not currently receive this newsgroup on my machine. Thanks -- Michel B. Cormier | uucp: watmath.waterloo.edu!isishq!micor!michel MiCor Computing Services | 410-180 Lees Ave. | Voice: (613) 231-6247 Ottawa (Ont). K1S 5J6 | BBS: (613) 237-5077
shwake@raysnec.UUCP (Ray Shwake) (08/29/90)
mcormier@isishq!micor (Michel B. Cormier (SYSOP)) writes: > As anyone been able to setup xenix with a TrailBlazer (actually a >telebit T2500) such that the getty always runs at 19200bauds and the >modem accepts calls at any speed??? I've been trying to do this, but >was unsuccessful. There are a number of viable approaches, but it could be the SPEED being attempted that's the problem. Some boxes/ports simply can't run reliably at that speed, whereas they could handle 9600 without problem. (My NEC 386/20 is in that category, whether running Xenix/386 or SCO UNIX.) Some have resorted to hardware/software upgrades (like the 16550/FAS) to handle such problems. (If yours doesn't work at 9600 either, write and we'll outline our own approach.)
itkin@mrspoc.Transact.COM (Steven M. List) (09/01/90)
mcormier@isishq!micor (Michel B. Cormier (SYSOP)) writes: > As anyone been able to setup xenix with a TrailBlazer (actually a >telebit T2500) such that the getty always runs at 19200bauds and the >modem accepts calls at any speed??? I've been trying to do this, but >was unsuccessful. There are several registers that need to be set properly. S50 and S51 set up the Interface Speed and Transmission Speed. The Interface Speed is the speed for communication between host and modem - fix this at PEP (19200). The Transmission Speed is the speed for communication between your modem and another modem. Set this to autobaud. There is another register (can't remember which) that sets the modem to lockstep the interface and transmission speeds - set this to permit the two speeds to be different. And there is a register that determines whether to send the PEP tones first and 1200 baud tones last or vice versa. This will make it quicker for low-speed dial-ins if you use the low-speed tones first. However, if you do so it will also cause any Telebits that are set to autobaud on dial OUT to lock in at low speed too! We have taken two approaches: send the PEP tones first AND set modems that dial IN to our system to fixed transmission speeds. Good luck! We've been using TB+ modems for 2 years or more with no problems and great success and happiness. We dial in with 1200 and 2400 modems of various types as well as Telebit T1000 and TB+ modems. -- +----------------------------------------------------------------------------+ : Steven List @ Transact Software, Inc. :^>~ : : Chairman, Unify User Group of Northern California : : {apple,coherent,limbo,mips,pyramid,ubvax}!itkin@guinan.Transact.COM :