c31293@tansei.cc.u-tokyo.JUNET (Kenji Rikitake) (10/05/88)
I'm using MicroVMS 4.4 on MicroVAX ][. VMS polls each modems by setting DTR 30 seconds ON and 5 seconds OFF periodically. And this causes a trouble. I'm using Hayes-compatible modems as frontends, and I set them to reset when DTRs drop off. And I recently found it disconnected incoming calls very often, since VMS turns off DTR whatever modems are doing. <sigh> I have a question. Does anyone know how to make the polling cycle longer? (like hit a patch to SYS$SYSTEM:TTDRIVER.EXE) Or are there anybody who have same problem? Reply on comp.os.vms, or sending mail to me is greatly appreciated. -- Kenji -- Kenji Rikitake / Wada Lab., Information Engineering Course Univ. of. Tokyo graduate school / Phone +81 3 812 2111 ext 7411 Also assistant sysop of TWICS Co.: office +81 3 351 5977 (uucp/dasnet : Kenji%DCTWCS.DAS.NET@Sun.COM)
taylort@decus.com.au (Trevor Taylor (Graphics SIG Chairman)) (10/13/88)
In article <2484@tansei.cc.u-tokyo.JUNET>, c31293@tansei.cc.u-tokyo.JUNET (Kenji Rikitake) writes: > VMS polls each modems by setting DTR 30 seconds ON and 5 seconds OFF > periodically. And this causes a trouble. I'm using Hayes-compatible > modems as frontends, and I set them to reset when DTRs drop off. > And I recently found it disconnected incoming calls very often, > since VMS turns off DTR whatever modems are doing. <sigh> I don't believe this should happen if the modem is set up correctly as well as the terminal port. We use a setting of TTY_DIALTYPE = 1 in SYSGEN which is required for Europe, UK, Australia, etc., and I don't think it drops DTR for as long as 5 seconds, only one second. Still, any dropping of DTR is probably too much ... > Does anyone know how to make the polling cycle longer? The SYSGEN parameter TTY_SCANDELTA determines the polling interval. Trevor
c31293@tansei.cc.u-tokyo.JUNET (Kenji Rikitake) (10/26/88)
>taylort@decus.com.au (Trevor Taylor (Graphics SIG Chairman)) writes: >I don't believe this should happen if the modem is set up correctly as >well as the terminal port. We use a setting of TTY_DIALTYPE = 1 in >SYSGEN which is required for Europe, UK, Australia, etc., and I don't >think it drops DTR for as long as 5 seconds, only one second. Still, >any dropping of DTR is probably too much ... Well, I found the reason why VAX dropped DTR. The modem's DSR was set to always ON: when I reset our modems to keep DSR off when they were not connected, 99% of troubles were disappeared. Another problem arises: the LOGOUT/NOHANGUP command does not work properly. Does anyone know its general behavior on DIALUP terminals? >The SYSGEN parameter TTY_SCANDELTA determines the polling interval. Hmmmm. I think I don't have to change it; rather want to solve the problems in more straight way. > Trevor Anyway, I greatly appreciated your help, Trevor. -- Kenji Rikitake -- Kenji Rikitake / Wada Lab., Information Engineering Course Univ. of. Tokyo graduate school / Phone +81 3 812 2111 ext 7411 Also assistant sysop of TWICS Co.: office +81 3 351 5977 (uucp/dasnet : Kenji%DCTWCS.DAS.NET@Sun.COM)