Xref: utzoo comp.os.vms:9659 comp.dcom.modems:2798
Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!killer!texbell!sugar!ficc!uunet!kddlab!ccut!tansei!c31293
From: c31293@tansei.cc.u-tokyo.JUNET (Kenji Rikitake)
Newsgroups: comp.os.vms,comp.dcom.modems
Subject: Re: How to change modem polling timing of VMS
Summary: Modems caused the troubles
Message-ID: <2538@tansei.cc.u-tokyo.JUNET>
Date: 26 Oct 88 08:08:11 GMT
References: <2484@tansei.cc.u-tokyo.JUNET> <350@decus.com.au>
Reply-To: c31293@tansei.cc.u-tokyo.JUNET (Kenji Rikitake)
Organization: Wada Lab., Dept. of Mathematical Engineering, Univ. of Tokyo
Lines: 30


>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)