dennett@kodak.com (Charlie Dennett) (12/21/88)
In article <1517@spp2.UUCP> wiley!spp2!news@uunet.uu.net (NETNEWS) writes: >I have a Sun 3/50 running SunOS 4.0 and I'm trying to get ttya and/or ttyb >to be able to both dialin and dialout. > >I have no problems dialing out, but when I dial in I get no login prompt. >... The only thing you did not mention was making a new entry in /dev with the same major devide number as /dev/ttya but with the minor device number 128 greater. This sounds like the same thing that happened to me on my 3/260 when I installed 4.0. When I went to test the modem I could dial out fine. I then went back to my desk where I have a modem attached to a terminal. I dialed the modem on my Sun and I did not get a login prompt. The modem on the Sun has a built in speaker and I head the following when it answered the phone: a single frequency tone, then another single frequency tone that was higher in frequency than the first. That was it. I'm used to hearing the usual "modem noise" after the second tone, but it never happened. Now for the strange part. I (and others) can dial in to the Sun from other places (home, for example) and it works, so it would seem that the modem (and getty process) on the Sun are not the problem. But, I can also use the modem at my desk to call other systems, so it would seem that it is not that, either. Let's see. What does that leave as a possible cause of the problem? I'm also interested in a solution to this problem. Everyting worked when I was on 3.5. My modem in on ttya (renamed to ttyd0 with cua0 as the outgoing device.) I've also had problems with the serial printer I have on ttyb. The flow control does not seem to work any more. I've had to cut back on the baud rate to keep from losing characters. Charlie Dennett - Eastman Kodak Company UUCP: ...rutgers!rochester!kodak!dennett ...rutgers!rochester!kodak!cygnus!dennett
prc@uunet.uu.net (Robert Claeson) (12/23/88)
wiley!spp2!news@uunet.uu.net (NETNEWS) writes: > I have a Sun 3/50 running SunOS 4.0 and I'm trying to get ttya and/or ttyb > to be able to both dialin and dialout. ... > I have no problems dialing out, but when I dial in I get no login prompt. Try enabling getty again. That should give you a login prompt. Robert Claeson, ERBE DATA AB, P.O. Box 77, S-175 22 Jarfalla, Sweden Tel: +46 758-202 50 EUnet: rclaeson@ERBE.SE uucp: uunet!erbe.se!rclaeson Fax: +46 758-197 20 Internet: rclaeson@ERBE.SE
shj@ames.arc.nasa.gov (Steve Jay) (01/05/89)
In v7n67, Charlie Dennett (dennett@kodak.com) describes a situation where
a modem in his office can't dial successfully to the modem connected to
his Sun, but calling from home works.
This may be a strictly modem/phone-line weirdness, having nothing to do
with the Sun. Some modems have a feature called "call-progress detection"
whereby they listen on the phone line for ringing, busy signals, and dial
tones so they can give you the progress of the call. Unfortunately, some
of these modems get confused if they hear the answer tone BEFORE hearing
at least one ring. Some newer phone systems will ring the called phone
before they send the ring sound to the caller. So, particularly on
internal calls where there are mimimal delays, the called modem may answer
and send its tone before the calling modem has heard a ring. Some modems
will not recognize the answer tone in this situation.
The timing of calls which come in from outside the local phone system is
such that the caller always hears at least one ring. This may explain why
you can call from home, but not from your office.
Check the manual for the calling modem...it probably tells how to disable
the "call-progress" feature. With that feature disabled, the office ->
Sun connection may start working.
I got this information from article <505@drilex.UUCP>, dated 20 Mar 88, in
comp.dcom.modems, sent by {harvard!axiom,linus!axiom,ll-xn}!drilex!dricej
(Craig Jackson).
Steve Jay domain: shj@ultra.com
Ultra Network Technologies Internet: ultra!shj@ames.arc.nasa.gov
101 Daggett Drive uucp: ...ames!ultra!shj
San Jose, CA 95134
408-922-0100