Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!rphroy!caen!math.lsa.umich.edu!sharkey!wyn386!wybbs!rickt From: rickt@wybbs.mi.org (Rick Tucker ) Newsgroups: comp.unix.xenix.misc Subject: Re: Altos 586 using a 2400b Modem Summary: possible bug in altos xenix Message-ID: <394@wybbs.mi.org> Date: 18 Apr 91 05:17:17 GMT References: <233@willow.MV.COM> Reply-To: rickt@wybbs.UUCP (Rick Tucker ) Organization: Consultants Connection, Jenison MI Lines: 90 In article <233@willow.MV.COM> shawn@willow.MV.COM (Shawn M. Rogers) writes: >Hi, > >I've got a client using an Altos 586. I would like to provide support >via modem since their site is somewhat far away. The machine has 1 >port available (tty6). > >According to the manual, the jumpers at location E-17 on the motherboard must >be changed from 4-6, 1-3 to 3-4, 5-6. I made this change. I then ran >'pconfig' and configured tty6 as a 2400 baud modem port. The manual says that >the following command must be issued by root, which I did: > > disable tty6 > /etc/modem tty6 > enable tty6 > >The Problem: The modem is not answering the phone, so I cannot get a login. >The type of modem being used is just your basic 2400 Hayes compatible type >modem. The cable I'm using was made using the pinouts in the manual. > >Any help getting this thing working would be greatly appreciated. Thanks! Why can't you move one of their printers to port 6 and then use the free port for your modem? I have run into two problems with Altos 586/986 boxes in the past dealing with modems. 1) There is a bug in some versions of the xenix where the ttys file gets an incorrect character telling it what the baud rate is. the ttys line for 2400 will look like: 1qtty6 when if fact it should look like 16tty6 Note there are also two recommended wiring diagrams for altos 586 connected to modems. Type 1 modem (async) Altos modem 25db 25db 1 - 1 2 <<- 3 3 ->> 2 4 <<- 8 5 ->> 4 6 ->> 20 7 - 7 8 -----+ 5 not used | 20 <<-+ 6 not used ---------------------------- ---------------------------- Type 3 nullmodem Altos modem 25db 25db 1 - 1 2 <<- 3 3 ->> 2 4-<<---+ +->>--4 | | 5------+ +-----5 6 ->> 20 7 - 7 20 <<- 6 I never really had much luck with the /etc/modem command. If it is only you dialing in, you might consider setting it up as standard /etc/getty and Note you might need a little shell file to disable /dev/tty6 and then enable /dev/tty6 in case you lock up the port. 2) the other problem was that with *SOME* modems, the modem would start answer not give carrier and then immediately hang up the line. After many frustrating nights I found the following was happening. Altos recommends that you set dip switch 3 on a US ROBOTICS 12/2400 down. What I found was the modem was sending the word 'RING' to the computer, the computer was then responding with login or passwd and the modem would hang up. I found if I set the dip switch up this did not happen. Dip switch three on the US ROB is result code display up is quiet, down is result codes ******* DON'T FLAME ME HERE FOR APPARENT STUPIDITY, IN THE OFFICAIL *ALTOS* SETUP MANUAL ON MODEMS, IT CLEARLY STATES SET DIP 3 DOWN ****************** -- ======================================================================== Rick Tucker | ^^ T W I N P E A K S ^^ rickt%indcon@wybbs.mi.org | "The owls are not what they seem." uunet!4gen!indcon!rickt | quote from the giant.