[comp.sys.next] Info on Modems?

barry@zaphod.uchicago.edu (Barry Merriman) (09/12/89)

-
Does anyone have experience hooking a modem up for the Cube?
Any info on procedures, brands, who to ask, etc is greatly appreciated.

-Barry Merriman

jpd00964@uxa.cso.uiuc.edu (09/16/89)

/* Written  3:54 pm  Sep 11, 1989 by barry@zaphod.uchicago.edu in uxa.cso.uiuc.edu:comp.sys.next */
/* ---------- "Info on Modems?" ---------- */
-
>Does anyone have experience hooking a modem up for the Cube?
>Any info on procedures, brands, who to ask, etc is greatly appreciated.
>
>-Barry Merriman
/* End of text from uxa.cso.uiuc.edu:comp.sys.next */

Yes, we have had much bad experience.  Basically, you first need to make a
cable yourself.  DO NOT USE AN RS-232 TO MINI-DIN-8 MADE FOR A MACINTOSH.  It
may appear to work, but that was our deadfall.  The correct wiring is found in
the on-line dox somewhere.

Second, edit /etc/ttys and turn on the port you hooked up your modem to.  
Your terminal type will depend upon the speed modem you get.  You should
look into your termcap file for the different types, and choose the appropriate
one.  This will allow your modem to autoanswer for you.  

Third, read all you can about tip that you can find.  This will allow you to
dial out.  

Good luck, our modem is still not working consistantly.

Michael Rutman
Softmed

phd_ivo@gsbacd.uchicago.edu (09/18/89)

>Yes, we have had much bad experience.  Basically, you first need to make a
>cable yourself.  DO NOT USE AN RS-232 TO MINI-DIN-8 MADE FOR A MACINTOSH.  It
>may appear to work, but that was our deadfall.  The correct wiring is found in
>the on-line dox somewhere.

Well, it certainly worked quite well for me. I just dialed out (from a personal
cube to a mainframe), though. Every once in a while the line dropped characters.
This was indicated on the console. It wasn't very serious, nor did it get
worse when I changed from a 2400 baud modem to a 19200baud data switch.

>Third, read all you can about tip that you can find.  This will allow you to
>dial out.  

Actually, the latest (free) distribution of Kermit is set up so that it compiles
wonderfully on the NeXT. I always had a tough time with tip, but Kermit worked
 beautifully right from start. Even more significantly, it allows you to transfer
files to and from the NeXT, binary as well as text. Kermit is available on
watsun.cc.columbia.edu, or maybe even at cunixc.cc.columbia.edu.

/ivo	(phd_ivo@gsbacd.uchicago.edu)
	iwelch@agsm.ucla.edu

kaplan@m.cs.uiuc.edu (09/19/89)

The crucial thing seems to be the *portname* you use when
tipping/kermitting/whatever. I initially used /dev/ttyda, as implied by the
docs, and got nowhere.  On a random guess I tried /dev/ttya, and voila!, no
problems since.

(This is with a mac modem cable)

Simon Kaplan

dennis@yang.cpac.washington.edu (Dennis Gentry) (09/19/89)

In article <246300053@uxa.cso.uiuc.edu> jpd00964@uxa.cso.uiuc.edu writes:

   From: jpd00964@uxa.cso.uiuc.edu
   Newsgroups: comp.sys.next
   Date: 15 Sep 89 22:56:00 GMT
   References: <5358@tank.uchicago.edu>

   /* Written  3:54 pm  Sep 11, 1989 by barry@zaphod.uchicago.edu in uxa.cso.uiuc.edu:comp.sys.next */
   /* ---------- "Info on Modems?" ---------- */
   -
   >Does anyone have experience hooking a modem up for the Cube?
   >Any info on procedures, brands, who to ask, etc is greatly appreciated.
   >
   >-Barry Merriman
   /* End of text from uxa.cso.uiuc.edu:comp.sys.next */

   Yes, we have had much bad experience.  Basically, you first
   need to make a cable yourself.  DO NOT USE AN RS-232 TO
   MINI-DIN-8 MADE FOR A MACINTOSH.  It may appear to work, but
   that was our deadfall.  The correct wiring is found in the
   on-line dox somewhere.

It depends on which port you use.  According to my
documentation, Serial Port A is identical to a Macintosh serial
port, and a standard cable should work fine.  Serial Port B has
+5v on pin 7(?), so it will indeed not work with a standard
modem and mac cable.  The rest of the original answer appears to
be correct.

phd_ivo@gsbacd.uchicago.edu (09/20/89)

Actually, I think some of my on-line documentation somewhere recommended
/dev/cua. This also works as a proper device for dialing out.

/ivo

jpd00964@uxa.cso.uiuc.edu (09/21/89)

Let me repeat myself.
A standard Mac cable will appear to work, but CAN still cause problems.
This is an official from the NeXT regional manager up in Chicago, so I
have no reason to doubt it.  

The problem appears when you want to both dial out and dial in to the same
modem.  If you do not do both, then there will be no problem with a standard
mac to db-25.  

It is not because the ports are different, they are not really, its because
the wiring needs to go to a different pin on the db-25.  The documentation
is located UserNotes/SysAdmin/SerialPorts.wn.  You can check out their 
wiring diagram and compare it to that found from Apple.  There is a difference.

Michael Rutman
Softmed