Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!wuarchive!brutus.cs.uiuc.edu!ux1.cso.uiuc.edu!ux1.cso.uiuc.edu!uxa.cso.uiuc.edu!jpd00964 From: jpd00964@uxa.cso.uiuc.edu Newsgroups: comp.sys.next Subject: NeXT and MoDEMs Message-ID: <246300082@uxa.cso.uiuc.edu> Date: 5 Jan 90 10:38:29 GMT Lines: 96 Nf-ID: #N:uxa.cso.uiuc.edu:246300082:000:3397 Nf-From: uxa.cso.uiuc.edu!jpd00964 Jan 4 16:17:00 1990 This has bounced several times, so I am posting it here. >From @x400.hscs.umn.edu:ALEGREJ@UMNHSNVE Tue Jan 2 13:02:29 1990 Received: from nve.hscs.umn.edu by uxa.cso.uiuc.edu with SMTP (5.61+/IDA-1.2.8) id AA24637; Tue, 2 Jan 90 13:02:24 -0600 Message-Id: <9001021902.AA24637@uxa.cso.uiuc.edu> Received: from US*ATTMAIL*HSCS by x400.hscs.umn.edu via QTFS with X.400; Tue, 2 Jan 90 13:03:28 -0600 Date: 02 JAN 90 13:01:47 From: "ALEGREJ" Subject: Modems and NeXT To: Status: R >I am writing to you because in a previous Net thread you had some >input on getting a NeXT cube going with a modem. I am having the >greatest problem with this. I'll try to be helpful, but no gaurentees. >I am trying to hook the cube's serial B port to a Ventel Pathfinder >19200 baud modem. (Same as Telebit Trailblazer). The port on >the modem is 25 pin RS 232. I want to be able to use it with >"tip" and "uucp". So far no luck what so ever. I am using a Mac >round 8 to RS 232 modem cable. I know that there is a difference >between the serial A and serial B ports with respect to power on >pin 7, but, according to the diagram on page 83 of "The NeXT Book" >pin 7 is not used in modem cables. Also using this cable with the >serial A port does not let me dial out either. > There are a variety of possible problems already. 1> The Telebit modem, I beleive, has a weird wiring diagram and is an evil creature. From my microphone manual, I get this diagram. mini-din-8 Telebit 1 4 & 20 2 5 3 2 4&8 7 6 nothing 7 nothing 8&4 7 This is necessary because of the hardware handshaking, but only applies to a macintosh. 2> Your modem needs to be talked to at 192KBaud. Speaking at any other speed will not work. (I had this problem myself). You will most likely need to start out by inserting an entry for a19200. There are entries for a9600, so just copy those. This should allow you to type tip a19200 to connect to the modem. Then you can try standard hayes commands. If this works, then the cable is fine, you just need to create a dial19200 entry. Copy the dial1200 and change br#1200 to br#19200. 3> It is quite possible that the cube is unable to handle 19200 baud. I know that ioctl standards only go up to 9600 baud. There may be problems going higher. At least that's what the man pages say. There are External A and External B, but I don't know what they mean. It is possible that you can use these to go higher. Definately put the cable on serial port a. Otherwise you will have a lot to change, and it is not worth it. >I am not sure if it is the cable, a incorrect configuration of some >UNIX file, or the Ventel modem register settings (which are a world >onto themselves). The Ventel will give register dumps both in full >duplex or half duplex mode but I am not getting any response from the >modem, so I donUt think I am getting out of the cube. Can you attempt to run the modem off a macintosh? That might give some clue to the problem. >Any help you could give would be greatly appreciated. >Thank you in advance. > >John N Alegre >University of Minnesota >Andante Systems Michael Rutman SoftMed P.S. Please let me know what happens. I'm very interested in this. P.P.S. Sorry I could not E-Mail to you, but I cannot find a path to you from my machine.