tos@psc90.UUCP (Tom Schlesinger) (11/28/89)
Perhaps someone can puzzle out my problem with com ports. The machine is an IBM PS2/30-286, i.e. the "late model or afterthought AT." I've been using the Procomm pkge, and for all but one function quite successfully. The function is the HOST MODE, by which I can reach the machine from the office (it's at home). I can only get the HOST MODE to work at 300 baud. When I try 1200, I carefully set the line speed both on the machine here at home, and then on the terminal at the office to 1200, with requisite bits,parity, checkbit. The modem connects quite normally, but the clue that there is a speed problem, is that when the modem from home connects, it does not respond with a CONNECT 1200, but only with a plain CONNECT, even when I've set things up for 1200! Someone from the campus told me to check the ports. I ran ISCOM to ask my machine what ports it's using, and it's "com1" and the others are supposedly not used. On his instructions, I've used the MODE command to adjust the speed on that port, in case Procomm is not doing that... it made no difference. Now here is the weird catch: On the line settings in Procomm, I'm set up as if I were using Port2, i.e. Com2. That's always been the case... it's the only way I've ever gotten it to work. When I change it to Com1, I can't even reach my own modem!. And, I've also tried switching ports in the back of the modem, by plugging the phone line in the other female plu and changing the slidw switch to the other position. Then too, nothing works, i.e. I can't even reach the line that way or properly contact the modem. What's the hidden catch here? How do "ports" work, anyhow? I'll appreciate any clues or assistance whatever.
cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) (12/01/89)
I have had various parts of your problems in the past. I had an ATI
2400 etc (2400 baud with MNP levels 1-5) at work this summer. I set it
up with Procomm Plus in host mode and tried calling it from home at 2400
and 1200 baud with and without MNP. I don't recall exactly what happened,
but in every case I managed to connect but everything that was transmitted
was garbage.
Also, the modem I used to use at home was secondhand and didn't have
documentation, so I didn't have the switches set correctly on it. From
DOS, it was COM1:; from Procomm, I had to set the port address and
interrupt number to be equal to those for COM2:! This doesn't make any
sense, as the two things that determine how you access the modem are
its interrupt number and port address, so if they were set for the
COM2: specifications, it should haev been COM2:!
--
Stephen M. Dunn cs4g6ag@maccs.dcss.mcmaster.ca
<std_disclaimer.h> = "\nI'm only an undergraduate!!!\n";
****************************************************************************
They say the best in life is free // but if you don't pay then you don't eatpoffen@chomolungma (Russ Poffenberger) (12/01/89)
In article <1076@psc90.UUCP> tos@psc90.UUCP (Tom Schlesinger) writes: > >Perhaps someone can puzzle out my problem with com ports. The machine is an >IBM PS2/30-286, i.e. the "late model or afterthought AT." I've been using the >Procomm pkge, and for all but one function quite successfully. The function is >the HOST MODE, by which I can reach the machine from the office (it's at home). >I can only get the HOST MODE to work at 300 baud. When I try 1200, I carefully >set the line speed both on the machine here at home, and then on the terminal >at the office to 1200, with requisite bits,parity, checkbit. The modem >connects quite normally, but the clue that there is a speed problem, is that >when the modem from home connects, it does not respond with a CONNECT 1200, but >only with a plain CONNECT, even when I've set things up for 1200! >Someone from the campus told me to check the ports. I ran ISCOM to ask my >machine what ports it's using, and it's "com1" and the others are supposedly >not used. On his instructions, I've used the MODE command to adjust the speed >on that port, in case Procomm is not doing that... it made no difference. > Now here is the weird catch: On the line settings in Procomm, I'm set up as >if I were using Port2, i.e. Com2. That's always been the case... it's the only >way I've ever gotten it to work. When I change it to Com1, I can't even reach >my own modem!. And, I've also tried switching ports in the back of the modem, >by plugging the phone line in the other female plu and changing the slidw >switch to the other position. Then too, nothing works, i.e. I can't even reach >the line that way or properly contact the modem. > What's the hidden catch here? How do "ports" work, anyhow? > I'll appreciate any clues or assistance whatever. Are you sure that the modem you are dialing out from at work is set to 1200? Most 1200 baud and up modems, when answering will try at different speeds until they match. Russ Poffenberger DOMAIN: poffen@sj.ate.slb.com Schlumberger Technologies UUCP: {uunet,decwrl,amdahl}!sjsca4!poffen 1601 Technology Drive CIS: 72401,276 San Jose, Ca. 95110 (408)437-5254 ------------------------- In a dictatorship, people suffer without complaining. In a democracy, people complain without suffering.