| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 2941.1 | wrapped to <80 columns | TARKIN::LIN | Bill Lin | Tue Mar 04 1997 16:48 | 29 |
| <<< Note 2941.0 by CSC32::R_IVERS >>>
-< Need help with Scholar PLUS modem >-
I know you will all think it's crazy, but I am trying to connect a Scholar
PLUS modem to a PC running Window 95. The Scholar PLUS is free and I only
use it for about 5 minutes every month. I had it working at one time but
then reinstalled Windows 95 for unrelated reasons. Now the modem will not
work.
Here is whate I have:
H8571-J connector (PC end- 9pin)
DECconnect Office Cable
H8571-D connector (Modem end-25 pin)
The only thing I can get to talk to the modem at all is the modem
diagnostics under the control panel modem option.Nothing else will see the
modem at all. Someone suggested that maybe I have to have WIN95 PLUS. Is
that true. I did have it installed before(when it worked).
When I run the control panel diags, it gets some valid responses back from
AT commands, but not all(I think this nis normal for the limited Scholar
PLUS AT command set. I do have the modem in AT(Hayes) command mode.
Can someone tell me what I am doing wrong. This should be such a simple
thing to get going!
Rodney
|
| 2941.2 | You need a real Serial Cable | WONDER::CASABONA | | Tue Mar 04 1997 17:03 | 13 |
| The DecConnect will not cut it for the Modem. All this provides is
Tx, Rx and Gnd. It does not provide the Modem control signals needed for
the Scholar.
What you need is a real 9 pin to 25 pin cable or a 9-25 pin converter.
I bought the latter at RShak when I needed to connect the Pocket-Modem
to the serial port of a laptop.
CompUSA would probably be the source for a real 9 pin to 25 pin Serial cable.
regards,
Rick
|
| 2941.3 | But it did work just fine! | CSC32::R_IVERS | | Wed Mar 05 1997 09:30 | 4 |
| It did work just fine before though, so I have to beleive that it can work again. It worked before with the same
cable and connectors!
Rodney
|
| 2941.4 | Perhaps things have changed... | WONDER::CASABONA | | Wed Mar 05 1997 10:00 | 8 |
| I have provided you with the information based on my own experience.
Just a guess, but perhaps the current (new) drivers actually use the
modem control signals... which are not provided by the DecConnect
scenario.
Good luck,
r.
|
| 2941.5 | | CFSCTC::SMITH | Tom Smith MRO1-3/D12 dtn 297-4751 | Wed Mar 05 1997 11:09 | 9 |
| If you really want to try to make it work with an inadequate cable,
you'll at least need to configure everything to use XON/XOFF flow
control and "DSR always asserted". There may be other things I'm
forgetting, and I'm not sure how many of them you can easily do in
Win95 and in each application that uses the modem.
I have to believe that a $10 cable is a lot easier solution, though.
-Tom
|
| 2941.6 | Hi Rodney | SSDEVO::ASTOR | Subsystems Engineering Support | Wed Mar 05 1997 12:37 | 12 |
| Hi Rodney, and yes you are crazy! but we knew that :)
I think those guys at OEM parts off of Filmore here in the Springs have
the 9 pin to 25 pin adapters cheaper than radio shaft. Besides, it's
more fun to go down there and scrounge around. If you need a 25 pin modem
cable to connect to the adapter, I have one I'll bring in and donate it to
the cause. Also, I had an old non-AT command scholar hooked up this
way a few years ago and it worked OK.
Regards,
Kurt
|
| 2941.7 | Still doesn't work! | CSC32::R_IVERS | | Thu Mar 06 1997 01:05 | 10 |
| OK, I bought the cable at Radio Shack, 24pin to 9 pin RS232 cable. But,
it still doesn't work. I get intermittent activity on the modem(lights
flash etc) but it always just times out. I do have it in AT command
mode.
I have three Scholar modems that all act the same way, so I really
don't think it is the modem.
Any other ideas?
|
| 2941.8 | flow control at 2400? | SLOAN::HOM | | Thu Mar 06 1997 08:34 | 7 |
| re: .5,
I would question why any application needs flow control at 2400 baud
these days. I'm sure there are exception cases, but I suspect the
use for 2400 is for ascii transmission.
Gim
|
| 2941.9 | Try the fix used for VAXstation 3100s | NEWVAX::PAVLICEK | Upgrade your PC: Install Linux | Thu Mar 06 1997 09:02 | 17 |
| re: .7
Try looking in SOLVIT::MODEMS.
As I recall, you might need to move a jumper within the modem itself,
depending on whether or not the PC is using full modem control signals.
This was an issue back when people needed to use DECconnect cables to
attach Scholars to VS3100s. It may not be exactly the issue you have
here, but I'd try it anyway to see if it works. You need to open the
cover and change 1 or 2 jumpers and close it up. If you're moderately
handy with a screwdriver, it should take only a few minutes to do.
The instructions should be in SOLVIT::MODEMS somewhere; look at the
notes talking about problems with a Scholar & VS3100.
-- Russ
|