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Old 07-11-2001, 01:35 PM   #1
Paul_Lee
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Registered: Jul 2001
Location: Cambridgeshire, England
Distribution: Ubuntu 13.10
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Question Can you help with my modem problem?


Hi all,
Another mighty query, this time concerning modems. I have a HSP56 MicroModem (of PCtel origin) installed in my PC, and it
is proving to be a bit of rotter (!) to setup. I know from reading the various FAQs that you can coerce it to work under Linux, but the websites didn't tell me just how difficult it would be.

I have installed drivers, which I am trying to get to work. The next problem is using setserial:
my syntax is
setserial /dev/ttyS2 uart 16550A irq 9
however, the I/O port address seems to be questionable. According to WinME (yuk), it says that this lies in the range DC00-DC3F, which seem a bit high compared with other values mentioned in,say, the SuSE linux manual.
Should I specify
setserial /dev/ttyS2 uart 16550A irq 9 0xDC00 ?
(assuming that the port address is octal - does anyone know of a way in Windoze rather than going via the Start->Settings->Control Panel->System route to verify this address.

Thanks for your help

Paul
 
Old 07-12-2001, 09:57 AM   #2
unmadindu
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Registered: Jun 2001
Location: India
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Talking

well u mprobably have a winmodem (check out http://www.idir.net/~gromitkc/winmodem.html)
u need to download the latest driver from http://www.medres.ch/~jstifter/linux/pctel.html
and follow the instructions to install them
u do not need to do these set-serial stuff
cheers
sayamindu
 
Old 07-12-2001, 10:41 AM   #3
Paul_Lee
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Question

Thanks, but I have done all that

Its all OK until I get to
insmod pctel
and insmod ptserial

at which point Linux grumbles about a kernel mismatch, saying that the modules were compiled using the 2.4.4 Kernel, but
SuSE uses 2.4.4-4GB, and it won't allow me to install them.

The website you mention discusses the use of a fixscript routine to correct this error, but even this doesn't allow me to install.
It is then that the FAQ mentions "recompiling the kernel" ... and my heart sank

Cheers

Paul
 
Old 07-12-2001, 12:04 PM   #4
unmadindu
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Cool

well,
recompiling the kernel is not a terribly difficult task (i did it within a week of my first succesful linux installation) ;-)
just refer to the kernel-howto o
for more info on ur types of modem refer to www.linmodems.org (or u can become a member too)
u can also use the -f option for the insmod command (ie, insmod -f pctel.o)
and remember, u will find the modem at /dev/ttyS15
and it is usually linked to /dev/modem
cheers
sayamindu
 
Old 07-12-2001, 12:44 PM   #5
Paul_Lee
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Unhappy

Hi unmandindu,

I just get worried about fiddling about the Kernel. The last
one I recompiled years ago left me with an unusable system.
Bloody RedShat 5.1 !

I've tried the -f flag in insmod, and no luck with that either.
(By the way, my modem, my modem is on COM3, /dev/ttyS2).

Thanks for your help,

Paul
 
Old 07-13-2001, 09:05 AM   #6
unmadindu
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Cool

no that's in dos (the port)
the driver makes it in /dev/ttyS15 in linux
also did u compile the drivers?
cheers,
sayamindu
 
Old 07-13-2001, 12:08 PM   #7
Paul_Lee
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Hi,

Yes I did re-compile the drivers.

I thought that /dev/ttyS2 = COM3 ?

Or am I mistaken? Anyone else care to comment - I'm confused!

Cheers

Paul
 
Old 07-16-2001, 10:29 PM   #8
unmadindu
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Lightbulb


firstly, every modem requires a serial port to function
well, as this is an internal modem (connected to a pci or a isa slot), it has to emulate a serial port
now in dos, the driver makes the modem emulate com 3/com 4
but these serial ports usually have conflicts and hence in linux the drivers make the modem emulate com 14 (/dev/ttyS15)
this /dev/ttyS15 is also symlinked to /dev/modem

i hope that clears matters up
cheers
sayamindu
 
Old 07-17-2001, 08:49 AM   #9
trickykid
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Registered: Jan 2001
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Paul_Lee,

You are correct, I have never heard of ttyS15 and using it in configuring a modem.

If your modem is a hardware modem and you can set the com and irq manually on the board..

Try this, if you know there are no irq conflicts or the such.

Code:
# setserial /dev/ttyS2 irq 9
( I usually don't put the i/o address in the setserial command, it seems to work most of the time without declaring that in the command )

I have my own modem set on com3 or ttyS2, and irq 9. Linux doesn't detect or did not detect it so that is the command to get it to recognize my modem and go from there. Then I put the setserial in my startup files so I wouldn't have to do that everytime.

Hope this helps.
 
Old 07-17-2001, 12:26 PM   #10
unmadindu
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Exclamation

well tis modem *is* a winmodem (the word hsp :- host signal processing makes it obvious) and and i have a modem with the same chipset and minicom, mgetty detects it on /dev/ttyS15
the modem driver is configured like that
 
Old 07-20-2001, 05:02 PM   #11
landonmkelsey
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Registered: Jul 2001
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compatible modems

http://www.idir.net/~gromitkc/winmodem.html

no problem with US Robotics 3CP5610

configure with KDE KPPP

 
Old 07-21-2001, 12:58 AM   #12
unmadindu
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Post

the modem under discussion is a pctel modem and not a us robotics one

 
Old 07-21-2001, 01:50 AM   #13
isajera
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Registered: Jun 2001
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i always hate to tell people to give up, but the winmodem battle is not one that linux users tend to walk away from.

i take it for granted that you've been over www.linmodems.org time and time again, you tried every serial port available, and mixed and matched every setting you could find until your fingers bled, leaving the red marks on the keyboard as the only token of your struggle.

remember, there ARE linux compatible modems out there. i know from experience that you tend to doubt that after a while. sometimes you just have to accept that the square peg won't fit in the round hole.
 
  


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