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Old 02-07-2005, 08:23 PM   #16
LQ Newbie
Registered: Jan 2005
Location: Sao Paulo - BR
Posts: 8

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Hello Thorn,

I┤ve just made a Search about your problem with your 3ComWinmodem.

Take a look at this small HowTo, it┤s in portuguese but if you have problems in translating let me Know, I can Help you.

Below is the Translation. (Sorry about my mistakes)

Bye Bye,


#How to Install a Linux Winmodem (read this all first).

This problem happens many gnu/linux newbes.
This problem began just when 3com had the terrible IDEA to begin manufactoring Winmodems!!!

This little Howto explains step-by-step how to install this "boring" modem!

Tested in:
-Conectiva GNU/Linux (possibly works in RedHat).
-U.S Robotics 56k voice int(This method may work on Lucent).


1 - Create aserial port (non standard)

[root@localhost /]# cd /dev
[root@localhost /dev]# ./MAKEDEV ttyS6 (ttySx anyone upper than 3)

2 - Modem address???

[root@localhost]# cat /proc/pci

Look for:

Bus 0, device 11, function 0:
Serial controller: US Robotics/3Com 56K FaxModem Model 5610(ou Unknown vendor Unknown device)(rev 1).
IRQ 9.I/O at 0xdff0 [0xdff7].

Now look for IRQ:
IRQ: 9(o seu) e I/O 0xdc00[0xdc01]
Write down these data (IRQ e I/O)

3 - Change data using setserial

[root@localhost /dev]# setserial /dev/ttyS6 port (seu enderešo I/O) irq (seu numero de irq) uart 16550a

[root@localhost /dev]# setserial /dev/ttyS6 port 0xdc00 irq 9 uart 16550a

4 - For U.S Robotics modems

look for this package and make the download:

5 - Installing package (RPM):

Atention: If the downloaded file is in /root, ok!

[root@localhost /]#cd /root
[root@localhost]# cp /root/3c2977-0.1-1cl.noarch.rpm /tmp
[root@localhost]# cd /tmp
[root@localhost /tmp]# rpm -ivh 3c2977-0.1-1cl.noarch.rpm

This Package will create a service with the following name:

Now do the following:

[root@localhost]# cds
[root@localhost]# ./3c2977.init start
[root@localhost]# kwrite /etc/rc.d/rc.local

Write down the following line at the end of the file:
3c2977.init start

Now your modem must be working. If not, try to locate the correct name of the package for your modem.

On doubts post the forum (!


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