[Gllug] Can't connect to the Internet.

[Jason Clifford]

On Mon, 28 Oct 2002, Dermot Moynihan wrote:

> >is the modem dialing out?
> 
> I don't think so.

OK, step by step then:

1. Are there any lights on the modem - even a power light?

At the very least I would expect one or two lights on a working modem that 
is turned on but not currently communicating with either a PC or a 
network.

If you have some lights on the modem check that the serial cable is 
securely connected to the modem and the PC.

If both of the above are true check which device your PC is configured to 
use for the modem.

Modern distros usually create a symbolic link from the real device file to 
/dev/modem. Run 'ls -al /dev/modem' to determine which real device is 
being used if this is the case.

If your modem is plugged into COM1 the real device is /dev/ttyS0
For COM2 the device is /dev/ttyS1.

As you've said you are using an external modem I don't expect that you 
have a COM3 (ttyS2) or COM4 (ttyS3).

Once you are sure that the modem is connected to the right port run 
minicom (as root) and set it up to use that port ie:-

su -
minicom -s
Select "Serial port setup" from the configuration menu
ensure that option A is set to the right device file.
ensure that option E is set to 8N1 and a suitable speed (for a 56K modem 
set it to 115200)
ensure that hardware flow control is on.
hit enter to return to the configuration menu

Select "Exit" from the menu - this should take you to the minicom term and 
initialise your modem.

Your modem should respond with an OK to prompt you.

If it does not:

1. Check the init string for your modem. Some modems require special init 
strings - see the documentation for your mode.

2. Check the cable between the PC and modem.

3. Check that you have not disabled the COM port in the BIOS.

Assuming that you do get an OK prompt:

type is ATDT [insert isp access number] ie:

ATDT 08456651575

Your modem should dial into your ISP. If it is configured to do so it will 
screach when it connects. After the connection is established you should 
recieve a "CONNECT n" from the other side indicating the connection speed.

If all of this works, disconnect and quit minicom.

Now you need to ensure that PPPD is properly configured. Mostly this is a 
matter of checking /etc/ppp/options (or /etc/ppp/peers/[isp name]/options)
or using KPPP or wvdial. See the documentation for help on these.

Jason Clifford
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