[K12OSN] SME comm problem

Tom Brown tbrown at michiana.org
Tue May 4 03:00:48 UTC 2004

At 05:28 PM 5/3/04 -0500, you wrote:
>On Mon, 2004-05-03 at 16:55, Tom Brown wrote:
> > Since we are discussing SME, can I get help with a serial modem problem?
> >
> > I have two test boxes, both Pentium 2 vintage. I've installed SME 5.0, 5.6
> > and 6.0.1, and none of them will recognize an external serial modem. I 
> have
> > tested with two known good modem (Sportster and Zoom) and cable sets. I
> > currently have the Sportster installed. I use minicom to test the line.
> > Never do the modem LEDs change from CS to any other condition.
>You aren't getting as far as talking to the modem. When you open
>the line with minicom, kermit, the dialer, or whatever, the modem's
>TR (or DTR) led should come on.  Are you sure the serial port is enabled
>in bios and that the kernel finds it?   If you do:
>dmesg |less
>and look for the Serial driver initialization, does it mention ttyS00
>and an interrupt it will use?  Is that the device you are using

The server is definitely not communicating with the modem.

I am using ttyS01 (com2/irq3). I have SME 5.0 loaded at the moment since it 
has the Mitel modem test utility. The test fails of course.

The Award BIOS shows two ports enabled:
. serial port 1 - 3F8/irq4
. serial port 2 - 2F8/irq3

dmesg shows:
. Serial driver version 4.27 with MANY_PORTS MULTIPORT SHARE_IRQ enabled
. ttys00 at 0x03F8 (irq = 4) is a 16550A
. ttys01 at 0x02F8 (irq = 3) is a 16550A

The 16550A UART should run at 115K with no problem, but I have it set lower 
in Minicom. SME set speed at 115K in /etc/diald.conf.


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