Wed, Jun 13, 2007 at 11:21:35AM +0200, Raimo Niskanen may have written:
> Hi all!

quoted text
>

> I have an old laptop on whith I want to use ppp

> to connect to Internet, using a PCMCIA modem

> 3Com 3CXM756 "Global GSM & Cellular Modem PC Card"

>

> First, I _think_ it shows up as /dev/cua03. In

> dmsg it pops up as device pccom3, and when trying

> with tip it appears that while the card is in

> it fails as described below, while the card is

> out it fails with "device not configured".

>

> Nevertheless. ppp, minicom and tip all try to

> send AT commands but get no responses, as

> it appears. I do not see any logs, almost.

> ppp says it does ATZ^M and waits for OK

> which does not happen. minicom and tip

> try to dial and say it fails.

>

> Have you got any tip on how to troubleshoot this

> card, or does anyone know this card is a dead end

> and can name a proper serial line, USB or PCMCIA

> modem that is known to work?

I don't know anything about that 3Com card.  If you can't get it working,

I do know that the following two (fairly old) PCMCIA modems work well for

me with OpenBSD in a couple of laptops that I use:
- "Megahertz by USRobotics" model XJ4288
- IBM 56K PC Card Modem (FRU 02K4249)
--

"Perfection [in design] is achieved not when there is nothing left to add,

but rather when there is nothing left to take away."

				-- Antoine de Saint-Exupery