On Mon, Jul 10, 2000 at 11:14:52AM -0400, John Aldrich wrote:
> On Mon, 10 Jul 2000, Ward William E PHDN wrote:
> > <CAVEAT ADDED> Ditto on the SERIAL external modems... but I've yet to hear
> > of a USB external modem that isn't a Winmodem of some sort. Also, let's
> > keep our terms right... a Cable modem is a different beast entirely, and
> > I've never heard of an External Cable modem that was a Winmodem, either.
> > Although Internal Cable modems may/may not be </CAVEAT>
> I don't think they were referring to a "cable-modem" but a
> "serial-cable modem," as in one which requires a serial cable, rather
> than a cable-tv cable. :-)
I also think the comment about USB external modems being Winmodems
is dead wrong in the extreme. AFAIK, USB modems are all NON-Winmodems.
The fact that support for USB is rather iffy on Linux at the moment may
lend the impression that USB modems are not supported on Linux therefore
USB modems must be Winmodems. This is dead wrong. I've got 4 3-Com USR 56K
Voice/Fax/Data Pro modems in full operation on USB on Linux right now.
I also have 4 3-Com ISDN Pro TA Adapaters that also support USB. I found
that USB does not hold up under the load of multiple devices running at
128K plus without a lot of errors so the ISDN TA devices are running through
a Computone Multiport serial board with serial ports configured to 230,400.
I could, none the less, talk to the ISDN TA devices over USB and could even
run one of them without a lot of errors. The 4 56K analog modems are
all running flawlessly under Linux USB.
Now, some USB modems and some USB serial adapters are not
conforming to the ACM communications standard (the 3-Com devices are
all ACM compliant) so you can't use the acm module. There is also a
generic serial module and some specialized modules for other serial
devices. There are still a lot (like the D-Link serial adapter in their
multifunction hub) that is not supported under Linux at all. It doesn't
mean those devices are Win* devices. It just means they have proprietary
interfaces that are supported yet.
> John
Mike
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