Re: [redhat] How can i setup my linmodem : Agere System PCI Soft Modem
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On Sat, 30 Sep 2006 23:33:47 -0000, "masood"
> Please tell me how can i setup my internal modem ,By throwing it away and getting a real modem.
What you have is *not* a modem, regardless of what the vendor will say
or what's written on the box or in the manual. It's a device known as a
A WinModem is basically a modem which has been stripped of its key
components. In actual fact, what you have is a crappy sound card with a
phone jack on it. The *Windows* drivers supplied with it get your main
processor to do the job that the other components, were they present,
should be doing. Remember that a couple of bucks saved on hardware
multiplied by the number of units sold means huge savings which easily
pay for the development of the Windows drivers.
Since this job includes real-time signal analysis, the process doing it
is time-critical. This adds an extra load on your processor, which
already has enough to do. The end result is a device which is only
usable in Windows, which is going to be much more sensitive to the
quality of your phone line and the audio signal being transmitted than
a hardware modem would be, and which can very easily bring the
operating system down in the event of a signal being particularly
difficult to analyse.
Some intrepid Linux device driver developers have managed to produce
Linux drivers for these devices (I refrain from calling them "modems"
because they're not doing any signal modulation/demodulation, the
system CPU is doing that) but they're working blindfolded.
Manufacturers don't generally disclose the technical specifications of
their devices, probably so that the public at large can't see how
crufty they are, so the Linux developers are relying on guesswork and
the limited official information they have. Reverse engineering of the
Windows drivers is forbidden, so they can't analyse what's already been
done and simply port it to Linux. See http://www.linmodems.org
I strongly advise you to pull this useless piece of trash out of your
computer and go and get a *real* modem which has all of its components
and which doesn't require any drivers to get the host computer to do
If it has to be an internal modem, make it an ISA card. Of course, make
sure your mobo has a free ISA slot (many recent mobos only have PCI and
AGP slots). If external, get a serial connection modem because USB
modems are more often than not Winmodems too.
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