Re: What's an X2 modem?
On 13 Nov 2002, 09:53:36, andrej hocevar wrote:
> recently, someone's gave me an older internal USR V.90 modem,
> supposed to work at 56k. However, all I got were speeds at about
> 33k. That was when I noticed the modem uses some X2 technology.
>
> Can I make such a modem useful? I've read some sites saying it
> depends on the ISP -- so does it mean mine doesn't support it or are
> X2 modems simply out of fashion? Is there any software I lack to
> make full use of the modem?
X2 was USR's proprietary implementation of "56K" modem technology. The 56KFlex
standard was a competing, open, non-proprietary alternative that trailed
X2 in deployment, but the resultant v.90 standard was much closer to the
56KFlex implementation than X2.
USR would let any modem maker license X2 for their end-user modems very cheaply,
but charged outrageous fees for the Access Server (what sits at the ISP
and answers modem phone calls) license. It was their way of driving sales
of their Total Control line of rack-mount modem-banks . . . .
At any rate, it's gone the way of the dinosaur. The chance of finding an
ISP that still uses access server products that support X2 is quite low .
. . .
Hopefully, you can get a flash or firmware update to v.90.
madmac
>
> thanks,
> andrej
>
--
Doug MacFarlane
madmac@covad.net
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