| >I have a Dell 4550 2.4 Gh P4 PC designed for use with Windows XP. Windows XP
| >SP2 is doing just fine including both installed modems.
[quoted text clipped - 70 lines]
|
| - Franc Zabkar
>Thanks Franc,
>
>I have been suspecting a problem with the Conexant driver entries. Conexant
>has a program that is supposed to remove the old driver; but, it also
>installs a different driver.
I don't understand. If you physically remove the Conexant modem, and
then run the uninstall utility, why would a new driver be installed?
> That hasn't helped. I originally installed
>Conexant drivers from my Dell drivers CD. I think it was a WINME driver. The
>replacement I tried to load was a generic HSF one for WIN98 from Conexant.
>I have, when playing with the Conexant on WIN98, had mice show up in the
>control panel;modem window.
I'm at a loss to explain this. Perhaps it has something to do with the
fact that softmodems install their own serial port driver, and some
mice are serial devices?
> It seems to really confuse the issue. I have
>been removing the Conexant physically as well as in device manager when
>testing with the Intel.
>
>Don't know that it matters; but, the Conexant is HSF and the Intel appears
>to be HCF.
HCF is Conexant's terminology for its controllerless modem line.
Intel's controllerless modems are referred to as HaM, ie Host
Accelerated Modem.
> I ran a utility from Conexant that identified the chips. I bought
>the Intel modem on Ebay and the seller disappeared. It is from a firm in
[quoted text clipped - 15 lines]
>
>Tom
I haven't had much to do with XP, but IIRC many entries are similar.
The key name may be different, though. I would use regedit to search
for appropriate text strings and export any relevant registry keys to
a text file. You can then analyse the data with a text editor.
- Franc Zabkar

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Don Phillipson - 29 Sep 2004 22:18 GMT
> HCF is Conexant's terminology for its controllerless modem line.
> Intel's controllerless modems are referred to as HaM, ie Host
> Accelerated Modem.
This is directly helpful.
But what is an HSF Modem ?
-- under which my new modem identifies
itself as AOpen PCI Modem Enumerator
(and separately in / Device Manager
as AOpen FM56 SLM which is what is
printed on its card . . . )
This is an old unit, swapped for an FM56 PLC
(Controllerless) which simply never behaved
right.
Is there a reliable web site that
answers these sort of questions e.g.
defines TAPI. (Agenda: try to get WinFax.v.8
to recognize this modem. The instal routine
tests the modem as OK, then asks my selection
of items from a blank menu. Is TAPI a feature of
controllerless modems that the SLM simply lacks?)

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Don Phillipson
Carlsbad Springs
(Ottawa, Canada)
SFB - KB3MM - 30 Sep 2004 00:33 GMT
What is your processor speed ?
TAPI is the MS Telephony API.
Take a look at:
http://www.modemsite.com/56k/soft56.asp
> > HCF is Conexant's terminology for its controllerless modem line.
> > Intel's controllerless modems are referred to as HaM, ie Host
[quoted text clipped - 18 lines]
> of items from a blank menu. Is TAPI a feature of
> controllerless modems that the SLM simply lacks?)
Franc Zabkar - 30 Sep 2004 08:10 GMT
>> HCF is Conexant's terminology for its controllerless modem line.
>> Intel's controllerless modems are referred to as HaM, ie Host
>> Accelerated Modem.
>
>This is directly helpful.
>But what is an HSF Modem ?
HSF is Conexant's terminology for its softmodem line. My understanding
of the different chipset designs is as follows.
There are three types of internal modem, "soft", controllerless, and
"hard" (controller based). Softmodems have a DAA (telephone line
interface), controllerless modems have a DAA and DSP (digital signal
processor), and "hard" modems have a DAA, DSP, and controller.
Among other things, a modem's controller handles AT command parsing,
UART emulation, data compression and error correction. These functions
do not impact significantly on the host CPU. OTOH, the functions of a
DSP are highly CPU intensive, so a softmodem (which emulates the DSP
in software) may impact noticeably on CPU performance.
Examples of softmodem chipsets are PCtel HSP, Motorola SM56,
Smartlink, and Conexant HSF. Controllerless examples include Conexant
HCF, Intel HaM, Lucent Win Modem, and USR Winmodem.
- Franc Zabkar

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