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No modem can get a connetcion faster than 53k over a standard phone line.

Well, that's what the dialer said - connected at XX kbps, or speed: XX kbps. Now under XP the device manager reports that Conexant Systems SoftV92 Data Fax Modem uses the Microsoft driver. I don't remember whether or not I had a custom driver in Win98. Device manager reports that the Zoom V.92 PCI Voice Faxmodem uses a custom driver from Zoom, but in each list under driver details, I see MS modem.sys, and other common .dlls, and unique .dlls.

Anyone else have experience with a "Winmodem", or one without a DSP on board, under XP?

When I google your modem I get this:

20. Posted Oct 3, 2004, 2:18 PM ET by jd
modem issues (PCI HSF etc..) after SP2 installation

after SP2 installation XP fails to recognize your current modem driver and starts to recognize it as softv90 and installs the necessary driver. connection goes from the usual 52-56k down to 31.2-33 kbps.
I have resolved this issue by doing this:

1. control panel- phone and modem options
2. under modem tab click properties
3. Diagnostics- note the hardware ID value
and write it down
(e.g. PCI\VEN_14F1&DEV_2014&SUBSYS etc...)
4. now go to C:\windows\system32\inf
5. look for mdmcxsf2.inf
!!!IMPORTANT!!!- backup this file before doing anything in case u need to put
it back!!!
6. open with notepad
7. look for the value you noted it step 3
8. delete the line
9. save
10. go to control panel again- phone and modem options- modem- this time click REMOVE- yes
11. then click ADD-(DO NOT put a check mark on the lower field- then click NEXT
12. WINXP will now automatically choose the driver before SOFTV90 or the next closest driver matching ur hardware.
HOPE THIS HELPS to those concerned. good luck!

http://microsoft.weblogsinc.com/entry/3238014134623324/