Conexant doesn't make modems, they make chipsets and sell them to modem manufacturers/motherboard makers.
Don't you think it would be important to include something besides a chipset number?
--> Modem Help Guide <--
<--- Please read!
It might aid someone trying to help you if your post contained some details like:
Is this device integrated on the motherboard or a separate add-on PCI card (as stated)?
Did it come pre-installed in your computer at the time of purchase?
Used in a laptop or desktop computer?
Computer/motherboard brand and model?
Did it come from the factory with Windows 7 installed?
With only the vague info you provided, all I can suggest is to visit our Advanced Driver Search Wizard
to see if anyone has uploaded a driver for any modem containing this chipset. Or if you care to provide some details of your hardware/computer/motherboard, we will attempt to find this driver.