Linuxant Linux drivers for Conexant chipsets - Introduction      
company drivers
ALSA (audio) driver
ALSA (ppch) driver
HSF (softmodem) driver
DGC (modem) driver
HCF (modem) driver
RIPTIDE (audio) driver


NOTE: As dial-up modems are now mostly obsolete, these drivers are no longer being actively developed. The OEM version of the HSF driver which does not require any license key is now available for your convenience.

Our goal is to broaden and improve supported Linux technologies by making complete, high-quality drivers for Conexant chipsets available to the Linux community.

Due to intellectual-property/patent issues beyond our control, the source code of some components like modem modulations cannot be released; however, we have attempted to reduce the inconvenience of binary-only modules by separating the proprietary code from the operating-system specific code. The latter is provided in source form, allowing users to install the drivers under any supported version of the Linux kernel.

Is my device supported? Which driver(s) do I need?

Our generic Linux drivers for most Conexant HCF, HSF and DGC chipsets support as many configurations and features as possible. However due to the large number of modem and computer system manufacturers using Conexant chipsets in custom products, there are no guarantees that generic drivers will provide the same functionality as the original driver software or even work with your modem (please see the license/legal disclaimer). Despite this, we have many happy users!

To choose the appropriate driver(s), you must first identify your modem chipset.

News & Announcements

Feb-07-2006 Linuxant releases enhanced HSF driver with Intel High Definition Audio (HDA) bus support!

Dec-14-2004 Linuxant adds ATI, SIS, x86_64 support in new improved version of HSF driver!

Jul-30-2004 Linuxant adds USB support to HSF driver!

Sep-08-2003 Linuxant releases significantly enhanced Conexant HCF and HSF modem drivers!


  • V.92 support in full version (new for HSF)
  • Class 1.0 FAX support in full version (new for HSF), compatible with HylaFAX, efax-gtk, and efax
  • Digital Call Progress for HSF (playing the modem dialing sound through the Linux audio system)
  • Implementation of Conexant's SDK2K (for upcoming Modem On Hold)
  • Better hardware support, including latest Conexant devices
  • Multiple device instances (several modems can now be simultaneously used)
  • Linux 2.6 kernel compatibility
  • Improved SMP and preemptible kernel support
  • Prebuilt RPM packages for the latest Mandrake/RedHat/SuSE kernels
  • Debian packages (in our Download section)
  • Many bug fixes

    We strongly recommend that all users upgrade to the latest version. Linux 2.2 kernels are no longer supported. Please switch to 2.4 or later.

    Because the scope of this project has grown beyond the capacity of a single volunteer and legal issues prevent us from using a classic open-source development model, the HCF and HSF drivers are now available in two editions:

  • a free version (limited to 14.4Kbps data), available at no cost. Please use it to test if your hardware is compatible.
  • a full version (with 56K and FAX), available for a modest price.

    The DGC driver is available at no charge. Proceeds will be used to further improve the drivers. Getting the full version is the best way to encourage us and ensure that this project continues.

    If you are wondering why a Linux driver isn't already included in the price you paid for your modem, or disagree with the practice of selling Linux software, please read this explanation.

    Thank you for your support!

    Apr-16-2003 Linuxant enters groundbreaking agreement with Conexant to make enhanced drivers available to the Linux community



  • Copyright © 2003-2008 Linuxant inc. All rights reserved.
    Linuxant™ and DriverLoader™ are trademarks of Linuxant inc.
    Linux is a trademark of Linus Torvalds in the US and some other countries.
    Conexant™ and some product names are trademarks of Conexant Systems Inc.
    Other trademarks belong to their respective owners.