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HylaFAX 4.2.2 release

Revision as of 15:36, 22 December 2005 by Paul (talk | contribs)
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The HylaFAX development team is pleased to announce our 4.2.2 patch level release! As always, our sincerest thanks go to all who participate and provide feedback.

The source code for the 4.2.2 release can be downloaded from:

(md5: 356328a6289d0a26775f33d6bfb75368 1,438,894 bytes)

This document is intended to describe the significant differences between hylafax-4.2.2 and older releases, point out any known incompatibilites and issues, and provide the reader with directions to further resources regarding HylaFAX.


  • faxgetty can now utilize more than two call identification tags
  • color fax (JPEG) reception is now supported (requires updating libtiff and libjpeg)
  • FaxModify makes pre-processing outbound fax images on the server easier
  • numerous other enhancements and bugfixes (see CHANGES)


Please refer to HylaFAX Bugzilla for a detailed list of issues.


  • Some modem config files generated from earlier versions' config file prototypes may contain Class1TCFRecvHack. This is no longer desireable for production use, and this feature should now only be used for debugging purposes.
  • Some of the CallID changes in this release required some reordering of the command-line parameters with which the DynamicConfig scripts were called. If you use DynamicConfig check your scripts after upgrading.
  • TIFFs received prior to upgrading to this release will display their CIDName and CIDNumber information reversed (CallID2, CallID1) when examined with faxinfo.
  • libtiff-3.6.1 is fatally flawed when dealing with Group 3 images. Don't use it as-is. See:


  • For security reasons, everyone not yet using 4.2.1 should consider upgrading to this 4.2.2 release as soon as possible.
  • New improvements in 4.2.2 with unexpected signal handling should benefit most Class 1/1.0 users (with or without ECM enabled).
  • If using a modem with a newer Rockwell or Conexant chipset that indicates Class 1.0 support you may want to upgrade and re-run faxaddmodem to choose Class 1.0 in order to improve unexpected signal handling.
  • If you regularly send fax batches (new in 4.2.0) you should upgrade to get the fixes in 4.2.2.
  • If you wish to send multipage faxes with mixed page lengths you should upgrade (requires patching Ghostscript).


Binary packages for some operating systems and platforms are available. Please see and If you are able and willing to produce a binary package of HylaFAX for general distribution, then you are invited to join and solicit your binary package.


iFAX Solutions, Inc. ( provides commercial support to HylaFAX users. Single-incident and annual support options are available, as well as a variety of consulting services. Contact for more information.


HylaFAX has numerous support resources available. The user is encouraged to utilize the manpage documentation before turning to other support arenas. However, if other support is desired, or if you would like to actively take part in the HylaFAX community, you are invited to:

Join and participate in a HylaFAX mailing list


When corresponding about this software, please always specify:

  • what version of HylaFAX you have,
  • what system you're running on (if it is Linux please name the distribution)
  • if the problem is modem-related, identify it and the firmware rev

For example: "HylaFAX v4.0pl2 under RedHat Linux 4.2 with gcc 2.7.2; ZyXEL 1496E with 6.11a firmware."

Read the on-line documentation and resources

See: and

Review HylaFAX CVS


Report confirmed bugs, feature requests, and submit patches



The HylaFAX development team

This page was last edited on 22 December 2005, at 15:36.

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