The Asterisk.org development team has announced the release of Zaptel versions 1.2.19 and 1.4.4. These releases are maintenance releases that fix various known issues. See the ChangeLog included in the releases for a full list of changes. The ChangeLogs are also available separately on the ftp site.
Both releases are available as a tarball as well as a patch against the previous release. They are available for download from downloads.digium.com.
Thank you for your support!