Install a Vicidial server with the Vicibox.com .iso instead of the Goautodial .iso (you can install it in a Virtual Machine for testing ...). You may find that a later version has this fixed. It is also possible that there is a patch for your version of Goautodial to a later version of Vicidial ... but then again, maybe not. If so, it would likely be on the wiki at goautodial.org.
I'm not guaranteeing that this is a bug in the version you are using, but I am suggesting that it is likely ... and that an upgrade will resolve your issue.
I'm also not saying there is a problem with Goautodial, but it does not have the latest version of Vicidial code in it unless you upgrade. And after you upgrade, you will no longer be able to use the pretty goauto screens, you'll need to use the stock screens for Vicidial instead.
In case you didn't quite put all that together: The software you are using is Vicidial. Goautodial is an Installer. It installs CentOS (the operating system) and then all the necessary applications to run Vicidial (plus a bunch of pages with the GoAutoDial logo on it to brand the product). You can install the same Vicidial software with Vicibox.com's .iso and it will install in OpenSuSE (the operating system) and all the same necessary Vicidial applications ... but no GoAutodial branding. And it will allow for use of the Latest Code including all recent bug fixes and new features.
FYI.