1) Welcome to the Party!
2) As you are obviously new here, I have some suggestions to help us all help you:
When you post, please post your entire configuration including (but not limited to) your installation method (7.X.X?) and vicidial version with build (VERSION: 2.X-XXXx ... BUILD: #####-####).
This IS a requirement for posting along with reading the stickies (at the top of each forum) and the manager's manual (available on EFLO.net, both free and paid versions)
You should also post: Asterisk version, telephony hardware (model number is helpful here), cluster information if you have one, and whether any other software is installed in the box. If your installation method is "manual/from scratch" you must post your operating system with version (and the .iso version from which you installed your original operating system) plus a link to the installation instructions you used. If your installation is "Hosted" list the site name of the host.
If this is a "Cloud" or "Virtual" server, please note the technology involved along with the version of that techology (ie: VMware Server Version 2.0.2). If it is not, merely stating the Motherboard model # and CPU would be helpful.
Similar to This:
Vicibox X.X from .iso | Vicidial X.X.X-XXX Build XXXXXX-XXXX | Asterisk X.X.X | Single Server | No Digium/Sangoma Hardware | No Extra Software After Installation | Intel DG35EC | Core2Quad Q6600
3) You really need to post a link to your installation instructions when you have an installation failure.
4) WHY are you not using the .iso installer from Vicibox.com? (Note: There are often good reasons, not suggesting you don't have one, but it's often useful to know the reason/situation ... plus, if you don't have one ... you should be using the Vicibox.com .iso installer! lol)
5) If you can't use the Vicibox.com .iso installer (see the previous question) for whatever reason: You should be using the Goautodial installation method which allows stock CentOS and Goautodial's repositories to get Vicidial online pretty easily. Instructions on their wiki. If you want the latest Vicidial instead of the version provided by Goautodial, just upgrade as soon as you're done. That will break all the special goautodial "extras", but provide a fully-functional "latest" Vicidial.
6) Asterisk should not be running as a "service". Vicidial is a service, and the Vicidial service starts asterisk in a "screen". This is absolutely required for proper operation. The entire concept of Vicidial is that it controls the PBX (asterisk). The database, perl scripts, html and php web pages ... all center around controlling the PBX.