DigAnTel-3.2 is a hybird Digital / Analog Telephone system utilizing open source CentOS Linux, Asterisk 1.4.32 from source, DAHDI 2.3.0 from source, FreePBX 2.7.0, VoicePulse module, Openfire IM, vtiger CRM with click to dial, PostFix mail, and OpenVPN. DigAnTel is the glue to bind these technologies thus creating a unified open source telephony system for your home or business. The installation is completely automated and doesn't require a working knowledge of Linux or Asterisk. The system supports traditional analog telephone lines, digital T1/PRI lines and digital VOIP circuits.
P.S : centos est le clone gratuit de Red Hat dont le support technique est payant.