Intallation of an IP PBX, based on Asterisk and integratid with Elastix. This new system incorporates IVR functionality such as pre-recorded welcome messages, routine call automation, automatic call transfer to the relevant department, and storing of recorder calls and later recovery from database. Moreover, this new IP PBX links every physical location of the call center without aditional cost for the organization, allows for the management of fax services through email, and offers the overall hability to integrate added value services that are native to VoIP to the communications infraestucture, such as backup capabilities and distributed files.