Quadro is a voice based IP telephony system from Epygi which allows users to make and receive calls from software phones using their computer. Vtiger-Quadro integration will allow users to use Vtiger to create and receive notifications on inc. calls.

aXfax Mod is a vtiger CRM extension, wich will allow you send faxes directly from your CRM System. With aXfax Mod, you will be able to send faxes to your customers, contacts, leads or accounts as easily as it will sending an e-mail.

Flintec provides telephony integration solutions as extensions to vTiger. The basic functions are screenpop for incoming calls and call assistance for outgoing calls. The community version Flintec Phone Lite is a 1st Party TAPI phone connector.