3CX is an IP PBX that already comes with call center system integration with Vtiger, used to place outbound and inbound calls and distribute them to agents through automatic call distribution.
However, this IP PBX is not complete unless it is integrated with a customer relationship management application that stores customer data and records activities and call journaling.
Integration between the IP PBX and the CRM is needed to get a one-stop solution for call center management.
Vtiger is an open source CRM application that already integrates well with 3CX IP PBX.
