In order to provide unified communication with your company. Retaj partner with leading IP/PBX provider in the world to offer the Saudi market with the cost-effective Telephony system. Evolve Your Communications With 3CX Phone System for Windows 3CX Phone System for Windows is a software-based PBX for Windows that works with SIP standard based IP Phones, SIP trunks, and VoIP Gateways to provide a full PBX solution – without the inflated cost and management headaches of an ‘old style’ PBX. Used by more than 30,000 companies globally, it has been recognized for its innovation and cutting-edge technology. You can apply through the link below, you will be communicating with you by our experts within 48 hours.