Extend your VoIP system with further efficient features

Once you setup a basic VoIP system you can further extend it with various advanced features and configurations. This section offers tutorials and explanations on VoIP related advanced concepts with which you can make your VoIP system more powerful and efficient. These terms and processes are voice codecs, SIP trunking, VoIP security, attended call transfer, PC-to-phone calls, GSM VoIP gateway, etc.