FortiVoice by Fortinet is a Unified Communications and collaboration solution that provides integrated calling, conferencing, chat, fax and mobility capabilities. It delivers enterprise-grade phone functionality through physical appliances, virtual machines, and cloud deployments. The system supports up to 50,000 extensions and includes features like SSL encryption, SIP attack prevention, call interception protection, and dual network connections with local survivability. FortiVoice integrates with FortiGate NGFW and Fortinet Secure SD-WAN for enhanced protection of phone devices and applications while enabling quality of service optimization for real-time voice traffic.