System requirements
FON-x80 series phones are fully supported by FortiVoice phone system versions 6.0.7, 6.4.1, or later.
FON-x80B series phones are fully supported by FortiVoice phone system versions 6.4.6 or later.
Network Security 
Network Security
NOC & SOC Management
Enterprise Networking
Business Communications
Zero Trust Access 
Cloud Security 
Hybrid Cloud Security
Cloud Native Protection
Web Application / API Protection
SAAS Security
Security Operations 
SOC Platform
Advanced Threat Protection
Endpoint Security