You can configure an FXS gateway to be on the same LAN as the FortiVoice phone system or over a VPN.
The FortiVoice phone system manages all configuration information for extensions and ports. However, the FXS gateway manages the following system settings:
- Network settings
- Administrator accounts
- System options
- SIP settings
The following image shows an example topology of a FortiVoice phone system managing an FXS gateway: