Old telephony as fallback to VoIP

• FXS port(s) for using your old phones with VoIP
• FXO port as the local PSTN gateway
• Fallback to old telephony (FXS to FXO) at loss of power, WAN, Internet or VoIP 

What are the steps to get there?

1. Get the Internet Gate.
2. Connect existing phones to the FXS port and the phone line to the FXO port.
3. The Internet Gate may be automatically configured via the service provider or manually by the user.