Grandstream HT813 Analog Telephone Adapter with FXS and FXO

The Grandstream HT813 is an analog telephone adapter with 1 FXS port for an analog phone and 1 FXO port for a PSTN line. It bridges your landline and VoIP service, with lifeline support that relays the phone to the PSTN line during a power outage.

Key Features of the Grandstream HT813

• Supports 2 SIP profiles through 1 FXS port and 1 FXO port
• Dual 100Mbps LAN and WAN ports
• Lifeline support (FXS port will be hard-relayed to FXO port) in case of power outage
• 3-way voice conferencing per port
• Automated & secure provisioning options using TR069
• Supports T.38 Fax for reliable Fax-over-IP
• Failover SIP server automatically switches to secondary server if main server loses connection
• Strong AES encryption with security certificate per unit

Ideal For

• Connecting a landline to VoIP
• Home offices
• Small businesses
• Backup PSTN calling

Frequently Asked Questions

What is the FXO port used for?

The FXO port connects a PSTN landline, so the HT813 can bridge it to VoIP.

Does the HT813 work during a power cut?

Yes. Lifeline support hard-relays the FXS port to the FXO port during a power outage.

Buy the genuine Grandstream HT813 online at Telephonykart.