The HT813 is a hybrid analog telephone adapter featuring 1 FXS port and 1 FXO port, providing backup lifeline support through a PSTN line. This combination allows remote calling to and from the PSTN while extending VoIP service to an analog device. With its compact design, HD voice, advanced VoIP features, strong security, and flexible auto-provisioning, the HT813 enables users to easily transition from analog to VoIP. Service providers can also leverage its capabilities to deliver reliable, high-quality IP communication services.
Grandstream Networks HT813 Network Adapters
The HT813 is a versatile analog telephone adapter with 1 FXS port and 1 FXO port, enabling seamless integration of VoIP and PSTN lines. It supports 2 SIP profiles, dual 100Mbps ports, lifeline functionality during power outages, 3-way conferencing, T.38 Fax, failover SIP, automated provisioning, and AES encryption for secure, reliable communication.
