Grandstream HT818 8-Port FXS VoIP Gateway

The Grandstream HT818 is a robust 8-port analog telephone adapter (ATA) designed for enterprises, small offices, and service providers seeking to seamlessly connect analog devices to VoIP networks. Featuring eight RJ11 FXS ports, it allows you to connect analog telephones and fax machines efficiently while providing superior wide-area VoIP deployment capabilities.

Key Features:

• Supports 2 SIP profiles enabling flexible configuration for multiple accounts.


• Dual Gigabit Ethernet ports (WAN and LAN) support fast 10/100/1000 Mbps connections and include an integrated NAT router for enhanced network performance.


• Exceptional voice quality with wide-band HD codecs (G.711, G.722, G.723.1, G.729A/B, G.726, iLBC, OPUS) and advanced voice features like 3-way voice conferencing per port, dynamic jitter buffer, and advanced echo cancellation.


• Reliable faxing with T.38 Fax Relay and G.711 Fax Pass-through for Group 3 fax up to 14.4kbps.


• Strong security featuring AES encryption, unique security certificate per unit, and support for TLS, SRTP, and HTTPS protocols to protect signaling and media.


• Easy large-scale deployment and management through automated provisioning options (TR-069, XML configuration) and remote management via the Grandstream Device Management System (GDMS).


• Failover SIP server support ensures continuous operation even if the primary server fails.

![Grandstream HT818](

For more details, visit the [Grandstream official page](