Data sheet
Powerful 2-port ATA with Gigabit NAT Router
The HT812 is an advanced 2-port analog telephone adapter (ATA) with 2 FXS ports and an integrated Gigabit
NAT router. Built upon Grandstream’s market-leading SIP ATA/gateway technology with millions of units
successfully deployed worldwide, this powerful ATA features exceptional voice quality in various application
environments, strong encryption with unique security certicate per unit, automated provisioning for
volume deployment and device management, and outstanding network performance for home and oce
use.
www.grandstream.com
HT812
Supports 2 SIP
proles and 2 FXS
ports
Strong AES
encryption with
security certicate
per unit
Automated &
secure provisioning
options using TR069
3-way voice
conferencing per
port
Exceptional voice
quality with wide-
band HD codec
Supports T.38 Fax
for reliable Fax-
over-IP
Supports dual
Gigabit network
ports
High performance
NAT router