The HT812 delivers powerful VoIP technology and routing capabilities to home and office environments, and allows users to successfully connect their analog devices to a manageable and powerful VoIP network. Built using Grandstream’s market-leading SIP ATA/gateway technology, with millions of units successfully deployed worldwide, this powerful ATA features exceptional voice quality in various applications and environments. The HT812 comes with 2 easy-to-use FXS ports, an integrated Gigabit NAT router, state-of-the-art encryption with a unique security certificate per unit, automated provisioning for volume deployment and device management and outstanding network performance. More information: Network | Web-based management | Yes |  | Quality of Service (QoS) support | Yes | Ports & interfaces | Ethernet LAN (RJ-45) ports | 2 | | I/O ports | 2 x FXS, 2 x RJ-45 | Protocols | Supported network protocols | TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, TELNET, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR-069 | | Management protocols | Telnet | Logistics data | Harmonized System (HS) code | 85177900 | Power | Output voltage | 12 V | | Output current | 0.5 A | Operational conditions | Operating temperature (T-T) | 0 - 40 °C | | Storage temperature (T-T) | -10 - 60 °C | | Operating relative humidity (H-H) | 10 - 90 % | Security | Security algorithms | AES, HTTPS | Weight & dimensions | Dimensions (WxDxH) | 130 x 90 x 28.5 mm | | Weight | 353.33 g | Features | Voice codecs | iLBC, G.711, G.723.1, G.726, G.729A, G.729B, OPUS | | Fax compatibility | T.38 | | Reset button | Yes | | LED indicators | Yes | | Certification | FCC/CE/RCM, K.21 | Call management | Caller ID | Yes | | Conference call | Yes | | Call waiting | Yes |
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