Grandstream HT812 - VoIP phone adapter - 2 ports - GigE

  • Product Status: In Stock
  • PP ID Code:AA76936
  • Manufacturer Part No:
  • Warranty:12 Months


inc GST & Free Delivery



The HT812 is an easy-to-use 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 certificate per unit, automated provisioning for volume deployment and device management, and outstanding network performance for home and office use. The HT812 delivers outstanding 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.

  • Supports 2 SIP profiles through 2 FXS ports and dual Gigabit ports
  • Includes a built-in NAT router which can handle routing speeds up to 100MBps
  • TLS and SRTP security encryption technology to protect calls and accounts
  • Supports 3-way voice conferencing
  • Failover SIP server automatically switches to secondary server if main server loses connection
  • Supports T.38 Fax for creating Fax-over-IP
  • Supports a wide range of caller ID formats
  • Use with Grandstream's UCM series of IP PBXs for Zero Configuration provisioning

Main Specifications

Product Description Grandstream HT812 - VoIP phone adapter
Form Factor External
Dimensions (WxDxH) 13 cm x 9 cm x 2.85 cm
Weight 290 g
Power AC 120/230 V (50/60 Hz)
Device Type VoIP phone adapter
Ports Qty 2
Data Link Protocol Ethernet, Fast Ethernet, Gigabit Ethernet
VoIP Protocols SIP
Telephony Interfaces 2 phone (FXS)

  • Documents
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  • Extended Specifications

  • Environmental Parameters
    Min Operating Temperature 0 °C
    Max Operating Temperature 40 °C
    Humidity Range Operating 10 - 90% (non-condensing)
    Expansion / Connectivity
    Interfaces 2 x FXS - RJ-11
    2 x 1000Base-T - RJ-45
    Device Type VoIP phone adapter
    Width 13 cm
    Depth 9 cm
    Height 2.85 cm
    Weight 290 g
    IP Telephony
    VoIP Protocols SIP
    Voice Codecs G.711, G.723.1, G.729ab, G.726, iLBC, T.38
    Telephony Interfaces 2 phone (FXS)
    IP Telephony Features Call forwarding, Caller ID, call waiting, call hold, call transfer
    Compliant Standards FCC, RCM
    Form Factor External
    Ports Qty 2
    Connectivity Technology Wired
    Data Transfer Rate 1 Gbps
    Data Link Protocol Ethernet, Fast Ethernet, Gigabit Ethernet
    Network / Transport Protocol TCP/IP, UDP/IP, NTP, ICMP/IP, ARP, DHCP, RARP, RTP, RTCP
    Remote Management Protocol Telnet, HTTP, HTTPS, TFTP, TR-069
    Status Indicators Power, phone, WAN, LAN
    Features Syslog support, DiffServ support, Quality of Service (QoS), reset button
    Encryption Algorithm TLS
    Power Device External power adapter
    Voltage Required AC 120/230 V (50/60 Hz)