PRODUCT OVERVIEW
The HT812 is a 2 ports analog telephone adapter (ATA) that allows users to create a high-quality and
manageable IP telephony solution for residential and office environments. Its ultra-compact size, voice
quality, advanced VoIP functionality, security protection and auto provisioning options enables users to take
advantage of VoIP on analog phones and enables service providers to offer high quality IP service. The
HT812 is an ideal ATA for individual use and for large scale commercial IP voice deployments since it
permits small and medium businesses to create integrated IP and PSTN telephony systems that efficiently
manage communication costs. The HT812 inclusion of an integrated NAT router and dual 10/100/1000Mbps
Ethernet WAN and LAN ports enables a shared broadband connection between multiple Ethernet devices
as well as the extension of VoIP services to analog phones.
Feature Highlights
The following table contains the major features of the HT812/HT814:
Table 1: HT812 Features in a Glance
HT812/HT814 Technical Specifications
The following table resumes all the technical specifications including the protocols/standards supported,
voice codecs, telephony features, languages and upgrade/provisioning settings for the HT812.
Support 2 SIP profiles through 2 FXS ports and dual 10/100/1000Mbps Ethernet
port
Support 3-way voice conferencing
Support wide range of caller ID formats
Support advanced telephony features, including call transfer, call forward, call-
waiting, do not disturb, message waiting indication, multi-language prompts,
flexible dial plan and more
Support T.38 Fax for creating Fax-over-IP
TLS and SRTP security encryption technology to protect calls and accounts
Automated provisioning options include TR-069 and XML config files
Failover SIP server automatically switches to secondary server if main server
loses connection
Use with Grandstream’s UCM series of IP PBXs for Zero Configuration
provisioning
GR-909 Line Testing Functionalities
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