The HT812 V2 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 certificate per unit, automated provisioning for volume deployment and device management, and outstanding network performance for home and office use.
HT812 v2
Powerful 2-Port ATA with Gigabit NAT Router
The HT812 v2 is an advanced 2-port analog telephone adapter (ATA) with 2 FXS ports and an integrated Gigabit NAT router.
Description
Features
- 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
- LED Indicators – POWER, NET1, NET2, PHONE1, PHONE2
- Automated provisioning options include TR-069 and XML config files
- 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







GXW4004/4008
Constructing a high-end and interoperable communications network with your analog endpoints is easier than ever. The GXW4004/4008 is ideal for small to medium business that are looking to integrate existing PSTN telephony systems into an IP telephony solution.
Product datasheets
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Product datasheets
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HT702/704
The HT702/704 analog telephone adapter (ATA) allows users to create a high-quality and manageable IP telephony solution for home or office applications. The product features 2/4 FXS port and 1 10/100Mbps port to extend VoIP services to analog phones.
Product datasheets
For Pricing Click Here
Product datasheets
For Pricing Click Here
