Description
The Grandstream HT812 v2 is an advanced 2-port analog telephone adapter that turns any traditional phone or fax machine into a fully functional VoIP endpoint. Its built-in Gigabit NAT router and dual FXS ports make it the go-to solution for small businesses and IT teams that need simple, reliable analog-to-VoIP conversion without replacing every device. You get crystal-clear HD voice, dependable T.38 fax, strong security, and easy cloud or on-prem provisioning—all in one compact unit that’s ready to deploy today.
The Telecom Spot Expert Take
We like the HT812 v2 because it solves the “what do we do with our old fax and desk phones?” problem without a forklift upgrade. The integrated Gigabit NAT router means you don’t need an extra switch or router in most setups, and the 100 Mbps throughput keeps voice traffic smooth even on busy networks. With T.38 fax and wide-band codecs, you’ll finally get fax reliability and call quality that actually matches your modern VoIP system. For teams running Grandstream UCM PBXs, zero-config provisioning is a real time-saver. Bottom line: this is the most capable 2-port ATA in its class for anyone who values security, speed, and simplicity.
The V2 versions feature a newly-designed web interface, unique randomized passwords for improved security, and support for Forward Error Correction and REDundancy Encoding to enhance anti-packet loss performance, compared to the V1 models.
Key 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
Please see the Grandstream HT812 v2 Datasheet for more details.