Does it work with google voice? if it does then how hard is it to setup with google voice as compared to obi devices?

Yes googlevoice can be added Get an account at https://www2.pbxes.com/ add googlevoice trunks to pbxes.com and setup extensions on HT812 more details here http://nerdvittles.com/?p=26971

Will this convert digital voip signal to analog on a stand alone caller id unit? (connected to a point of sale system).

Yes. You will connect the device to your internal or external SIP service, then it will ring and pass through the caller ID between the rings, just like a regular phone line. Also, the caller ID is enabled by default.

What firmware and hardware rev will I get when I purchase it today?

Dear Customer, Hardware Version: V4.0A Part Number -- 9610005040A Software Version: Program -- 1.0.35.4 Bootloader -- 1.0.35.1 Core -- 1.0.35.3 Base -- 1.0.35.4 CPE -- 1.0.4.5 Best Regards, Flytec Computers.

Can this be set up to connect as an openvpn client?

OpenVPN client support was added to the Grandstream HT812 firmware version 1.0.29.8 and later. This means that if your device is running firmware version 1.0.29.8 or later, you should be able to set up the HT812 as an OpenVPN client.

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Grandstream HT ATA 812

Product ID: 275914084

Details

Brand
Grandstream
Compatible devices
Personal
Frequency band class
Dual-Band
Model name
HT-812
Special features
WPS

⚡Gigabit NAT router for blazing fast data

🔌2 FXS ports for analog phone integration

🛡️Advanced AES security protocol

AED 316

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Description

📞 Power your legacy calls with next-gen speed and security!

ROCK SOLID SECURITY - Advanced AES encryption and firewall protection keep your calls and data locked tight from prying eyes.
BLAZING GIGABIT SPEED - Integrated Gigabit NAT router ensures ultra-fast, lag-free connectivity for your home or office network.
PLUG PLAY SIMPLICITY - Designed for quick setup—get your system running in under 15 minutes and stay worry-free with remote management.
FUTURE PROOF COMPATIBILITY - Optimized for UK’s BT digital voice switchover and compatible with major SIP providers, ensuring smooth transitions and reliable calls.
SEAMLESS LEGACY MEETS MODERN - Keep your classic landline alive with dual FXS ports, perfectly bridging old-school phones to today’s VoIP world.

The Grandstream HT ATA 812 is a professional-grade 2-port analog telephone adapter featuring dual FXS ports and an integrated Gigabit NAT router. Designed for seamless integration with legacy phone systems and modern VoIP networks, it supports advanced AES security and is optimized for UK’s BT digital voice switchover. Lightweight and easy to configure, it delivers reliable, high-quality voice communication with robust firewall protection, making it ideal for both business and home environments.

Specifications

ASIN	B01M2ZJQAF
Antenna Location	Business, Home
Antenna Type	Fixed
Best Sellers Rank	#57,485 in Computers ( See Top 100 in Computers ) #111 in Network Cards
Brand	Grandstream
Built-In Media	1
Color	Black
Compatible Devices	Personal Computer
Connectivity Protocol	SIP
Connectivity Technology	Ethernet
Control Method	Remote
Customer Reviews	4.3 4.3 out of 5 stars (478)
Data Transfer Rate	100 Megabits Per Second
Frequency Band Class	Dual-Band
Global Trade Identification Number	06947273702153
Has Internet Connectivity	Yes
Has Security Updates	Yes
Is Electric	No
Is Modem Compatible	Yes
Item Dimensions L x W x H	33L x 22.9W x 7.1H centimeters
Item Weight	0.29 Kilograms
LAN Port Bandwidth	10/100/1000 megabits per second
Manufacturer	Grandstream
Maximum Upstream Data Transfer Rate	100 Megabits Per Second
Mfr Part Number	HT-812
Model Name	HT-812
Model Number	HT-812
Number of Items	1
Number of Ports	2
Operating System	RouterOS
Other Special Features of the Product	WPS
Router Firewall Security Level	Advanced
Router Network Type	cable
Security Protocol	AES
UPC	753459331842
Unit Count	1 Count
Voltage	28 Volts
Warranty Description	1

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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AED 316

Duties & taxes included

In stock

Sold byAmazon UAEDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to UAE.

Secure transaction

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Fast, free shipping, member pricing & priority support.

Join PRO →

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TrustScore 4.5 | 7,300+ reviews

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