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
Model Name
HT812
Special Feature
WPS
Compatible Devices
Personal
Recommended Uses For Product
Security
Included Components
1

⚡Gigabit NAT router for lightning-fast data flow

🔌2 FXS ports for legacy phone integration

🛠️Advanced configurable SIP settings

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€ 135.18

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Sold byAmazon FinlandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

TAILORED SIP CONFIGURATION - Unlock full control with extensive SIP options—customize your setup like a pro.
EFFORTLESS BACKUP RESTORE - Never lose your settings—multiple backup options keep your configuration safe and sound.
ROBUST SECURITY ENCRYPTION - Protect your calls with advanced encryption features, ensuring privacy in every conversation.
SEAMLESS LEGACY PHONE REVIVAL - Keep your classic landline alive with dual FXS ports—no compromises on tradition or tech.
BLAZING FAST GIGABIT NAT ROUTER - Experience ultra-smooth VoIP calls and data transfer with integrated gigabit speeds.

The Grandstream HT ATA 812 is a powerful 2-port analog telephone adapter featuring dual FXS ports and an integrated Gigabit NAT router. Designed for professionals needing to maintain traditional landline functionality while leveraging modern VoIP technology, it offers extensive SIP configuration options, robust security features, and reliable backup/restore capabilities. Ideal for seamless integration in advanced home or office networks.

Specifications

ASIN	B01M2ZJQAF
Are Batteries Included	No
Batteries	1 AAAA batteries required.
Best Sellers Rank	#45,642 in Computers ( See Top 100 in Computers ) #101 in Network Cards
Brand	Grandstream
Color	Black
Customer Reviews	4.3 4.3 out of 5 stars (473)
Date First Available	17 November 2016
Item Weight	290 g
Item model number	HT-812
Lithium Battery Energy Content	2.6 Watt Hours
Lithium Battery Packaging	Batteries contained in equipment
Lithium Battery Weight	5 Grams
Manufacturer	Grandstream
Number Of Lithium Ion Cells	4
Number of Ethernet Ports	2
Operating System	RouterOS
Power Source	Type C Plug (EU)
Product Dimensions	22.86 x 33.02 x 7.11 cm; 290 g
Standing screen display size	5 Inches
Voltage	28 Volts
Wireless Carrier	Unlocked

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