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 Powerful 2-Port ATA with Gigabit NAT Router

Product ID: 38062621

Details

Antenna Type
Fixed
Brand
Grandstream
Color
black
Compatible Devices
Personal
Connectivity Technology
Ethernet
Frequency Band Class
Single-Band

⚡Dual Gigabit Ethernet ports

📞2 SIP profiles via 2 FXS ports

🔒TLS & SRTP call encryption

AR$232987

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Sold byAmazon ArgentinaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

📞 Stay connected, secure, and ahead of the curve with Grandstream HT812!

PLUG AND PLAY SIMPLICITY - Compact, low-heat design with minimal indicator lights—set it up once and forget it, no tech headaches.
ROCK SOLID CALL SECURITY - Advanced TLS and SRTP encryption protect your conversations and accounts from prying eyes.
VERSATILE NETWORK INTEGRATION - Built-in NAT router handles up to 100 Mbps routing speeds, perfect for home or small office setups.
SEAMLESS LEGACY NUMBER RETENTION - Keep your classic landline alive with modern VoIP tech—no compromise on call quality or familiarity.
BLAZING FAST GIGABIT CONNECTIVITY - Dual Gigabit ports ensure ultra-smooth data flow and crystal-clear voice transmission without lag.

The Grandstream HT812 is a powerful 2-port analog telephony adapter featuring dual FXS ports supporting 2 SIP profiles, dual Gigabit Ethernet ports for high-speed connectivity, and built-in NAT routing up to 100 Mbps. It employs TLS and SRTP encryption to safeguard calls and accounts, making it an ideal solution for professionals seeking to retain legacy landline numbers with modern VoIP technology, all in a compact, energy-efficient design.

Specifications

ASIN	B01M2ZJQAF
Antenna Location	Security
Antenna Type	Fixed
Best Sellers Rank	#92,457 in Office Products ( See Top 100 in Office Products ) #2 in VoIP Telephone Routers #235 in Computer Routers
Brand	Grandstream
Built-In Media	1
Color	black
Compatible Devices	Personal Computer
Connectivity Protocol	Ethernet
Connectivity Technology	Ethernet
Control Method	Remote
Controller Type	Switch
Customer Reviews	4.4 4.4 out of 5 stars (481)
Data Transfer Rate	100 megabits_per_second
Frequency Band Class	Single-Band
Global Trade Identification Number	06947273702153
Item Dimensions L x W x H	13"L x 9"W x 2.8"H
Item Weight	0.29 kg
LAN Port Bandwidth	1000 Mbps
Manufacturer	GrandStream
Maximum Upstream Data Transfer Rate	100 megabits_per_second
Mfr Part Number	HT-812
Model Name	HT812
Model Number	HT-812
Number of Items	1
Number of Ports	2
Operating System	Firmware
Other Special Features of the Product	WPS
Router Network Type	wired
Security Protocol	AES
UPC	753459331842
Unit Count	1 Count
Voltage	28 volts
Warranty Description	Limited warranty

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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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AR$232987

Duties & taxes included

In stock

Sold byAmazon ArgentinaDelivered 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 Argentina.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Good experience, but the tracking updates could be better.

2 months ago

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Customer service was outstanding when I had questions about the product.

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