£0.00
NetXL Logo
Hello! Log InYourAccount
  • Networking
  • Antennas
  • CCTV
  • Smart Home & Security
  • Speakers
  • VoIP
  • Accessories
  • Brands
  • Bundles
  • Reduced
Help & SupportExpress ShippingTrade Account
Explore
  • Brands A-Z
  • Categories
  • Reduced & Clearance
  • Bundles
Trade
  • Apply for Trade Account
  • Trade Account Benefits
  • API
More from NetXL
  • About Us
  • Blog
  • News
Terms
  • Terms & Conditions
  • Privacy Policy
Help & Support
  • Contact Us
  • FAQs
  • Delivery Policy
  • Returns
Apple Pay acceptedGoogle Pay accepted

Unit 4, Riverside Business Park, Walnut Tree Close, Guildford, Surrey, GU1 4UG

Registered in England & Wales. Company No: 13500507 VAT No: GB 386 0823 76

Copyright © 2025 NetXL Distribution Ltd, All rights reserved.

Home
Grandstream
Grandstream HT812 2 Port VoIP Analogue Telephone Adaptor and Router
Grandstream HT 812 VoIP Adaptor

Click to zoom

Grandstream HT 812 VoIP Adaptor
Grandstream HT 812 VoIP Adaptor Rear
Grandstream HT 812 VoIP Adaptor Top

Grandstream HT812 2 Port VoIP Analogue Telephone Adaptor and Router

Part Number: HT812

£62.49inc VAT
£52.08ex VAT

2 In Stock

Easy Returns

Bulk Pricing

  • 1+

    £62.49

  • 5+

    £56.95

  • 10+

    £51.41

The HT812 is a powerful analogue telephone adapter designed for users looking to connect their analogue devices to a VoIP network in either a home or office. It offers an advanced 2-port analogue telephone adapter (ATA) with 2 FXS ports and an integrated Gigabit NAT router.

Description

The HT812 is an easy-to-use 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. The HT812 delivers outstanding VoIP technology and routing capabilities to home and office environments and allows users to successfully connect their analog devices to a manageable and powerful VoIP network.

Key Highlights

  • 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
  • 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

What’s in the box?

  • HT812 Telephone Adapter
  • UK Power Adapter
  • Ethernet Cable
  • Quick Installation Guide
  • GPL Statement

Documents

  • Data Sheet:Grandstream HT812 DataSheet

You might also like

Best Seller
Grandstream HT 802 VoIP Adaptor Top

Grandstream HT802 Analogue Adapter

£52.99inc VAT
Grandstream HT 814 VoIP Adaptor Ports

Grandstream HT814 ATA Router

£115.49inc VAT
ATA 192 Analogue Adaptor

Cisco ATA 192 Analogue Adaptor

£104.99inc VAT

More by Grandstream

Grandstream HT801 VoIP Adaptor Front

Grandstream HandyTone HT801 Adapter

£48.49inc VAT
HT812-V2-1

Grandstream HT812-V2 ATA Router

£46.00inc VAT
Grandstream HT 814 VoIP Adaptor Ports

Grandstream HT814 ATA Router

£115.49inc VAT
Best Seller
Grandstream HT 802 VoIP Adaptor Top

Grandstream HT802 Analogue Adapter

£52.99inc VAT
Best Seller
Grandstream HT813 Analogue Telephone Adapter Right

Grandstream HT813 Analogue Adapter

£92.50inc VAT
Grandstream HT818 voipadapter front

Grandstream HT818

£188.50inc VAT
New
Grandstream HandyTone HT881 gateway

Grandstream HandyTone HT881 gateway

£241.49inc VAT
Save £44
grandstream/ht841-front

Grandstream HandyTone HT841 Gateway

£120.00inc VAT

Latest Tech News

Read Blog
Grandstream Access Points Explained: Your Simple Guide to Smarter WiFi
NetXL 30 Apr 2025 | 5 min readGrandstream Access Points Explained: Your Simple Guide to Smarter WiFi

A Beginners Guide to the Grandstream Access Point Portfolio

Shelly Launches UK Installer Programme
NetXL 4 Apr 2025 | 5 min readShelly Launches UK Installer Programme

Shelly is offering a new way to connect customers with certified experts!

NetXL are Attending The Security Event 2025!
NetXL 31 Mar 2025 | 5 min readNetXL are Attending The Security Event 2025!

NetXL will be at the NEC Birmingham to present an interactive experience of Shelly's trailblazing smart automation devices!

Product Spotlight: The Yealink AX83H WiFi Handset
NetXL 25 Mar 2025 | 5 min readProduct Spotlight: The Yealink AX83H WiFi Handset

We’re shining a light on how Yealink’s first ever WiFi handset is streamlining comms at a punchy price point!

How Shelly is Revolutionising Electrical Installations
NetXL 17 Mar 2025 | 5 min readHow Shelly is Revolutionising Electrical Installations

We speak to Ben, the founder of B Electrical, about how Shelly is turning an industry on its head.

How Do I Set Up My DrayTek Router?
NetXL 26 Feb 2025 | 5 min readHow Do I Set Up My DrayTek Router?

You’re the proud owner of a brand-new DrayTek router - here’s how to set it up, connect to the internet, and make it sing and dance exactly how you want.

NetXL Nominated for Two Accolades at Technology Reseller Awards
NetXL 26 Feb 2025 | 5 min readNetXL Nominated for Two Accolades at Technology Reseller Awards

NetXL nominated for Hardware Distributor of the Year and UC & Connectivity Distributor of the Year

Stop Sabotaging Your Setup: Choosing the Perfect Ethernet Cable
NetXL 23 Dec 2024 | 5 min readStop Sabotaging Your Setup: Choosing the Perfect Ethernet Cable

You've been choosing network cables wrong - here's how to fix that!