---
product_id: 103437197
title: "Grandstream Networks HT818 VoIP telephone adapter"
brand: "grandstream"
price: "45049 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "Grandstream"
url: https://www.desertcart.is/products/103437197-grandstream-networks-ht818-voip-telephone-adapter
store_origin: IS
region: Iceland
---

# Gigabit NAT router for blazing fast network performance 8 FXS ports for multi-line analog integration Strong AES encryption with unique security certificate Grandstream Networks HT818 VoIP telephone adapter

**Brand:** grandstream
**Price:** 45049 kr
**Availability:** ✅ In Stock

## Summary

> 📞 Secure your voice, amplify your network — the HT818 means business.

## Quick Answers

- **What is this?** Grandstream Networks HT818 VoIP telephone adapter by grandstream
- **How much does it cost?** 45049 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/103437197-grandstream-networks-ht818-voip-telephone-adapter)

## Best For

- grandstream enthusiasts

## Why This Product

- Trusted grandstream brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-Line Mastery:** Supports 2 SIP profiles and 8 FXS ports to power your entire office setup seamlessly.
- • **Rock-Solid Security:** Each unit comes with strong AES encryption and a unique security certificate, keeping your calls private and secure.
- • **Plug & Play Provisioning:** Automated TR-069 provisioning simplifies large-scale deployments and device management effortlessly.
- • **Crystal Clear Conferencing:** 3-way voice conferencing per port lets you collaborate without missing a beat.
- • **Enterprise-Grade Performance:** Integrated Gigabit NAT router ensures lightning-fast, reliable connectivity for demanding business environments.

## Overview

The Grandstream HT818 is a robust 8-port VoIP telephone adapter featuring 8 FXS ports and dual SIP profiles, designed for seamless analog-to-VoIP conversion. It delivers enterprise-grade voice quality with strong AES encryption and unique security certificates per unit. Equipped with an integrated Gigabit NAT router and automated TR-069 provisioning, it supports efficient large-scale deployments and reliable network performance, making it ideal for professional office environments.

## Description

The HT818 is a powerful 8-port VoIP gateway with 8 FXS ports and an integrated Gigabit NAT router. Built for users looking for a strong analog-to-VoIP converter, it features Grandstream’s market-leading SIP ATA/gateway technology with millions of units successfully deployed worldwide. This powerful gateway carries 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 enterprise use.

Review: 8 port, Grandstream ATA - Not a cheap purchase, however, replaced a tired and noisy London 16. Power pack works fine 110-240 vac. Worth it for legacy loop disconnect (dial) telephones. Really easy to set up the parameters needed.
Review: BT Phones need a master socket or a DSL Filter - Just purchased one of these from VoiPon because desertcart's delivery would have been too slow. At the moment the phone lines only register sometimes (randomly), but the immediate problem was that when you rang one of the BT analog phones through FreePBX, the bells did not ring (although you could answer the call). After reading many online questions and answers without success, I remembered the "anti-tinkle" circuit dating back to pulse dialing phones required a master socket with a capacitor to connect the phone bell. You can also use an ADSL filter because apparently that also has a "ring" capacitor inside it. All phones ring now. So in summary, BT analog POTS phones need a capacitor to connect the 3rd wire (found in master sockets and ADSL filters) so that the bell will ring. (An old US phone I had seems not to need the capacitor.)

## Features

- Supports 2 SIP profiles and 8 FXS ports
- Strong AES encryption with security certificate per unit
- Automated & secure provisioning options using TR069
- 3-way voice conferencing per port
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07B6TL7N6 |
| Best Sellers Rank | 103,319 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 46 in VoIP Telephone Adapters |
| Guaranteed software updates until | unknown |
| Item model number | HT818 |
| Manufacturer | Grandstream |
| Product Dimensions | 9 x 13 x 2.85 cm; 500 g |

## Product Details

- **Brand:** Grandstream
- **Colour:** Black
- **Compatible devices:** Personal computer, laptop
- **Connectivity technology:** Ethernet, Wi-Fi
- **Frequency band class:** Dual-Band
- **Included components:** Gateway
- **Model name:** HT818
- **Recommended uses for product:** Home
- **Special feature:** WPS
- **Wireless communication standard:** 802.11g

## Images

![Grandstream Networks HT818 VoIP telephone adapter - Image 1](https://m.media-amazon.com/images/I/61+x+ztuLRL.jpg)

## Questions & Answers

**Q: Does this have a built in firewall?**
A: No

**Q: Can the ethernet ports be used in bridge mode instead of nat mode? if so can they bridge traffic at a full 1gbps?**
A: I don't know why you would want to set it up in bridge mode, except for maybe a 1ms reduction in latency for SIP calls, while slowing down your main networks traffic, via a new choke point. Also the reason you can't use this in bridge mode is it would require it's own IP Address, and your router would need one too, most ISPs won't let you use 2 IPs from the same connection. Now a bridge mode where it uses the same IP from your ISP is possible, but that would still be using some NAT for it's self and your router. If you attach this straight to your router and  main network, bypassing this ATAs NAT firewall, you wouldn't be increasing latency by any noticeable amount, nor adding another choke point, and you won't be adding to a complicated mess of cables. If you just run an Ethernet cable from your routers LAN port to the Internet port on this, and it should work as long as you have its IP Configuration setting to be DHCP or Automatic, which should be the default. You may need to forward some ports in your router though, but the service provider your using should tell you if you need to and how to set it up and what to enter in.

By the way I do not own one of these ATAs but have done a very high level of research on these types of ATAs, and have been working on Small Business/Large Scale Home IT networking for the past 4-6 years.

**Q: Does this device work with fax machines using itu-t super g3?**
A: Yes, the Grandstream HT818 supports fax machines using ITU-T Super G3 protocol. The device is designed to support T.38 fax relay, which is an industry-standard protocol for sending faxes over IP networks.

**Q: Can this unit power the rj11 fxs ports to power analog phones?**
A: The data sheet lists a Ring Equivalence Number (REN) of 2 so it should be able to ring up to 2 analog phones simultaneously.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 8 port, Grandstream ATA
*by W***4 on 24 July 2024*

Not a cheap purchase, however, replaced a tired and noisy London 16. Power pack works fine 110-240 vac. Worth it for legacy loop disconnect (dial) telephones. Really easy to set up the parameters needed.

### ⭐⭐⭐⭐ BT Phones need a master socket or a DSL Filter
*by M***L on 10 December 2023*

Just purchased one of these from VoiPon because Amazon's delivery would have been too slow. At the moment the phone lines only register sometimes (randomly), but the immediate problem was that when you rang one of the BT analog phones through FreePBX, the bells did not ring (although you could answer the call). After reading many online questions and answers without success, I remembered the "anti-tinkle" circuit dating back to pulse dialing phones required a master socket with a capacitor to connect the phone bell. You can also use an ADSL filter because apparently that also has a "ring" capacitor inside it. All phones ring now. So in summary, BT analog POTS phones need a capacitor to connect the 3rd wire (found in master sockets and ADSL filters) so that the bell will ring. (An old US phone I had seems not to need the capacitor.)

### ⭐ EU product, should not be sold in the UK
*by M***2 on 11 April 2021*

Item ships with EU power adaptor not UK power adaptor. Will be returning.

## Frequently Bought Together

- Grandstream VoIP Gateway 8-Port FXS with Gigabit NAT Router (HT818)
- Grandstream GS-HT814 4 Port Ata with 4 Fxs Ports and Gigabit NAT Router Voip Phone and Device, Black
- Grandstream 2-FXS Port Analog Telephone Adapter (HT802)

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-22*