Grandstream HT818 v2 8-Port FXS Gateway | Gigabit NAT Router & VoIP ATA

Grandstream HT818 v2: Bridge Your Analog Devices to High‑Speed VoIP Networks

The Grandstream HT818 v2 is a powerful and scalable 8‑port analog telephone adapter (ATA) designed to connect traditional analog phones and fax machines to a VoIP network. Built for users looking for a strong analog‑to‑VoIP converter, it features Grandstream’s market‑leading SIP ATA/gateway technology, ensuring exceptional voice quality across various application environments.

Key Features & Specifications

High‑Capacity Analog Connectivity – Includes 8 FXS ports (RJ11) for connecting up to 8 analog phones or fax machines, with the ability to expand further by peering with an additional FXS gateway.

Built‑in Gigabit NAT Router – Features dual 10/100/1000Mbps auto‑sensing RJ45 ports with an integrated high‑performance NAT router that handles routing speeds up to 100Mbps, eliminating the need for a separate router in small deployments.

2 SIP Profiles – Supports up to 2 SIP profiles, allowing registration to two separate VoIP services or extensions.

Superior Voice & Fax Quality – Supports a wide range of voice codecs including Opus, G.711, G.722 (HD), G.723.1, G.726, G.729A/B, and iLBC, with wide‑band HD codec for exceptional audio performance. T.38 compliant Group 3 Fax Relay supports Fax‑over‑IP up to 14.4kbps with auto‑switch to G.711 for fax pass‑through.

3‑Way Voice Conferencing – Each port supports 3‑way voice conferencing for small team collaboration without needing an external conference bridge.

Advanced Telephony Features – Includes caller ID display/block, call waiting, flash, blind/attended transfer, call forward, hold, do not disturb, and more. Supports short/long haul ring load up to 2 REN, covering up to 1km on 24AWG line.

Strong Security – Strong AES encryption with a unique security certificate per unit ensures all calls and accounts are protected. Supports TLS and SRTP encryption technologies for secure VoIP communication, as well as Secure Boot and unique certificate mechanisms.

Reliable Failover – The failover SIP server automatically switches to a secondary server if the main server loses connection, ensuring business continuity.

Automated Provisioning & Management – Supports automated and secure provisioning options using TR-069, as well as XML configuration files, enabling zero‑touch provisioning and centralized management. This is particularly valuable for large deployments, as it reduces the need for manual setup and ensures consistent configuration across devices.

Seamless UCM Integration – Works with Grandstream’s UCM series IP PBXs for zero‑configuration provisioning (Plug‑and‑Play).

GDMS Cloud Management – Compatible with Grandstream Device Management System (GDMS) for free, centralized cloud‑based management including device configuration, firmware upgrades, monitoring, troubleshooting, and statistical analysis.

LED Indicators – Clear visual status with LED indicators for POWER, NET1, NET2, and all 8 phone ports (PHONE1 through PHONE8), making it easy to monitor device and port status at a glance.

Compact & Lightweight – Ultra‑compact design measuring 180mm (W) x 120mm (D) x 36mm (H) and weighing only 356g, easily placed on a desktop or mounted on a wall.

Wide Operating Temperature – Operates reliably in temperatures from 0°C to 50°C and can be stored from -10°C to 60°C, with humidity tolerance of 10‑90% (non‑condensing).

Standards Compliance – Certified with FCC, CE, and RCM standards, ensuring compliance with international safety and electromagnetic compatibility requirements.

Why Choose the HT818 v2 for Your Business?

For small to medium‑sized businesses, call centers, or organizations with a mix of modern IP phones and legacy analog infrastructure, the HT818 v2 offers an ideal blend of high‑density analog connectivity, performance, and reliability.

• Complete Analog‑to‑VoIP Bridge – Up to 8 analog devices can be connected and used with VoIP services.

• All‑in‑One Design – Eliminates the need for a separate router in small deployments.

• Secure Communication – Strong AES encryption and unique security certificates protect every call.

• Scalable & Easy Management – Automated provisioning and centralized cloud management simplify large‑scale deployments.

• Unified Management – Manage the entire system through a single, intuitive interface.

The Grandstream HT818 v2 delivers a comprehensive, secure, and highly reliable analog‑to‑VoIP conversion platform tailored for growing organizations.