The Grandstream HT818 is a powerful 8-port FXS VoIP ATA gateway designed to seamlessly connect analog telephones, fax machines, and other devices to modern VoIP networks. This robust gateway solution delivers enterprise-grade voice quality and extensive telephony features, making it an ideal choice for businesses transitioning to IP-based communications.
The HT818 is perfectly suited for small to medium-sized businesses looking to leverage their existing analog phone equipment while transitioning to cost-effective VoIP technology. Whether you're connecting traditional desk phones in a multi-office environment, integrating legacy PBX systems, or enabling fax capabilities over IP networks, this gateway provides the reliability and flexibility your business demands. The compact design (7.09" x 4.72" x 1.42") allows for easy deployment in various locations, while the dual Gigabit Ethernet ports provide seamless network integration without sacrificing bandwidth.
When you choose this Grandstream HT818 gateway, you're backed by a company with over 30 years of industry leadership and expertise. Our commitment to quality means this product has undergone a meticulous testing and inspection process to ensure reliable performance for your business communications needs. With comprehensive warranty coverage and dedicated support, you can deploy your VoIP infrastructure with confidence.
Ready to modernize your phone system without sacrificing your existing equipment? The Grandstream HT818 provides the bridge between traditional telephony and next-generation VoIP technology. Order today and discover why over 250,000 happy customers trust us for their business technology needs.

New items ship in their original manufacturer's packaging. These items are in excellent condition with no blemishes on their housings.
| Manufacturer | Grandstream |
|---|---|
| Model | HT818 |
| Network Interface | 2x Gigabit Ethernet ports |
| # of Telephone Interfaces | 8 RJ11 FXS ports |
| LCD display | N/A |
| LED indicators | POWER, LAN, WAN, and PHONE1 through PHONE8 |
| Voice Compression | G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.722, G.723.1, G.729A/B, G.726-32, iLBC, and Opus |
| Fax over IP Support | T.38 compliant Group 3 Fax Relay (up to 14.4kpbs) and auto-switch to G.711 for Fax Pass-through |
| Telephony Features | Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, and 3-way conference |
| Caller ID | Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID |
| Provisioning | HTTP, HTTPS, SSH, TFTP, TR-069, and secure/automated provisioning using AES encryption and syslog |
| Security | SRTP, TLS/SIPS/HTTPS, and unique security certificate per unit |
| Dimensions | 7.09" x 4.72" x 1.42" |
| Mounting | N/A |
| Included | 1x HT818 Gateway 1x 12V Power Adapter 1x Ethernet Cable 1x Quick Installation Guide 1x GPL Statement |
Rest assured, if you order the wrong items, don't like the model, or just don't need it anymore we accept returns with NO restocking fees. Whether you want something different or just a credit, we have you covered! This policy goes hand in hand with our company culture of delivering outstanding customer satisfaction.
If you need assistance finding a different product our awesome staff is ready to help. Contact us for expert support.
All products purchased from us are covered by a 1-year warranty from the date of purchase, covering manufacturing defects and functional failures under normal business use.
Please note that batteries are an exception to this policy. Batteries are covered by a 90-day warranty due to their consumable nature.
This warranty does not cover damage caused by misuse, unauthorized modifications, or improper handling. For any warranty claims, please contact our support team with your purchase details and a description of the issue.



