Grandstream HT818 ATA Adapter

Powerful 8-port VoIP gateway with 8 FXS ports and an integrated Gigabit NAT router.

Key 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
  • Exceptional voice quality with wide-band HD codec
  • Supports T.38 Fax for reliable Fax-over-IP
  • Supports dual Gigabit network ports
  • High performance NAT router
£188.39 Incl. VAT
Delivery date with Express Shipping: 22/04/2024 If order placed before 12PM
2 years of manufacturer warranty Subject to manufacturer conditions
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Internal ref: GRAHT818UK
Manufacturer part #: HT818
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Product description

Grandstream HT818 ATA Adapter 

The Grandstream HT818 ATA Adapter is built for users looking for a strog analog-to-VoIP converter. With a powerful 8-port VoIP gateway with 8 FXS ports and an integrated Gigabit NAT router it features Grandstreams market-leading SIP ATA/gateway technology. 

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.


  • Eight (8) RJ11 FXS ports
  • Two (2) 10/100/1000Mbps RJ45 ports
  • LED Indicators
  • Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference
  • G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729A/B, G.726, iLBC, OPUS, dynamic jitter buffer, advanced line echo cancellation
  • T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-switch to G.711 for Fax Pass-through
  • 2 REN, up to 1km on 24AWG line
  • Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID
  • Busy Tone, Polarity Reversal/Wink, Loop Current
  • Syslog support, SSH, remote management using web browser
  • Input: 100-240VAC, 50-60Hz 
  • Output: 12V/1.5A
  • Dimensions (L)180mm*(W)120mm*(H)36mm 
  • 356g


Data sheet

Product Specs.

More Information
Manufacturer part #HT818
Warranty2 years

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