Grandstream HT841 Analog FXO Gateway — Connect Analog Lines to Your VoIP Network

The Grandstream HT841 is an enterprise-grade analog FXO gateway that bridges your existing PSTN lines with any SIP-based IP PBX system. Ideal for small to mid-sized businesses, branch offices, and multi-location deployments, the HT841 delivers reliable voice quality, built-in NAT routing, and easy provisioning — all backed by Reef Telecom's industry-leading 10-year warranty.

Key Specifications

• 4 FXO ports + 1 FXS port with 3 SIP profile support
• 2 Gigabit Ethernet (GigE) ports with PoE support
• High-performance NAT router with built-in firewall
• Lifeline support — FXS port hard-relays to FXO port during power outages
• T.38 Fax-over-IP for reliable fax transmission
• 3-way voice conferencing per port
• Failover SIP server for automatic secondary server switchover
• AES encryption with per-unit security certificate
• Automated provisioning via TR-069 and HTTPS
• Compact design: 190mm x 100mm x 28mm, 0.46 kg

Why Buy from Reef Telecom?

• 10-Year Warranty — The longest coverage in the industry
• Free Shipping on orders over $300
• Expert support from certified telecom specialists

Ideal Use Cases

The HT841 is perfect for connecting analog PSTN lines to hosted or on-premise IP PBX systems, supporting remote office PSTN access, and integrating legacy analog phones or fax machines into modern VoIP networks. Compatible with all major SIP platforms including Asterisk, FreePBX, 3CX, and Grandstream UCM series.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.