Grandstream HT841 Analog FXO Gateway | 4 FXO + 1 FXS & PoE
Grandstream HT841: Seamlessly Bridge Your PSTN Lines to VoIP
The Grandstream HT841 is a powerful and easy-to-deploy analog FXO gateway that enables businesses of all sizes to benefit from their broadband network by integrating new IP technology with their existing analog phone system. This enterprise-grade gateway bridges the gap between traditional telephony and modern IP communications, making it an ideal solution for offices looking to leverage their PSTN lines, enhance call management, or transition to a VoIP system without replacing their entire infrastructure.
Key Features & Specifications
Seamless PSTN-to-VoIP Integration – The HT841's 4 RJ11 FXO ports allow you to connect up to 4 analog PSTN lines (such as PTCL) directly to your IP PBX. This allows you to make and receive calls over your existing analog lines while gaining the advanced features and cost benefits of a VoIP network.
Built-in Analog Phone Port for Failover – The 1 RJ11 FXS port lets you connect a standard analog telephone or fax machine. In the event of a power outage, lifeline support will automatically hard-relay the FXS port to an FXO port, ensuring you never lose the ability to make essential calls.
Flexible Network Connectivity & PoE – Equipped with dual 10/100/1000Mbps RJ45 ports, the HT841 features a high-performance NAT router. The NET2 port supports the 802.3af PoE-PD standard, allowing the gateway to be powered directly from a PoE switch, simplifying installation and reducing cable clutter and power outlet requirements.
Enhanced Voice Quality & Comprehensive Codec Support – The gateway delivers exceptional voice clarity with advanced line echo cancellation and support for a wide range of voice codecs, including Opus, G.722 (HD voice), G.711μ/a, G.723.1, G.726, G.729A/B, and iLBC.
Rich Telephony & Collaboration Features – Each FXO port supports 3-way voice conferencing, enabling efficient collaboration. It features a comprehensive set of telephony functions including Caller ID, call waiting, blind/attended transfer, call forward, hold, and do not disturb.
Strong Security & Reliability – Security is a priority, with strong AES encryption and a unique security certificate per unit to protect calls and accounts. The failover SIP server feature ensures business continuity by automatically switching to a secondary server if the main server loses connection.
Why Choose the HT841 for Your Business?
The Grandstream HT841 is the perfect solution for connecting traditional PTCL analog lines to a modern VoIP system, allowing you to maximize your investment in existing phone lines while enjoying advanced VoIP features. It can also simplify wiring and reduce power adapter requirements in server rooms or network closets thanks to its PoE capability.
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Easy to Deploy & Manage – Supports automated provisioning via TR-069 and XML configuration files, enabling zero-touch large-scale deployments.
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Future-Proof Your Office – It is ideally suited for small enterprises, as well as those with virtual and branch locations, to benefit from IP technology.
The Grandstream HT841 delivers a comprehensive, secure, and highly reliable PSTN-to-VoIP conversion platform tailored for small to medium-sized businesses.
Technical Specifications
Frequently Asked Questions
Q1: Can I connect an analog phone to the HT841? +
Yes, the HT841 includes 1 built-in FXS port which you can use to connect a standard analog telephone or a fax machine. In a power outage, the lifeline support feature will hard-relay this FXS port to an FXO port, keeping the analog phone functional.
Q2: Does the HT841 support faxing? +
Yes. The HT841 supports T.38 Fax-over-IP for reliable faxing over a VoIP network and can auto-switch to G.711 for fax pass-through, making it suitable for businesses that still need to send faxes.
Q3: What is lifeline support, and why is it important? +
Lifeline support is a critical feature for Pakistani offices. If there is a power outage, an internal switch will automatically hard-relay the FXS port (connected to an analog phone) to one of the FXO ports (connected to a PSTN line). This allows the analog phone to continue making calls directly through the telephone line, ensuring you never lose your primary phone service.
Q4: How does it work with PTCL landlines in Pakistan? +
You connect your analog PTCL telephone lines to the 4 FXO ports on the gateway. The HT841 then converts these analog signals into VoIP, allowing them to be used as trunk lines on SIP-based IP PBXs, such as a Grandstream UCM series.