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- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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Description
Grandstream HT841 4-Port FXO Gateway with Gigabit NAT RouterBridge Your Analog Phone Lines to a Modern VoIP Network The Grandstream HT841 is a high performance 4 port FXO gateway designed for businesses of all sizes looking to integrate their traditional analog telephone lines with an IP based VoIP system. This powerful device allows you to seamlessly connect multiple office locations to any hosted or on premise IP PBX network, simplifying your transition to VoIP. With the HT841, you can leverage the cost
Bridge Your Analog Phone Lines to a Modern VoIP Network
The Grandstream HT841 is a high-performance 4-port FXO gateway designed for businesses of all sizes looking to integrate their traditional analog telephone lines with an IP-based VoIP system. This powerful device allows you to seamlessly connect multiple office locations to any hosted or on-premise IP PBX network, simplifying your transition to VoIP. With the HT841, you can leverage the cost savings and advanced features of VoIP telephony while preserving your investment in existing analog infrastructure.
Key Features & Benefits
- Seamless Connectivity: Features 4 RJ11 FXO ports to connect your PSTN lines and 1 RJ11 FXS port for an analog telephone or fax machine.
- High-Performance Networking: Equipped with two Gigabit (10/100/1000Mbps) RJ45 ports and a built-in high-performance NAT router for efficient traffic handling.
- Power Outage Protection: Lifeline support ensures that in the event of a power failure, the FXS port is hard-relayed to an FXO port, maintaining basic call functionality.
- Advanced Telephony Features: Supports 3 SIP profiles and a wide range of calling features, including Caller ID, call waiting, call transfer, 3-way conferencing per port, and do not disturb.
- Superior Voice Quality: Delivers crystal-clear conversations with support for numerous voice codecs like G.711, G.729, and Opus, plus advanced line echo cancellation and a dynamic jitter buffer.
- Reliable Fax over IP: T.38 Fax relay support ensures dependable transmission of faxes over your IP network.
- Robust Security: Protect your calls and accounts with strong AES encryption, TLS, and SRTP security protocols.
- Simplified Management: Features automated and secure provisioning options using TR-069, making deployment and ongoing management effortless.
- Failover Support: A failover SIP server automatically switches to a secondary server if the primary one loses connection, ensuring service continuity.
Technical Specifications
| Interfaces | |
| Telephony Interface | 4 x RJ11 FXO ports, 1 x RJ11 FXS port (with lifeline support) |
| Network Interface | 2 x 10/100/1000Mbps RJ45 ports (one with 802.3af PoE-PD support) |
| LED Indicators | Power, NET1, NET2, FXS, FXO |
| Voice, Fax, Modem | |
| Telephony Features | Caller ID display or block, call waiting, flash, blind or attended transfer, forward, hold, do not disturb, 3-way conference |
| Voice Codecs | G.711 with Annex I (PLC) and Annex II (VAD/CNG), G.723.1, G.729, G.726, iLBC, OPUS |
| Fax over IP | T.38 compliant Group 3 Fax Relay up to 14.4kbps and auto-switch to G.711 for Fax Pass-through |
| Caller ID | Bellcore Type 1 & 2, ETSI, BT, NTT, and DTMF-based CID |
| Signaling & Control | |
| Network Protocols | TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP, NTP, TFTP, SSH, STUN, SIP (RFC3261), SIP over TCP/TLS, SRTP, TR-069 |
| QoS | Layer 2 (802.1Q VLAN, SIP/RTP 802.1p) and Layer 3 (ToS, Diffserv, MPLS) |
| Provisioning | HTTP, HTTPS, TFTP, SSH, TR-069, secure and automated provisioning using AES encryption |
| Security | SRTP, TLS/SIPS/HTTPS, AES encryption |
| Physical | |
| Power | DC Input: 12V/1A; PoE Input: 802.3af (48V/0.5A) (Power Supply Not Included) |
| Dimensions | 7.48 x 3.94 x 1.1 in (190 x 100 x 28 mm) |
| Weight | 1.01 lbs (0.458 kg) |
| Environmental | Operating Temperature: 32ºF to 104ºF (0ºC to 40ºC); Humidity: 10% to 90% Non-condensing |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 688 reviews
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Product Reviews
★★★★★ 5
'A Must Buy'....!!
Color: Black
I have had multiple Magnetic phone mounts, this is by far the best one yet. For the price, it is a 'must' buy, it fits perfectly on corner of screen, very tight, never an issue with bumpy roads, sharp curves, etc. You can use mount at different angles, whatever suits your needs.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Tesla Phone Holder
Color: Black
I’m using this in my Tesla and it’s super strong. Very happy with the versatility
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Nice Phone mount
Great phone mount—stable, easy to use, and gets the job done!
I’ve been using this phone mount for a few weeks now, and it’s exceeded my expectations. It holds my phone securely, even on bumpy roads, and the adjustable arm makes it super easy to get the right angle. Installation was a breeze—took less than 2 minutes. The grip is strong without scratching the phone, and it feels sturdy overall. Highly recommend if you’re looking for a reliable mount!
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Reviewed in the United States on July 2, 2025
★★★★★ 5
Perfect Phone Mount: Secure, Versatile, and Easy to Install!
This phone mount has truly exceeded my expectations! It’s incredibly easy to install and holds my phone securely in place, providing total peace of mind while driving. What really sets this mount apart is its impressive versatility—I've never seen anything quite like it. The base attaches firmly to the air vent, and the adjustable arm allows me to position my phone precisely where I want it, with the freedom to tilt it up, down, left, or right. Plus, it doesn’t interfere with air flow from the AC, which is a huge bonus.
Although my wife's phone case isn't MagSafe-compatible, the included metal ring works seamlessly with it, and my MagSafe case connects just as smoothly.
I couldn’t recommend this product more—it’s been an absolute game-changer for us! This is a personal purchase, and I’m thrilled with it. I’ll be sure to update if anything changes.
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Reviewed in the United States on November 12, 2024
★★★★★ 5
Secure and great fit
I gave this product a chance and it did not disappoint! I did not need to read any instructions for installation and was able to quickly and easily figure it out. Installation takes less than 5 minutes. Just align the mount to the top corner of your tesla screen and turn the dial to adjust the tightness. Once tightness is set, just test to see if it’s really fitted by wiggling it around to check for looseness. I like the fact that I can adjust the angles of the mount easily. My phone can be angles to be on top or side of the Tesla screen. When driving, my phone does not shake one bit. When it’s time to remove my phone, just give it a quick pull to detach and that’s it. The build quality is also very nice and I like the design of it overall. I think it’s a well thought out product. Definitely would recommend to friends and family with Teslas.
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Reviewed in the United States on February 28, 2025
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