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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
4.4 ★★★★★
Based on 21 reviews
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Product Reviews
★★★★★ 5
Big hit
Format: Paperback
A really fun collection for the young fans of the annual Simpsons Treehouse of Horror shows. My child is a little on the young (8) side for a Simpsons fan but thoroughly enjoyed this collection.
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Reviewed in the United States on November 29, 2010
★★★★★ 5
Bart Simpson's Treehouse of Horror Heebie-Jeebie Hullabaloo
Format: Paperback
The essential companion for anyone celebrating Halloween – Simpsons style!
Now Simpsons fans can trick or treat along with their favourite family with this compendium of tips and features, including how to monster–proof your room, how to tell if your babysitter is a witch, and how all the citizens of Springfield celebrate Halloween. Plus, they'll enjoy three complete issues of Bart Simpson's Treehouse of Horror comics.
The Simpsons is the 12th–most–watched show among all age groups, and the longest–running animated television serries ever with more than 200 episodes. The highly anticipated Halloween show is The Simpsonsߨighest rated episode each year. Boo!
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Reviewed in the United States on July 22, 2018
★★★★★ 5
A must have for any Simpsons fan
Format: Paperback
For those of you who are fans of the hit television show "The Simpsons", you are probably well acquainted with the legendary "Treehouse of Horror" episodes that have become a Halloween tradition. These episodes have proven to be such a seasonal favorite that Groening and the gang have decided to dish out even more tales of terror in "Bart Simpson's Treehouse of Horror: Heebie-Jeebie Hullabaloo".
Hullabaloo is a collection of comics and sketches that cleverly capture the humor and style of the Simpsons Halloween specials. Much like the television version, the main stories in Hullabaloo are parodies of famous horror films. The first story in the book is a parody of the classic horror film "The Blob". In the sketch, Simpsons character Sideshow Bob takes an experimental treatment that transforms him into "Sideshow Blob". Seizing the opportunity to take revenge on his nemesis Bart, Sideshow Blob squeezes out of prison and wreaks havoc on Springfield.
After Springfield is saved from "Sideshow Blob", they barely have time to recover before Lisa becomes possessed by the evil spirit of Madonna in "The Exorsister", a combo-parody of the infamous "Exorcist" and the even more infamous Madonna. The book continues with additional parodies of films such as "Little Shop of Horrors", "The Invasion of the Body Snatchers", and "Cat People".
In between the main features of the book are a plethora of comics, guides, and stories hosted by and featuring an assortment of Springfield characters. One of these guides features everyone's favorite slack-jawed yokel, Cletus Del Roy. Cletus presents to us "A Yokels Guide to Halloween" which teaches us how to celebrate Halloween like "Edgar Allan" Poe white trash. Another extra features Bart's "Guide to Low-Budget Costumes" which shows you how to cheaply transform yourself into horrid monsters such as "Vaselino, The Thing That Wouldn't Dry". You'll also find the story of "Elijah Dunn and the One-Armed Nun", Evil Dr. Burn's "Goodtime Servant Factory", "Springfield in Hell", and much, much more.
Hullabaloo is colorful, fun, entertaining, and just in time for Halloween. The comical cast breathes sarcasm and humor into favorite horror classics. If you are a fan of the Simpsons and Halloween, then this book will not disappoint you.
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Reviewed in the United States on January 15, 2003
★★★★★ 4
Graphic Novel Review
Format: Paperback
I can say this comic is great though can't match the Simpsons TV show at least that is what I'm thinking. Still liked the stories has ones like Lisa getting possessed by Maddona and Sideshow Bob turning into a blob. Would recommend this to any Simpsons fan thought they could get a place in TV but that's jumping the gun.
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Reviewed in the United States on October 24, 2014
★★★★★ 5
My Review...
Format: Paperback
This is a great addition to the Simpsons' book family. It is just like the show, but you can spend as much time reading it as you want.
I think this book is extermly fuuny. I have read pretty much every Simpsons' book and this is worth being next with them.
I love how the Simpsons' comedy is different than other cartoons and even shows. The comedy is not always dark but it is not always light either. "Little Shop of Homers" was a great finisher. I wish it would of been longer, but it is OK.
As with most people, one of my favorite parts in the Simpsons' comics are the in between things. For example, "Moe's Guide To Superstitions", "Bart Simpson-Master Of Disguise presents The Quick 'N' Easy, Low-Budget Do-It-Yourself Guide To COOL COSTUMES".
Well, that is all I can really say. I suggest Simpson fans should read this.
Keep them coming and I will keep reading..
Have A Nice LiFE!
Ryan
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Reviewed in the United States on September 12, 2000
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