### Grandstream HT814 4-Port FXS VoIP Gateway Analog Telephone Adapter (Model: HT814)
Migrate your company's traditional analog telephone hardware seamlessly over to modern high-speed fiber internet networks, slash your monthly business call bills, and secure absolute voice routing stability. Up for sale is the pre-owned, high-performance Grandstream 4-Port FXS VoIP Gateway Analog Telephone Adapter (Model Designation: HT814) finished in its signature ultra-compact matte midnight black low-profile casing layout. Engineered by an undisputed global leader in IP telecommunications infrastructure, this professional multi-port voice gateway is built to deliver crystal-clear digital communication loops 24/7.
Featuring four native analog FXS telephone interface tracks and two high-speed Gigabit Ethernet ports, it bridges legacy hardware and modern cloud networks effortlessly with absolute data alignment.
***THE 4-LINE ENTERPRISE BUNDLE ADVANTAGE: Unlike basic home user phone boxes that only support a single line, this professional "HT814" high-spec model houses four independent FXS telephone ports. This allows a business manager, call center startup, or remote home office admin to plug up to four standard analog desk phones, analog fax machines, or cordless telephone bases into one compact boxassigning independent SIP extensions or phone numbers to each line. Sourced from clean corporate office clearouts, it features an integrated high-performance NAT router engine and state-of-the-art TLS/SRTP security encryption layers to guarantee total voice transmission privacy. The "Make an Offer" feature is fully enabled for a quick transaction turnaround loop.***
#### SIMPLE LAYMAN GUIDE - HOW THIS GRANDSTREAM VOIP GATEWAY EMPOWERS YOU
You do not need to be an advanced telecom systems architect or a certified corporate network engineer to unlock the incredible value of this adapter:
1. Keeps Your Reliable Analog Desk Phones: Moving your office over to a modern digital fiber network? You do not need to throw away your perfectly working analog desk phones and spend thousands buying expensive new IP models. This smart box lets you plug your old phones straight in, connecting them directly flat to the internet for pocket money.
2. Supports Four Independent Voice Lines: Settle your business call volume clutter cleanly down one device box. With four independent physical telephone jacks located on the back panel, you can run separate telephone extensions for your sales desk, reception desk, accounting desk, and fax machine concurrently down one network cable.
3. Blazing Fast Dual Gigabit Router Ports: Standard cheap adapters slow down your network speed loops because their internet ports are outdated. This premium Grandstream unit houses two high-speed Gigabit Ethernet portsmeaning it routes massive digital web data rapidly down the line without causing performance bottlenecks for your computer towers.
4. Crystal-Clear HD Audio Quality: Stop putting up with blurry, echoing, or static-filled voice calls. The internal hardware layers feature advanced digital voice processing chips that automatically cancel out room echo, filter away line noise, and stabilize data transmission to deliver crisp, high-definition vocal clarity.
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#### Key Technical Specifications
* Brand: Grandstream Networks Genuine Original Equipment Manufacturer
* Model Lineup: HandyTone Series Advanced Multi-Port Gateway (Model: HT814)
* Equipment Class: 4-Port Analog Telephone Adapter (ATA) with Integrated NAT Router
* Host Voice Interface Panel: 4 x Standard RJ11 FXS Analog Telephone Ports
* Network Interface Telemetry: 2 x Fast RJ45 10/100/1000Mbps Self-Adaptive Gigabit Ethernet Ports
* Voice Processing Layer: Full hardware-level support for advanced HD Audio G.722, G.711, G.729, G.723, and G.726 audio codecs
* Data Rights Security Encryption: Secure automated provisioning utilizing TR-069, coupled with advanced TLS and SRTP data encryption protection tracks
* Unified Communications Profile: Supports up to 4 distinct SIP server account profiling configurations concurrently
* Telecommunications Fax Support: Integrated T.38 Fax-over-IP encoding protocol layer for absolute fax logging stability
* Power Infrastructure Requirements: External DC 12V power terminal caddy loop input track
#### Condition Report
* Voice & Network Circuits: 100 percent functional operational condition. Gateway boots up flawlessly, firmware environments load cleanly, Web GUI configuration portals are fully accessible, and all 4 FXS telephone ports pass active line continuity sweeps with clean ring current and zero voice latency drops under test loads.
* Output Interface Port Sockets: The copper contact pins inside all 4 RJ11 telephone sockets and both RJ45 Gigabit network slots are completely straight, polished, and free of dust blocks or oxidation.
* External Casing Framework: Excellent pre-owned condition. The midnight black structural composite casing, front-facing LED status indicator grid, and lower rubber mounting feet are solid, clean, and completely free of cracks or deep structural splits, displaying only standard minor hairline micro-scuffs.
#### Package Includes
* 1 x Grandstream HT814 4-Port FXS VoIP Gateway Analog Telephone Adapter Unit
* 1 x Matching External AC to DC 12V Power Adapter Supply Charger Block & Lead Wire
* 1 x Standard High-Speed RJ45 Ethernet Network Interface Cable Lead
#### Terms and Conditions
* Payment must be processed securely through Bob Pay within 48 hours of winning the listing or having a custom trade offer accepted.
* Given the sensitive electronic micro-circuits and electrostatic parameters of networking gear, the gateway box will be wrapped with extreme care inside multiple thick layers of high-impact anti-shock protective bubble wrap, boxed securely, and dispatched via courier within 2448 hours of cleared payment to guarantee safe transit.
* Please explicitly check your VoIP service provider compatibility parameters or network server configurations before completing your purchase or submitting an offer.
