1. Introducció
The Grandstream HT818 is a powerful 8-port FXS VoIP Gateway designed to convert analog telephone and fax lines into a Voice over IP (VoIP) network. It features an integrated Gigabit NAT router, offering robust connectivity and high-quality voice communication. This device is ideal for users seeking to integrate traditional analog devices into modern IP-based communication systems, providing strong encryption, automated provisioning, and excellent network performance.
2. Informació de seguretat
Please read and follow these safety instructions carefully to prevent damage to the device and ensure user safety:
- Utilitzeu només l'adaptador d'alimentació subministrat amb el dispositiu.
- No exposeu el dispositiu a l'aigua ni a la humitat.
- Eviteu col·locar el dispositiu a prop de fonts de calor o sota la llum solar directa.
- Assegureu-vos una ventilació adequada per evitar el sobreescalfament.
- No intenteu obrir ni reparar el dispositiu vosaltres mateixos. Encarregueu totes les tasques de manteniment a personal qualificat.
3. Contingut del paquet
Comproveu que el vostre paquet contingui els elements següents:
- Grandstream HT818 8-Port FXS VoIP Gateway Unit
- Adaptador d'alimentació universal
- Cable Ethernet
- Guia d'instal·lació ràpida
4. Sobrecàrrega físicaview
The Grandstream HT818 features a compact design with clearly labeled ports for easy setup. Below is an image of the device, highlighting its key components.

Figura 1: Grandstream HT818 Analog Telephone Adapter. This image shows the device from a slightly angled perspective, revealing its compact white casing and the various ports on the rear panel, including the FXS ports, LAN/WAN Ethernet ports, and power input.
Indicadors del panell frontal:
- LED d'alimentació: Indica l'estat d'alimentació.
- LED d'Internet: Indicates WAN port status.
- LED LAN: Indica l'estat del port LAN.
- FXS Port LEDs (1-8): Indicate the status of each analog phone port.
Ports del panell posterior:
- FXS Ports (1-8): RJ11 ports for connecting analog telephones or fax machines.
- Port WAN: RJ45 Ethernet port for connecting to your internet router or modem.
- Port LAN: RJ45 Ethernet port for connecting to a local computer or network switch.
- Entrada d'alimentació: Per connectar l'adaptador de corrent subministrat.
- Botó de restabliment: S'utilitza per restaurar la configuració predeterminada de fàbrica.
5. Instruccions de configuració
Follow these steps to set up your Grandstream HT818:
- Connectar l'alimentació: Plug the provided power adapter into the HT818's power input port and then into a power outlet. The Power LED should illuminate.
- Connexió de xarxa:
- Connect one end of an Ethernet cable to the HT818's WAN port and the other end to an available LAN port on your internet router or modem. The Internet LED should light up.
- Optionally, connect a computer or network switch to the HT818's LAN port using another Ethernet cable. The LAN LED should light up.
- Connect Analog Devices: Plug your analog telephones or fax machines into the FXS ports (1-8) on the HT818 using standard RJ11 phone cables. The corresponding FXS port LEDs will illuminate when a device is connected and registered.
- Initial Configuration (Web Interface Access):
- Per accedir al web configuration interface, you will need the HT818's IP address. You can find this by connecting an analog phone to FXS port 1, dialing ***, then dialing 02. The IP address will be announced.
- Obre a web browser on a computer connected to the same network as the HT818 (either via the LAN port or your main router).
- Enter the HT818's IP address into the browser's address bar and press Enter.
- Log in using the default username (admin) and password (admin). You should change the default password for security.
- Configure your SIP account details provided by your VoIP service provider within the web interfície.
6. Instruccions de funcionament
Fer trucades:
- Pick up the handset of the analog phone connected to an FXS port. You should hear a dial tone.
- Marqueu el número de telèfon desitjat.
- Espereu que la trucada es connecti.
Recepció de trucades:
- When an incoming call arrives, the connected analog phone will ring.
- Agafa l'auricular per contestar la trucada.
Enviament de fax:
The HT818 supports T.38 Fax over IP, which is crucial for reliable fax transmissions over a VoIP network.
- Ensure your fax machine is connected to an FXS port.
- Verify that T.38 support is enabled and correctly configured in the HT818's web interface, as well as on your VoIP service provider's side.
- Follow your fax machine's instructions for sending and receiving faxes.
7. Manteniment
Actualització del firmware:
Regularly check for and install firmware updates from the Grandstream website to ensure optimal performance, security, and access to new features. Firmware upgrades are typically performed via the device's web interfície.
Configuració de còpia de seguretat i restauració:
It is recommended to regularly back up your device's configuration settings. This allows for quick restoration in case of accidental changes or device replacement. The backup/restore function is available in the web interfície.
Restabliment de fàbrica:
A factory reset will revert all settings to their default values. This can be useful for troubleshooting or preparing the device for redeployment. To perform a factory reset, press and hold the reset button on the rear panel for approximately 7-10 seconds until the LEDs flash.
8. Solució De Problemes
If you encounter issues with your HT818, refer to the following common problems and solutions:
- Sense to de marcatge:
- Assegureu-vos que l'adaptador de corrent estigui connectat correctament i que el LED d'alimentació estigui encès.
- Check that the Ethernet cable is properly connected to the WAN port and your router, and the Internet LED is active.
- Verify that the analog phone is correctly plugged into an FXS port and its corresponding LED is active.
- Confirm that your SIP account is registered successfully in the web interfície.
- Cannot Make or Receive Calls:
- Check SIP registration status in the web interface. If not registered, verify SIP server settings, username, and password.
- Ensure your internet connection is active and stable.
- Check firewall settings on your router; SIP ALG should generally be disabled.
- Confirm that the correct dial plan is configured for outgoing calls.
- Fax Transmission Issues:
- Ensure T.38 Fax over IP is enabled in the HT818's web configuration and supported by your VoIP service provider.
- Try reducing the fax machine's transmission speed.
- Check for any network congestion or packet loss that might affect fax quality.
- Problemes de connectivitat de xarxa:
- Verify all Ethernet cables are securely connected.
- Check the status of the LAN and WAN LEDs.
- Restart the HT818, your router, and your modem.
9. Especificacions
Below are the technical specifications for the Grandstream HT818:
| Característica | Descripció |
|---|---|
| Marca | Grandstream |
| Número de model | HT818 |
| Pes de l'article | 1.45 lliures (0.66 kg) |
| Dimensions del producte | 7.1 x 4.7 x 1.4 polzades (18.03 x 11.94 x 3.56 cm) |
| Interfície del maquinari | Ethernet |
| Dispositius compatibles | Analog Telephone, Fax Machine |
| Protocol d'enllaç de dades | Gigabit Ethernet |
| Velocitat de transferència de dades | 1000 megabits per segon |
| Fabricant | Grandstream Networks, Inc |
| UPC | 694727370241 |
| Primer disponible | 25 d'abril de 2018 |
10. Garantia i Suport
Grandstream products are typically covered by a limited warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Grandstream website. For technical support, firmware updates, and additional resources, please visit the Grandstream support portal or contact your reseller.





