1. Introducción
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. Información de seguridad
Please read and follow these safety instructions carefully to prevent damage to the device and ensure user safety:
- Utilice únicamente el adaptador de corriente proporcionado con el dispositivo.
- No exponga el dispositivo al agua ni a la humedad.
- Evite colocar el dispositivo cerca de fuentes de calor o bajo la luz solar directa.
- Asegúrese de que haya una ventilación adecuada para evitar el sobrecalentamiento.
- No intente abrir ni reparar el dispositivo usted mismo. Encargue cualquier reparación a personal cualificado.
3. Contenido del paquete
Verifique que su paquete contenga los siguientes elementos:
- Grandstream HT818 8-Port FXS VoIP Gateway Unit
- Adaptador de corriente universal
- Cable Ethernet
- Guía de instalación rápida
4. Exceso de físicoview
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.
Indicadores del panel frontal:
- LED de encendido: Indica el estado de energía.
- LED de Internet: Indicates WAN port status.
- LED de LAN: Indica el estado del puerto LAN.
- FXS Port LEDs (1-8): Indicate the status of each analog phone port.
Puertos del panel trasero:
- FXS Ports (1-8): RJ11 ports for connecting analog telephones or fax machines.
- Puerto WAN: RJ45 Ethernet port for connecting to your internet router or modem.
- Puerto LAN: RJ45 Ethernet port for connecting to a local computer or network switch.
- Entrada de energía: Para conectar el adaptador de corriente proporcionado.
- Botón de reinicio: Se utiliza para restaurar la configuración predeterminada de fábrica.
5. Instrucciones de configuración
Siga estos pasos para configurar su Grandstream HT818:
- Conecte la electricidad: Plug the provided power adapter into the HT818's power input port and then into a power outlet. The Power LED should illuminate.
- Conexión de red:
- Connect one end of an Ethernet cable to the HT818's PÁLIDO 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 Red local port using another Ethernet cable. The LAN LED should light up.
- Conectar dispositivos analógicos: 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):
- Para acceder a la 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.
- Abrir una 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 interfaz.
6. Instrucciones de funcionamiento
Haciendo llamadas:
- Pick up the handset of the analog phone connected to an FXS port. You should hear a dial tone.
- Marque el número de teléfono deseado.
- Espere a que la llamada se conecte.
Recibir llamadas:
- When an incoming call arrives, the connected analog phone will ring.
- Levante el auricular para contestar la llamada.
Envío por 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. Mantenimiento
Actualización de 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 interfaz.
Configuración de copia de seguridad y restauración:
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 interfaz.
Restablecimiento de fábrica:
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. Solución de problemas
Si tiene problemas con su HT818, consulte los siguientes problemas y soluciones comunes:
- No hay tono de marcado:
- Ensure the power adapter is securely connected and the Power LED is on.
- 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 interfaz.
- No puedo realizar ni recibir llamadas:
- Verifique el estado del registro SIP en el web interface. If not registered, verify SIP server settings, username, and password.
- Asegúrese de que su conexión a Internet esté activa y estable.
- 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.
- Problemas de conectividad de red:
- Verifique que todos los cables Ethernet estén conectados de forma segura.
- Check the status of the LAN and WAN LEDs.
- Restart the HT818, your router, and your modem.
9. Especificaciones
Below are the technical specifications for the Grandstream HT818:
| Característica | Descripción |
|---|---|
| Marca | Gran corriente |
| Número de modelo | HT818 |
| Peso del artículo | 1.45 libras (0.66 kg) |
| Dimensiones del producto | 7.1 x 4.7 x 1.4 pulgadas (18.03 x 11.94 x 3.56 cm) |
| Interfaz de hardware | Ethernet |
| Dispositivos compatibles | Analog Telephone, Fax Machine |
| Protocolo de enlace de datos | Gigabit Ethernet |
| Velocidad de transferencia de datos | 1000 megabits por segundo |
| Fabricante | Grandstream Networks, Inc |
| Código Postal | 694727370241 |
| Primero disponible | 25 de abril de 2018 |
10. Garantía y soporte
Los productos Grandstream suelen estar cubiertos por una garantía limitada. Para conocer los términos y condiciones específicos de la garantía, consulte la tarjeta de garantía incluida con su producto o visite el sitio web oficial de Grandstream. website. For technical support, firmware updates, and additional resources, please visit the Grandstream support portal or contact your reseller.





