1. Introducción
This manual provides detailed instructions for the installation, configuration, and operation of the Grandstream HT841 4 FXO 1 FXS 2 GIGE POE NAT Router. The HT841 is designed to provide advanced routing capabilities with integrated telephony features, including 4 FXO ports for connecting to analog telephone lines, 1 FXS port for connecting an analog phone or fax machine, and 2 Gigabit Ethernet ports with Power over Ethernet (PoE) support. It also features NAT routing for network address translation.
Lea este manual detenidamente antes de utilizar el dispositivo para garantizar una configuración adecuada y un rendimiento óptimo.
2. Información de seguridad
- Utilice únicamente el adaptador de corriente suministrado con el dispositivo.
- No exponga el dispositivo al agua ni a la humedad.
- No coloque el dispositivo cerca de fuentes de calor ni bajo la luz solar directa.
- Asegúrese de que haya una ventilación adecuada alrededor del dispositivo.
- No intente abrir ni modificar el dispositivo. Todas las reparaciones deben ser realizadas por personal cualificado.
- Mantenga el dispositivo fuera del alcance de los niños.
3. Contenido del paquete
Verifique que su paquete contenga los siguientes elementos:
- Grandstream HT841 Router Unit
- Adaptador de corriente universal
- Cable Ethernet
- Guía de instalación rápida

Image 1: Grandstream HT841 Router with its power adapter and Ethernet cable. The router is a compact black device with multiple ports on the back.
4. Descripción física
4.1 Panel frontal
The front panel features LED indicators for power, network activity, and FXO/FXS port status. These LEDs provide a quick visual status of the device's operation.
4.2 Panel trasero
The rear panel contains all connectivity ports:
- Entrada de energía: Conector de alimentación DC 12 V.
- Puerto WAN: Gigabit Ethernet port for connecting to the internet/modem.
- Puerto LAN: Gigabit Ethernet port with PoE support for connecting to local network devices.
- FXO Ports (4): RJ11 ports for connecting to analog PSTN lines.
- FXS Port (1): RJ11 port for connecting an analog telephone or fax machine.
- Botón de reinicio: Recessed button for factory reset (use a paperclip).
5. Configuración
5.1 Conexión del dispositivo
- Conecte un extremo del cable Ethernet al PÁLIDO port of the HT841 and the other end to your modem or internet source.
- Conecte otro cable Ethernet desde el Red local port of the HT841 to your computer or a network switch.
- Connect your analog telephone lines to the Fxo ports (RJ11).
- Connect an analog phone or fax machine to the FxS port (RJ11).
- Conecte el adaptador de corriente a la Entrada de potencia jack and then plug it into a power outlet.
- Wait for the device to boot up. The LED indicators on the front panel will illuminate.
5.2 Configuración inicial
Para acceder a la web interfaz de configuración:
- Ensure your computer is connected to the HT841's LAN port.
- Abrir una web navegador e ingrese la dirección IP predeterminada (normalmente http://192.168.2.1 or http://192.168.0.1). Refer to the Quick Installation Guide for the exact default IP.
- Enter the default username (admin) and password (admin).
- Follow the on-screen prompts to configure basic network settings, SIP accounts, and FXO/FXS port parameters.
6. Operación del dispositivo
6.1 Funciones básicas de llamada
Once configured, the HT841 facilitates calls through connected analog phones and PSTN lines.
- Haciendo llamadas: Pick up the connected analog phone, wait for a dial tone, and dial the desired number.
- Recibir llamadas: The connected analog phone will ring for incoming calls. Pick up the handset to answer.
6.2 Network Routing
The HT841 functions as a NAT router, providing internet access to devices connected to its LAN port. It supports standard routing protocols and firewall features configurable via the web interfaz.
6.3 Funcionalidad PoE
The LAN port supports Power over Ethernet (PoE), allowing it to power compatible devices such as IP phones or access points directly through the Ethernet cable, reducing cable clutter.
7. Mantenimiento
- Actualizaciones de firmware: Revise regularmente el Grandstream website for firmware updates to ensure optimal performance and security. Updates can be applied via the web interfaz de configuración.
- Limpieza: Utilice un paño suave y seco para limpiar el dispositivo. No utilice limpiadores líquidos ni aerosoles.
- Configuración de respaldo: Periodically back up your device configuration settings through the web interface to facilitate quick restoration if needed.
- Reiniciando: If the device experiences issues, try restarting it by unplugging the power adapter, waiting 10 seconds, and then plugging it back in.
8. Solución de problemas
| Problema | Posible causa | Solución |
|---|---|---|
| Sin poder | Adaptador de corriente no conectado o defectuoso. | Ensure power adapter is securely connected to the device and a working power outlet. Test with another outlet if possible. |
| No Dial Tone on FXS Port | Phone not connected, SIP account not registered, or incorrect configuration. | Check phone connection. Verify SIP account registration status in the web interfaz. Review FXS port configuration. |
| Cannot Make/Receive Calls via FXO | PSTN line not connected, FXO port not configured, or line impedance mismatch. | Ensure PSTN lines are connected to FXO ports. Configure FXO ports in the web interface. Adjust line impedance settings if necessary. |
| Sin acceso a Internet | WAN connection issue, incorrect network settings, or modem problem. | Check WAN cable connection. Verify WAN settings (DHCP, Static IP) in the web interface. Restart modem and router. |
| Web Interfaz inaccesible | Incorrect IP address, network connectivity issue, or device malfunction. | Ensure computer is on the same subnet as the router. Try default IP address. Check LAN cable. Perform a factory reset if all else fails (note: this will erase all configurations). |
9. Especificaciones
| Característica | Detalle |
|---|---|
| Modelo | HT841 |
| Puertos FXO | 4 (RJ11) |
| Puertos FXS | 1 (RJ11) |
| Puertos Ethernet | 2 x Gigabit Ethernet (1 WAN, 1 LAN with PoE) |
| Enrutador NAT | Sí |
| Compatibilidad con PoE | Yes (on LAN port) |
| Dimensiones | 7.48 x 4.33 x 1.18 pulgadas (190 x 110 x 30 mm) |
| Peso | 1.32 libras (0.6 kg) |
| Sistema operativo | Sistema operativo Grandstream |
| Entrada de potencia | 12V DC, 1.5A (included power adapter) |
| Dispositivos compatibles | Portátil, computadora personal, teléfono inteligente, tableta |
| Usos recomendados | Small Office, Home Office (SOHO) |
10. Garantía y soporte
For warranty information, please refer to the warranty card included in your product packaging or visit the official Grandstream website. Technical support can be accessed through the Grandstream support portal, which offers FAQs, documentation, and contact options for assistance.
- Grandstream Oficial Websitio: www.grandstream.com
- Portal de soporte: Consulte al funcionario website for the latest support resources.





