1. Introducció
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.
Si us plau, llegiu aquest manual detingudament abans d'utilitzar el dispositiu per garantir una configuració correcta i un rendiment òptim.
2. Informació de seguretat
- Utilitzeu només l'adaptador d'alimentació subministrat amb el dispositiu.
- No exposeu el dispositiu a l'aigua ni a la humitat.
- No col·loqueu el dispositiu a prop de fonts de calor o sota la llum solar directa.
- Assegureu-vos una ventilació adequada al voltant del dispositiu.
- No intenteu obrir ni modificar el dispositiu. Envieu totes les tasques de manteniment a personal qualificat.
- Mantingueu el dispositiu lluny dels nens.
3. Contingut del paquet
Comproveu que el vostre paquet contingui els elements següents:
- Grandstream HT841 Router Unit
- Adaptador d'alimentació universal
- Cable Ethernet
- Guia d'instal·lació ràpida

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. Descripció física
4.1 Tauler 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 Panell posterior
The rear panel contains all connectivity ports:
- Entrada d'alimentació: DC 12V power jack.
- Port WAN: Gigabit Ethernet port for connecting to the internet/modem.
- Port 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.
- Botó de restabliment: Recessed button for factory reset (use a paperclip).
5. Configuració
5.1 Connexió del dispositiu
- Connect one end of the Ethernet cable to the WAN port of the HT841 and the other end to your modem or internet source.
- Connecteu un altre cable Ethernet des del LAN 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).
- Connecteu l'adaptador d'alimentació a Entrada de potència 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 Configuració inicial
Per accedir al web interfície de configuració:
- Ensure your computer is connected to the HT841's LAN port.
- Obre a web navegador i introduïu l'adreça IP predeterminada (normalment 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. Funcionament del dispositiu
6.1 Funcions de trucada bàsiques
Once configured, the HT841 facilitates calls through connected analog phones and PSTN lines.
- Fer trucades: Pick up the connected analog phone, wait for a dial tone, and dial the desired number.
- Recepció de trucades: 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 interfície.
6.3 PoE Functionality
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. Manteniment
- Actualitzacions de firmware: Regularly check the Grandstream website for firmware updates to ensure optimal performance and security. Updates can be applied via the web interfície de configuració.
- Neteja: Feu servir un drap suau i sec per netejar el dispositiu. No utilitzeu netejadors líquids ni aerosols.
- Configuració de còpia de seguretat: Periodically back up your device configuration settings through the web interface to facilitate quick restoration if needed.
- Reiniciant: If the device experiences issues, try restarting it by unplugging the power adapter, waiting 10 seconds, and then plugging it back in.
8. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| Sense poder | L'adaptador de corrent no està connectat o està defectuós. | 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 interfície. 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. |
| Sense accés 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 Interface Inaccessible | 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. Especificacions
| Característica | Detall |
|---|---|
| Model | HT841 |
| Ports FXO | 4 (RJ11) |
| Ports FXS | 1 (RJ11) |
| Ports Ethernet | 2 x Gigabit Ethernet (1 WAN, 1 LAN with PoE) |
| Encaminador NAT | Sí |
| Suport PoE | Yes (on LAN port) |
| Dimensions | 7.48 x 4.33 x 1.18 polzades (190 x 110 x 30 mm) |
| Pes | 1.32 lliures (0.6 kg) |
| Sistema operatiu | Sistema operatiu Grandstream |
| Entrada de potència | 12V DC, 1.5A (included power adapter) |
| Dispositius compatibles | Ordinador portàtil, ordinador personal, telèfon intel·ligent, tauleta |
| Usos recomanats | Small Office, Home Office (SOHO) |
10. Garantia i Suport
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 Official Weblloc: www.grandstream.com
- Portal de suport: Consulteu l'oficial weblloc web per obtenir els recursos de suport més recents.





