1. Introduzione
The Grandstream HT802 V2 is a 2-port Analog Telephone Adapter (ATA) designed to provide a high-quality and manageable IP telephony solution for both residential and office environments. This device allows users to integrate traditional analog phones with Voice over IP (VoIP) services, leveraging advanced VoIP functionality, security protection, and auto-provisioning options.
Le caratteristiche principali includono:
- Supports 2 SIP profiles through 2 FXS ports and a single 10/100Mbps network port.
- TLS and SRTP security encryption technology for call and account protection.
- Automated provisioning options, including TR-069 and XML config files.
- LED indicators for Power, Network, Phone 1, and Phone 2 status.
- Supports 3-way voice conferencing.
- Failover SIP server functionality for automatic switching to a secondary server.
- Supports T.38 Fax for Fax-over-IP.
- Compatible with a wide range of caller ID formats.
- Zero Configuration provisioning with Grandstream’s UCM series of IP PBXs.

Figura 1: Fronte view of the Grandstream HT802 V2 ATA.
2. Guida all'installazione
2.1 Contenuto della confezione
Assicurati che tutti gli articoli siano presenti nel pacco:
- Grandstream HT802 V2 Analog Telephone Adapter
- Adattatore di alimentazione
- Ethernet cable (may vary by region/retailer)
- Quick Installation Guide (may vary by region/retailer)
2.2 connessione fisica
Follow these steps to connect your HT802 V2:
- Connetti alla rete: Insert one end of an Ethernet cable into the NETTO port on the back of the HT802 V2 and the other end into an available LAN port on your router or network switch.
- Connect Analog Phones: Connect your analog telephone(s) to the TELEFONO1 e/o TELEFONO2 FXS ports on the back of the HT802 V2 using standard RJ11 phone cables.
- Connetti alimentazione: Plug the power adapter into the power port on the back of the HT802 V2, then plug the adapter into a power outlet.
- Accensione: The device will automatically power on. Observe the LED indicators on the top panel. The ENERGIA LED should be solid blue, and the NETTO LED should indicate network activity.

Figura 2: Posteriore view of the HT802 V2, highlighting the NET, PHONE1, PHONE2, and power ports.
2.3 Configurazione iniziale
After physical connection, the device will attempt to obtain an IP address via DHCP. To access the web interfaccia di configurazione:
- Trova l'indirizzo IP: Connect an analog phone to the PHONE1 port. Dial *** (three asterisks) to access the IVR menu. Press 02 to hear the device's IP address.
- Accesso Web Interfaccia: Aprire un web browser on a computer connected to the same network. Enter the IP address obtained in step 1 into the browser's address bar.
- Login: The default username is "admin" and the default password is "admin". It is highly recommended to change the default password immediately for security.
- Configure SIP Account: Navigate to the FXS Port 1/2 settings to configure your SIP account details provided by your VoIP service provider. This typically includes SIP Server, SIP User ID, Authenticate ID, and Authenticate Password.
3. Istruzioni per l'uso
3.1 Effettuare e ricevere chiamate
- Effettuare una chiamata: Pick up the handset of your analog phone. You should hear a dial tone. Dial the desired phone number and wait for the call to connect.
- Ricevere una chiamata: When your phone rings, pick up the handset to answer the call.
3.2 Conferenza a 3 vie
Per avviare una teleconferenza a 3:
- Stabilire una chiamata con il primo interlocutore.
- Press the Flash button (or R button) on your analog phone. You will hear a new dial tone.
- Componi il numero del secondo interlocutore.
- Once the second party answers, press the Flash button (or R button) again to join all three parties into a conference call.
3.3 Fax-over-IP (T.38)
The HT802 V2 supports T.38 Fax for reliable Fax-over-IP transmission. Ensure your VoIP service provider also supports T.38 and that the feature is enabled in the device's web configuration under the FXS Port settings.
4. Manutenzione
4.1 Aggiornamenti firmware
Grandstream regularly releases firmware updates to improve performance, add features, and address security vulnerabilities. It is recommended to periodically check the Grandstream website for the latest firmware for your HT802 V2 and follow their instructions for updating.
4.2 Ripristino delle impostazioni di fabbrica
A factory reset will restore the device to its default settings, erasing all custom configurations. This can be useful for troubleshooting or preparing the device for redeployment.
- Tramite Web Interfaccia: Navigate to the "Maintenance" or "System" section in the web configuration interface and look for a "Factory Reset" option.
- Tramite il pulsante di reset: With the device powered on, use a paperclip or a similar pointed object to press and hold the RESET button (located on the back panel, next to the power port) for approximately 7-10 seconds. Release the button when the LEDs start flashing. The device will reboot with factory default settings.
5. Risoluzione Dei Problemi
This section addresses common issues you might encounter with your HT802 V2.
5.1 Stato dell'indicatore LED
| GUIDATO | Stato | Descrizione |
|---|---|---|
| ENERGIA | Blu solido | Il dispositivo è acceso e funziona normalmente. |
| NETTO | Blu solido | Network connection is established. |
| NETTO | Blu lampeggiante | Attività di rete. |
| PHONE1/PHONE2 | Blu solido | FXS port is registered to a SIP server. |
| PHONE1/PHONE2 | Blu lampeggiante | FXS port is off-hook or in use. |
5.2 Problemi comuni
- Nessun segnale di linea:
- Controllare se il ENERGIA E NETTO LEDs are solid blue.
- Verify the Ethernet cable connection to your router.
- Ensure the analog phone is correctly plugged into the FXS port.
- Confirm SIP account registration status in the web interface (PHONE LED should be solid blue).
- Impossibile effettuare/ricevere chiamate:
- Check SIP account configuration (SIP server, user ID, password).
- Verificare la connettività di rete.
- Ensure your VoIP service is active and not experiencing outages.
- Check firewall settings if calls are blocked.
- Poor Voice Quality:
- Controlla la velocità e la stabilità della tua connessione Internet.
- Ensure Quality of Service (QoS) is properly configured on your router, prioritizing VoIP traffic.
- Prova un cavo Ethernet diverso.
6. Specifiche
Below are the technical specifications for the Grandstream HT802 V2:
| Caratteristica | Dettaglio |
|---|---|
| Numero di modello | HT802 V2 |
| Dimensioni del pacco | 7.6 x 5.51 x 2.72 pollici |
| Peso dell'articolo | 10.9 once |
| ASIN | B0DR9MR18Y |
| Produttore | Grande flusso |
| Porti | 2 FXS ports, 1 10/100Mbps Ethernet port |
| Sicurezza | TLS and SRTP encryption |
| Approvvigionamento | TR-069, XML config files, Zero Configuration with UCM series |
| Supporto fax | T.38 Fax-over-IP |
7. Garanzia e supporto
For detailed warranty information, please refer to the warranty card included with your product or visit the official Grandstream website. Grandstream provides technical support and resources for their products.
Risorse online:
- Grandstream Ufficiale Websito: www.grandstream.com
- Pagina di supporto al prodotto: Look for the HT802 V2 on the Grandstream support section for FAQs, firmware, and additional documentation.
When contacting support, please have your device's serial number and purchase information ready.