1. Introduzione
This manual provides instructions for the installation, operation, and troubleshooting of your ARRIS Touchstone TM804G DOCSIS 3.0 Telephone Modem. The TM804G is designed to provide high-speed data access and up to four lines of Voice over IP (VoIP) telephone service over your cable network. It features DOCSIS 3.0 technology for enhanced internet speeds and reliability.
2. Caratteristiche principali
- DOCSIS 3.0 compliant for high-speed internet.
- Four (4) dedicated VoIP telephone ports.
- Supports download speeds up to 343 Mbps.
- Two independent 96MHz RF tuners.
- Ethernet connectivity for network devices.
3. Contenuto della confezione
Verifica che il pacco contenga i seguenti articoli:
- ARRIS Touchstone TM804G Telephone Modem
- Adattatore di alimentazione
- Cavo Ethernet
- Documentazione (Guida rapida, Informazioni sulla sicurezza)
Note: A backup battery is sold separately and is not included in the standard package.
4 Caratteristiche fisiche
4.1 Indicatori del pannello frontale
The front panel of the TM804G modem features several LED indicators that provide status information.

Figura 1: Davanti view of the ARRIS Touchstone TM804G Telephone Modem. This image shows the modem's black casing with ventilation holes on top and a row of green LED indicator lights on the right side of the front panel.
| Indicatore | Stato | Descrizione |
|---|---|---|
| ENERGIA | Verde solido | Il modem è acceso. |
| DS (a valle) | Verde solido | Downstream channel is connected. |
| USA (a monte) | Verde solido | Upstream channel is connected. |
| IN LINEA | Verde solido | The modem is registered and online. |
| COLLEGAMENTO | Verde solido | An Ethernet device is connected. |
| TEL1-4 | Verde solido | Telephone line is active. |
4.2 Porte del pannello posteriore
The rear panel provides all necessary connection ports for the modem.

Figura 2: Posteriore view of the ARRIS Touchstone TM804G Telephone Modem. This image displays the back of the modem, featuring a coaxial cable connector, four yellow Ethernet ports, two grey telephone ports (RJ-11), a USB port, a reset button, and the power input.
- COASSIALE: Connects to the cable wall outlet.
- ETHERNET (LAN): Four (4) RJ-45 ports for connecting to a computer or router.
- TEL1-4 (RJ-11): Four (4) telephone ports for connecting to telephones or a home telephone wiring system.
- USB: (Functionality may vary or be disabled by your service provider).
- RIPRISTINA: Recessed button to reset the modem to factory defaults (use with caution).
- ENERGIA: Si collega all'alimentatore.
5. Configurazione e installazione
Follow these steps to install your ARRIS Touchstone TM804G modem.
- Collegare il cavo coassiale: Connect one end of a coaxial cable to the COAXIAL port on the modem and the other end to a cable wall outlet. Ensure the connection is finger-tight.
- Collegare il cavo Ethernet: Connect one end of the Ethernet cable to one of the ETHERNET ports on the modem and the other end to your computer's network port or your wireless router's WAN/Internet port.
- Connect Telephone Lines: If using telephone service, connect your telephone(s) or home telephone wiring to the TEL1, TEL2, TEL3, or TEL4 ports on the modem using standard RJ-11 telephone cables.
- Collegare l'adattatore di alimentazione: Connect the power adapter to the POWER port on the modem and then plug the adapter into an electrical outlet.
- Accensione: The modem will automatically power on. Observe the front panel indicator lights. The POWER, DS, US, and ONLINE lights should eventually turn solid green, indicating a successful connection to the cable network and internet. The TEL lights will illuminate when telephone lines are active.
- Attiva il servizio: Contact your Internet Service Provider (ISP) to activate the modem. You will need to provide them with the MAC address and serial number, typically found on a label on the bottom or back of the modem.
Important: Do not connect the modem to a power outlet until all other connections are made.
6. Istruzioni per l'uso
Once the modem is successfully installed and activated, it operates automatically.
- Accesso ad Internet: Any device connected via Ethernet to the modem (or through a connected router) should have internet access once the ONLINE light is solid green.
- Servizio telefonico: If your service plan includes VoIP, connected telephones will have dial tone and function once the corresponding TEL lights are solid green.
- Stato di monitoraggio: Refer to the front panel LED indicators (Section 4.1) to monitor the modem's operational status.
7. Manutenzione
- Pulizia: Keep the modem clean and free of dust. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or aerosols.
- Ventilazione: Assicurarsi che il modem sia posizionato in un'area ben ventilata per evitare il surriscaldamento. Non ostruire le prese d'aria.
- Aggiornamenti del firmware: Gli aggiornamenti del firmware sono in genere gestiti automaticamente dal tuo provider di servizi Internet. Non tentare di aggiornare manualmente il firmware, a meno che non ti venga richiesto dal tuo provider.
- Restarting the Modem: If you experience connectivity issues, try restarting the modem by unplugging the power adapter for 10-15 seconds and then plugging it back in.
- Ripristino di fabbrica: The recessed RESET button on the rear panel can be used to restore factory default settings. This should only be done if instructed by your ISP, as it will erase all custom configurations. To perform a factory reset, use a paperclip to press and hold the RESET button for at least 10 seconds.
8. Risoluzione Dei Problemi
If you encounter problems with your modem, refer to the following common issues and solutions.
| Problema | Possibile causa | Soluzione |
|---|---|---|
| Nessun potere | Adattatore di alimentazione non collegato o presa difettosa. | Ensure power adapter is securely connected to the modem and a working electrical outlet. Check the POWER LED. |
| Nessun accesso a Internet | Coaxial cable loose, modem not activated, or ISP outage. |
|
| No Dial Tone on Phone | Telephone cable loose, TEL light off, or service issue. |
|
| Velocità Internet lenta | Network congestion, old router, or ISP issue. |
|
For further assistance, contact your Internet Service Provider's technical support.
9. Specifiche
| Numero di modello | TM804G |
| Standard DOCSIS | DOCSIS 3.0 |
| Internet Download Speed | Fino a 343 Mbps (dipende dall'ISP) |
| Porte VoIP | 4 (RJ-11) |
| Porte Ethernet | 4 (RJ-45) |
| Tecnologia di connettività | Etereo |
| Dimensioni (L x P x A) | Circa 11.81 x 9.13 x 2.56 pollici |
| Peso | Circa 2.16 libbre |
| ISP compatibili | Optimum, Mediacom (and others, check with your provider) |
10. Garanzia e supporto
This product is offered as an Amazon Renewed item. Amazon Renewed products are professionally inspected and tested to work and look like new. They are eligible for replacement or refund under the Amazon Renewed Guarantee if you are not satisfied with your purchase.
For technical support, troubleshooting, or service-related inquiries, please contact your Internet Service Provider (ISP) directly. Your ISP is responsible for the activation, configuration, and ongoing support of the modem on their network.





