Arris TM822 Touchstone Docsis 3.0 8×4 Ultra-High Speed Telephony Modem user guide

Arris TM822 Touchstone Docsis 3.0 8×4 Ultra-High Speed Telephony Modem


Modem Information DOCSIS 3.0 Internet and Telephone Modem 8×4 channel bonding Cox recommends a DOCSIS 3.1 modem or gateway	Highest Service Level Cox Business Internet 100

Modem Information

DOCSIS 3.0 Internet and Telephone Modem

8×4 channel bonding

Cox recommends a DOCSIS 3.1 modem or gateway

Highest Service Level

Cox Business Internet 100


Front View Click to enlarge.		The following indicators are found on the front of the modem. Power – Indicates if the modem is powered on. DS – Indicates downstream connectivity. US – Indicates upstream connectivity. Online – Indicates internet data transmission status. Link – Indicates Ethernet connectivity between the modem and computer. Tel 1 – Indicates the status of telephone line 1. Tel 2 – Indicates the status of telephone line 2. Battery – Indicates the battery status.

Back View Click to enlarge.		The following ports and buttons are found on the back of the modem. Telephone – Connect one or multiple phone lines to the modem using the grey Tel 1 / 2 and Tel 2 ports. Reset – Reboot the modem or reset the modem configuration settings. Use a pointed, non-metallic object to press this recessed button. Ethernet – Connect an Ethernet cable to this yellow port for a LAN connection, such as a computer or home network. Cable – Connect a coaxial cable line to this port. Power – Connect the supplied power cord to this port.

MAC Address Click to enlarge.		MAC addresses are written as 12 digits containing both letters and numbers (0-9, A-F). A MAC address is unique. The first six characters of the MAC address are unique to the manufacturer of the device. This information is usually found on a sticker located on the bottom of the modem.

Troubleshooting

The lights indicate the current status of your modem. To troubleshoot any connection problems, use the table below.

Modem Light	Status	Problem
Power	Off	No power. Verify all cable connections and try resetting the modem.
Power	Solid Green	None. The modem is receiving power.
DS	Flashing	The modem is not connected to the internet.
	Solid Yellow	None. The downstream channel is connected.
	Solid Green	None. The downstream channel is connected with bonded channels.
US	Flashing	The modem is not connected to the internet.
	Solid Yellow	None. The upstream channel is connected.
	Solid Green	None. The upstream channel is connected with bonded channels.
Online	Off	An internet connection is unavailable.
Online	Solid Green	None. The modem is connected to the internet.
Link	Off	Computer is not connected to the modem.
	Flashing	Computer activity is detected.
	Solid Yellow	None. A 10/100 BaseT Ethernet connection is established.
	Solid Green	None. A 1000 BaseT Ethernet connection is established.
Tel 1 / 2	Off	The telephone connection is disabled.
	Flashing	The telephone connection is off the hook.
	Solid Green	None. The telephone connection is established.
Battery	Off	The battery is missing or the MTA is not registered.
	Solid Green	None. The battery is functioning properly.
	Flashing	The battery is incompatible with the modem. Remove and replace with a compatible modem battery.

Manufacturer Resources

For more detailed technical information on the Arris TM822 modem, refer to the Arris_TM822_User_Guide [PDF].

References

User Manualmanual.tools

Published: August 10, 2021

Updated: February 11, 2023

Bonjour j’ai reçu le modem Arris TM822 et pouvez vous m’envoyer le plus d’informations que vous avez, moi je n’ai pas encore fait aucune essaie, Merci…

Marc chatelain asks Bonjour j'ai reçu le modem Arris TM822 et pouvez vous m'envoyer le plus d'informations que vous avez, moi je n'ai pas encore fait aucune essaie, Merci...

Manuals+ clarified question

Question

I received the Arris TM822 modem; can you provide more information and instructions before I try to set it up?

Answer

The Arris TM822 is a DOCSIS 3.0 Telephony Modem that supports both internet and phone services. Below is a summary of the key information to help you get started:

Rear Panel Connections: Connect your coaxial cable to the Cable port, your computer or router to the yellow Ethernet port, and your telephone to the grey Tel 1/2 port. Finally, connect the Power cord.
Front Panel Indicators: Once powered, the Power, DS (Downstream), US (Upstream), and Online lights should eventually turn solid green to indicate a successful internet connection.
Ethernet Link: The Link light will flash when there is data activity. A green light indicates a high-speed (1000 BaseT) connection, while yellow indicates a standard (10/100 BaseT) connection.
Resetting: If you encounter issues during setup, there is a recessed Reset button on the back that can be pressed with a small, non-metallic object to reboot the device.

For more detailed technical specifications and safety instructions, you can refer to the full Arris TM822 User Guide.

Read the full Q&A page

Questions & Answers

Use this section to ask about setup, compatibility, troubleshooting, or anything missing from this manual.

Marc chatelain says:

April 23, 2025 at 6:32 pm
Bonjour j’ai reçu le modem Arris TM822 et pouvez vous m’envoyer le plus d’informations que vous avez, moi je n’ai pas encore fait aucune essaie, Merci…
Marc chatelain asks Bonjour j'ai reçu le modem Arris TM822 et pouvez vous m'envoyer le plus d'informations que vous avez, moi je n'ai pas encore fait aucune essaie, Merci...

Manuals+ clarified question

Question

I received the Arris TM822 modem; can you provide more information and instructions before I try to set it up?
Answer

The Arris TM822 is a DOCSIS 3.0 Telephony Modem that supports both internet and phone services. Below is a summary of the key information to help you get started:

Rear Panel Connections: Connect your coaxial cable to the Cable port, your computer or router to the yellow Ethernet port, and your telephone to the grey Tel 1/2 port. Finally, connect the Power cord.

Front Panel Indicators: Once powered, the Power, DS (Downstream), US (Upstream), and Online lights should eventually turn solid green to indicate a successful internet connection.

Ethernet Link: The Link light will flash when there is data activity. A green light indicates a high-speed (1000 BaseT) connection, while yellow indicates a standard (10/100 BaseT) connection.

Resetting: If you encounter issues during setup, there is a recessed Reset button on the back that can be pressed with a small, non-metallic object to reboot the device.

For more detailed technical specifications and safety instructions, you can refer to the full Arris TM822 User Guide.
Read the full Q&A page

Arris TM822 Touchstone Docsis 3.0 8×4 Ultra-High Speed Telephony Modem user guide