Arris TM822

Solution

     

Modem Information

DOCSIS 3.0 Internet and Telephone Modem

8x4 channel bonding

Not compatible with future speed increases

Highest Service Level

Cox Business Internet 100

   

Front View

image of front of ARRIS TM822 modem

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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

image of back of ARRIS TM822 modem

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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

image of ARRIS TM822 MAC address

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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.
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.
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).

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