Arris TM3402 DOCSIS 3.1 Telephony Cable Modem
Modem InformationDOCSIS 3.1 Internet and Telephone Modem 32×8 channel bonding |
Highest Service LevelGigablast |
Combination Internet and Telephone modems purchased or received in new or used condition from third-party retailers are not certified for use with the Cox network.
Front View
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After the cable modem is successfully registered on the network, the Power, US/DS, and Online indicators illuminate continuously to indicate that the modem is online and fully operational. | |
Back View
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The TM3402 has the following ports available on the back of the modem.
For modems with four Ethernet ports, only plug devices into Ethernet port 1 because only one port is active and additional devices plugged into the other ports will not receive Internet access. For modems with a sticker covering up the extra ports, use the accessible port only. Do not remove the sticker. |
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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. |
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 | None. Device is powered on. | |
| US/DS
|
Flashing | Not connected to the internet. Verify all cable connections and try resetting the modem. |
| Solid | None. Connected to the Internet. | |
| Online
|
Off | Internet is not available. Verify all cable connections and try resetting the modem. |
| Solid | None. Internet is available. | |
| Tel 1 Tel 2  |
Solid | None. Indicates service is enabled. |
| Flashing | None. Line 1 or Line 2 is in use. | |
| Battery
|
Solid green | None. AC power is present. |
| Slow pulsing green | None. Running on battery power. | |
| Solid red | Battery or charging error. AC power is present. | |
| Slow pulsing red | Battery or charging error. Running on battery power. | |
| Off | No battery backup is available or the battery is not installed. | |
| Rear Panel Ethernet Ports | Green | None. A GigE data connection is made. |
| Amber | None. A 10/100 Mbps data connection is made. |
Manufacturer Resources
For more detailed technical information on the TM3402, use the resources below.
References
- User Manualmanual.tools
Published: August 10, 2021
Updated: February 11, 2023
my Arris TM3402A keeps dropping internet to my TV cable box, our wireless printer and our generator. It was installed 2 years ago by a cable company that was sold so I can’t get assistance from them. currently I can’t watch internet channels.
Why is my Arris TM3402A modem dropping the internet connection to my TV, printer, and other devices?
To resolve the intermittent connection drops on your Arris TM3402, please follow these troubleshooting steps based on the manual:
Since your original provider was sold, you may need to contact your current internet service provider to ensure the modem is correctly provisioned on their new network, as signal levels may have changed.
Read the full Q&A page