Arris Tm3402 Docsis 3.1 Telephony Cable Modem User Manual (+ PDF)

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 Click to enlarge.		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 Click to enlarge.		The TM3402 has the following ports available on the back of the modem. TEL 1 / TEL 2 – Connects to home telephone wiring and to conventional telephones or fax machines.Note: If you only have one phone line, connect your telephone wiring into TEL 1. Reset – Use this button in the unlikely event that you want to restore the default factory settings. This button is recessed to prevent accidental resets of your modem. Ethernet – Provides internet access to a single device. Only one port is active at a time. Cable – Connect your coaxial cable line to this port. Power – Connect the supplied power cord to this port. 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.

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.

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	None. Device is powered on.
US/DS	Flashing	Not connected to the internet. Verify all cable connections and try resetting the modem.
US/DS	Solid	None. Connected to the Internet.
Online	Off	Internet is not available. Verify all cable connections and try resetting the modem.
Online	Solid	None. Internet is available.
Tel 1 Tel 2	Solid	None. Indicates service is enabled.
Tel 1 Tel 2	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.
Rear Panel Ethernet Ports	Amber	None. A 10/100 Mbps data connection is made.