The cable modem comes online when the Internet LED stops blinking and lights solid green.
This process might take up to 10 minutes.
5. Connect a computer to the cable modem.
Use the Ethernet cable that is provided in the package to connect a computer to the Ethernet port on
the cable modem.
6. Call Comcast XFINITY to activate your Internet service.
For information about how to activate your Internet service, see Activate Your Internet Service With
Comcast XFINITY on page 10.
After you install and activate the cable modem, you can disconnect the computer and
connect a router to the cable modem. For more information, see Connect Your Cable
Modem to a Router After Installation and Activation on page 12.
Note
7. Dial a number to place a test call.
To make calls, you need a voice service subscription with Comcast XFINITY.Note
Perform a Speed Test
To determine the accurate Internet speed, visit speedtest.xfinity.com/ and perform a speed test.
If your actual speed is lower than your subscribed speed, contact XFINITY.
Connect Your Cable Modem to a Router After Installation and
Activation
After you install the cable modem and activate your Internet service, you can disconnect the computer and
connect a router to the cable modem.
Figure 7. Connect the cable modem to a router
Hardware Setup
12
Voice Cable Modem
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