How to Find Your Arris CM MAC Number for Comcast Internet and Phone Service

If you're looking to save money by using your own modem instead of renting one from Comcast, you might be surprised to find that many representatives are unaware that certain models, like the TG852G, can be used for both internet and phone service. After dealing with seven different Comcast reps, including supervisors, I finally got a knowledgeable tech-support guy who enabled my modem for both services.

To get started, you'll need to find your Arris CM MAC number, which is unique to your router. The process varies depending on the make and model of your device, but it's not as complicated as learning how to disable NAT acceleration in your router. Here are the steps to find your MAC address:

1. Look around the settings until you find something like 'About This Device.' The MAC address should be listed there, though each router differs.

2. Check the router itself for a sticker containing the default network name, default password, and IP address. Your MAC address might be listed alongside this information.

3. If you can't find the MAC address on the router or in the settings, try accessing the router's admin panel by inputting its IP address into the address bar of a traditional web browser.

Once you have your MAC address, you can use it to block the device from the network entirely or allocate bandwidth restrictions. To set up your Arris modem for both internet and phone service, follow these additional steps:

1. Ensure that your network is operating properly by connecting a modem to the router via Ethernet cable and verifying a strong wireless signal with an Internet connection.

2. Access the router's settings page or admin panel and look for options related to MAC address filtering.

With this information, you can set up your Arris CM modem for both internet and phone service and avoid Comcast's $7/month modem rental fee.

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