Consumers - TM822G/CT & TM822R: First Time Installation
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TM822G/CT & TM822R: First Time Installation

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Information

 
Question
How do I install my TM822 Modem for the first time?
Answer
When installing the TM822G/CT & TM822R for the first time, it is required to activate the TM822G/CT & TM822R for Internet access.  This document contains the follow sections: 
Prior to Installation
  1. Establish cable service with Comcast by contacting 1-800-Xfinity (1-800-934-6489).
     
  2. Check that the following items were included with the TM822G/CT & TM822R Wireless Voice Gateway.  
    • Power Cord
    • Ethernet Cable
    • Battery (sold separately for TM822R)
    • Quick Start Guide
    • Wall-Mounting Template and Instructions
    • Software License & Warranty Card
    • Support Information Card
  3. Locate the required information to activate XFINITY Internet service.
    • Comcast Account Number
    • Phone Number
    NOTE: The Comcast account number can be found on the billing statement, the Comcast app or the work order for the service.  Comcast account login credentials if it's previously created. 

Installation
  1. Connect a coax cable by hand tightening the connector to a cable wall outlet or a splitter and to the cable connector on the back of the TM822G/CT & TM822R.
     
  2. Connect a telephone cord of a single or two-line telephone to the telephone and to the Tel 1 port on the back of the TM822G/CT & TM822R.

    NOTE: Use the Tel 1 port to connect a two-line telephone. Contact Xfinity Consumer Support to activate the VoIP service.

     
  3. When adding a second telephone, connect a telephone cord of a single-line telephone to the telephone and to the Tel 2 port on the back of the TM822G/CT & TM822R.
     
  4. Connect the included Ethernet cable to a computer and connect the other end to the Ethernet port on the back of the TM822G/CT & TM822R.

    NOTE: Direct wired connection to the TM822G/CT & TM822R is recommended for first time activation process.  Connecting a Wi-Fi router to the TM822 is recommended when a wired connection is not available or when there are multiple client devices in the home network.

     
  5. Connect the included power cord to the port port on the back of the TM822G/CT & TM822R and to an electrical wall outlet that is not controlled by a wall switch.
     
  6. Allow the TM822G/CT & TM822R to power on and perform it's boot sequence.  The TM822G/CT & TM822R may reboot a few times during this process.

    NOTE: The TM822G/CT & TM822R can take up to 15 minutes to complete the boot-up sequence and connect to the Internet.

      User-added image

     
  7. Activation can occur when there is a solid green Online LED on the TM822G/CT & TM822R. 

    NOTE: If activation is unsuccessful, contact Xfinity customer support for further assistance and provide the following information:
    • Modem Manufacturer
    • Model Number
    • Serial Number
    • CMAC Address
    • EMAC Address (applicable for voice service)
    User-added image
     
Activation
  1. Launch a browser such as Internet Explorer, Chrome, or Safari.  Enter register.xfinity.com and press the Enter key to access the XFINITY Activation page.
 
  • On the Welcome to XFINITY Activation page, click the Continue button.
     
  • On the First, we need to authenticate your account page, enter the Comcast Account Number in the Account number field.
     
  • Enter phone number associated with the Comcast account in the Phone number field, then click the Continue button. 

    NOTE: The Continue button changes to "Please Wait" while it directs to the next page.

     
  • On the Set Up your username and password page, enter a username in the Username field.

    NOTE: If an previous account was created click the Sign in with your existing username link to proceed with the activation steps.

     
  • Enter a password in the Password field.
     
  • Reenter the password in the Confirm password field.
     
  • Click the Choose security question drop-down menu to select a security question.
     
  • Enter an answer for the security question selected in the Answer security question field, then click the Continue button. 
     
  • On the Your account had been created page, review the username and email address, then click the Continue button.
     
  • On the Connection established! You're almost done page, if desired to optimized the experience with XFINITY.com as the browser Home Page, check mark the box.  Otherwise click the Continue button.
     
  • The Your device is activated page will appear.  The TM822G/CT & TM822R will restart and may take up to 15 minutes to complete the boot-up sequence and connect to the Internet.
     

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