SMC Cable modem

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Please follow these instructions to configure your SMC Cable modem router to work with PhonePower. These instructions are only if you are connecting your phone adapter to your router.





  • Open a web browser
  • Enter http://192.168.0.1 into the address bar and press enter
  • Log into the router. You will be prompted for a username and password.
  • The default username is (blank)
  • The default password is admin, smcadmin, or (blank)



Note: If you are unable to log into the SMC with the information shown above, you will need to contact your ISP to retrieve the administrator level username and password before proceeding.



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• Once you are logged in click on Firewall on the left menu bar.


Click to enlarge

• Check the box labeled Enable Firewall Module.



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• Click on DMZ on the left menu bar.
• Populate this field with the IP address that you obtained from the Grandstream in the first step.
• Click Apply.



Note: If you are unable to place a call after 15 minutes, or any other irregularities appear, please contact our support department for additional assistance.