1. Log in to Guang Mao's management page through a browser: open a browser on your computer and enter Guang Mao's IP address to log in. If you are not sure about the IP address of Guang Mao, please consult the telecom customer service or consult your Guang Mao user manual.
2. Enter the "Equipment Information" page: After logging in successfully, you will see the management page of Guang Mao. Select "Device Information" in the left navigation bar, and then locate the "Internet Interface Status" tab.
3. Check the voice port status: Under the "Internet Interface Status" tab, if your light cat supports voice function, you will see a tab labeled "VoIP". Click this tab to view the related information, such as voice port number, registration status, etc.