How to blacklist landline?

The steps to set up a landline blacklist usually include the following aspects:

1. Enter the setting interface. Different brands of landlines may have different settings, but you can usually enter the setting interface by pressing the "Settings" or "Menu" key.

2. Find the blacklist option. In the setting interface, you need to find the "blacklist" option, which is usually located in "Call Settings" or "Security Settings".

3. Add the blacklist number. In the "Blacklist" option, you can manually enter the phone number to be blocked, or choose from the address book.

4. Save the settings. After adding numbers, you need to save the settings for these changes to take effect. In addition, some landline phones may support adding blacklists through WeChat official accounts. The specific operation steps may include opening the official WeChat account, entering the blacklist setting page, adding the number and saving the settings. Please note that the specific operation steps may be different for different brands and models of landlines. If the landline phone has a specific blacklist function, there will generally be a corresponding manual or user manual to provide detailed setting instructions. If you are not sure how to operate, it is recommended to contact the telecom company or consult the relevant instructions.