How do you change the volume on a landline phone?

To change the volume on a landline phone, follow these steps:

• Locate the volume control buttons on the side or bottom of the phone. They are usually marked with a speaker icon or the words 'volume up' and 'volume down'.
• Press the 'volume up' button to increase the volume or the 'volume down' button to decrease the volume.
• Test the volume by making a test call or playing a voicemail message.
• If the volume is still not at the desired level, adjust the volume settings on your phone service provider's website or contact their customer support for assistance.