A:
Lindz - Here's the procedure on how to adjust the ringer volume on the VTech CS6709 accessory cordless handset.
1. Press MENU when the handset is not in use.
2. Press ▼ to highlight Ringers, and then press SELECT.
3. Press ▼ to select Ringer volume, and then press SELECT.
4. Press ▲ or ▼ to sample each volume level.
5. Press SELECT to save your selection. You will hear a confirmation tone.
Hope this helps. Thank you! - VTech Support