Hello & Welcome,
Sorry to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) The FULL Model Number of the phone SYSTEM you are working with? If this is a cordless system, that model should be printed on a sticker on the bottom or back of the main base unit and START with KX-TG, but have NO "A" in it.
Thanks for that model.
Let me look that up for you.
OK - here is the process to set the ringer volume - on that handset.
1) Pick up the handset while the system is not in use (not on a call).
2) Press MENU # ***** 6 0
3) Use the UP or DOWN arrows to change the ringer volume to the desired setting.
4) Press SAVE.
5) Press OFF.
As an example, I have a link to a video that shows this same process. NOTE: The handset in your system may NOT match exactly (different number of buttons, etc.), but the process is the same.
Click Here --> https://www.youtube.com/watch?v=W0oYPkVGp2M
Please let me know if that works for you or if you have any more questions.
If this has answered your question(s), please take a moment to rate MY service level (Excellent is my goal) so that I get credit for helping you with this question.You should see some "stars" to do that, but please let me know if you do NOT see them (you may have to scroll UP or DOWN) or can not use them.
Thanks, ***** *****--. .-