Hello & Welcome to Just Answer,
I'm Greg and will do my best to assist with this issue today.
Sorry to hear of any issue you are having with your phones.
To help you with this issue, may I ask:
1) When you say "ringtone does not work", does that mean that the ringer does NOT sound with an incoming call?
2) How many TOTAL cordless handsets do you have with this system, and if more than one, do ALL handsets have this issue?
3) What landline phone service provider (phone company) you have for this phone line?
4) Can the phone still make OUTGOING calls successfully?
Please REPLY using the box below and the SEND button.
*** IMPORTANT NOTE: *** ANY requests for "additional services" (such as a phone call) are OPTIONAL and sent BY THE SITE AUTOMATICALLY (and not me), and I may NOT be available by phone.
Feel free to DECLINE (close) any such offers, and continue in this text/chat form.