In order to disable the “Missed Call” notification on your Yealink VoIP phone follow these simple steps:

1. Press the OK button on the phone, this will show you the IP of that phone.
2. Plug the IP obtained in step 1 into your favorite web browser, and log into the phone. The default login info for Yealinks VoIP phones is “admin” (without the quotation marks) both for the username and the password.
3. Change the missed call parameter (under the account tab) to disabled as shown in the pic bellow. Hit the submit button and you are all set.