Yealink Ghost Calls
End user complains of random ghost calls. Try the following.
- Log into the phone web interface
- Check firmware version - update to the latest if it is noticeably old
Change settings ref https://support.yealink.com/en/portal/knowledge/show?id=14404b55bd9e4ca05aba334b
- Navigate to "Features", "General Information"
- Allow IP Call - Disabled
- Accept SIP Trust Server Only - Enabled
- Navigate to "Features", "General Information"