Yealink sip t28p remote BLF issue

Hello, I have some yelling sip-t28p phones deployed and have issue with BLF. On local network everything works just fine but if I have more than 1 phone in 1 remote location BLF would work only on 1 phone, and the rest would not show status.

Assuming this isn’t a firmware bug, it sounds like you need to enable MWI subscription on the phone.

Ill try but on a local network I don’t have this issues, only on remote ext