In version 80 of the yealink firmware the trust_ctl changed from account.X.sip_trust_ctrl=1 to sip.trust_ctrl=1. Making this change in the provisioning files.
In version 80 of the yealink firmware the trust_ctl changed from account.X.sip_trust_ctrl=1 to sip.trust_ctrl=1. Making this change in the provisioning files.