There may also be times where you’ll want to remote factory reset a Yealink phone. Given that it is already remote provioning, add this to the auto provision rules:
features.show_action_uri_option = 0
That keeps the phone from asking for the user to accept the remote request. Then add to your /etc/asterisk/ombutel/pjsip_notify__50-1-events.conf file:
[default-yealink]
Content-Type=>message/sipfrag
Event=>ACTION-URI
Content=>key=Reset
Make sure the phone grabs the latest auto provisioning rules (ie: reboot it). Then you’ll be able to remote factory reset a Yealink phone. Probably want to make certain the phone is zero touch via the Yealink Remote Provisioning Management service or DHCP Option 66. This is helpful for clearing out gremlins from the phone, giving it a clean slate.
pjsip send notify default-yealink endpoint 100
