The screenshots are from the T21P model. Other models will look slightly different. The settings will be the same, however.
Plug in the power supply unit.
Connect one end of the ethernet cable to the modem/router/network point and the other to the ‘internet’ port on the back of the phone.
Wait for the phone to boot up. (top red light will stop flashing)
Press the ‘OK’ button to establish the current IP Address.
Copy the shown IP address in your web browser on your PC.
Fill in: User: admin Password: admin
Go to Settings >> Auto Provision
At “Server URL” insert: http://provisioning.voys.co.za/cfg/yealink/t21/y000000000005.cfg
Click the ‘Autoprovision now’ button. The phone will update its configuration
Once the configuration is done. Click the 'Confirm' button
NOTE: If the phone has been used before, make sure you do a factory reset first. (Go to Settings >> Upgrade >> Reset to Factory Setting)
After the phone has rebooted, the User and Password will change to User: voys Password: freedom
Go to tab ‘Account’
Copy the settings from screenshot below
Note: You can find the corresponding ‘Extension number’, ‘VoIP account ID’ and ‘Password’ in Freedom >> Admin >> VoIP Account
Register status should now say ‘Registering’ and then ‘Registered’.
Go to tab 'Settings'
Make sure you give each extension in the network a unique Local SIP Port. For instance 5071 for extension 201, 5072 for extension 202 etc.
Ensure that the Local SIP Port and TLS SIP Port are not the same. For example, if the Local SIP Port is 5061, change the TLS SIP Port to 5060.
Click ‘Log out’ in the top right corner of the screen.