Yealink SIP-T4X Provisioning Manual page 32

Yealink SIP-T4X IP Phones Auto Provisioning Guide
custom DHCP option, make sure the DHCP option is set properly.
The custom option must be in accordance with the one defined in the DHCP server. For
more information on configuring a DHCP server, refer to
page 44.
To configure the DHCP option via web user interface:
1. Click on Settings->Auto Provision.
2. Mark the On radio box in the DHCP Active field.
3. Enter the desired value in the Custom Option (128~254) field.
4. Enter the desired value in the DHCP Option Value field.
The default value is yealink.
5. Click Confirm to accept the change.
Yealink IP phones support to obtain the provisioning server address from the phone
flash. To obtain the provisioning server address by reading the phone flash, make sure
the configuration is set properly.
To configure the Phone Flash via web user interface:
1. Click on Settings->Auto Provision.
26
Configuring an HTTP Server on