Yealink T46G Administrator's Manual page 259

Parameters
change take effect.
Web User Interface:
Network->Advanced->VLAN->DHCP VLAN->Option (1-255)
Phone User Interface:
Menu->Advanced (default password: admin)->Network->VLAN->DHCP VLAN->Option
To configure DHCP VLAN discovery via web user interface:
Click on Network->Advanced.
1.
In the VLAN block, select the desired value from the pull-down list of DHCP VLAN Active.
2.
Enter the desired option in the Option (1-255) field.
3.
The default option is 132.
Click Confirm to accept the change.
4.
A dialog box pops up to prompt that settings will take effect after a reboot.
Click OK to reboot the Skype for Business phone.
5.
To configure DHCP VLAN discovery via phone user interface:
Press Menu->Advanced (default password: admin)->Network->VLAN->DHCP VLAN.
1.
Press or , or the Switch soft key to select the desired value from the DHCP VLAN
2.
field.
Enter the desired option in the Option field.
3.
Press the Save soft key to accept the change.
4.
The Skype for Business phone reboots automatically to make settings effective after a
period of time.
Configuring Advanced Features
Permitted Values Default
245