Yealink SIP-T48G Administrator's Manual page 613

Parameters
Menu->Settings->Advanced Settings (default password: admin)
->Network->LLDP->LLDP Status
network.lldp.packet_interval
Description:
Configures the interval (in seconds) for the IP phone to send the LLDP (Linker Layer
Discovery Protocol) request.
Note: It works only if the value of the parameter "network.lldp.enable" is set to 1
(Enabled). If you change this parameter, the IP phone will reboot to make the
change take effect.
Web User Interface:
Network->Advanced->LLDP->Packet Interval (1~3600s)
Phone User Interface:
Menu->Settings->Advanced Settings (default password: admin)
->Network->LLDP->Packet Interval
To configure LLDP via web user interface:
1. Click on Network->Advanced.
2. In the LLDP block, select the desired value from the pull-down list of Active.
3. Enter the desired time interval in the Packet Interval (1~3600s) field.
4. Click Confirm to accept the change.
A dialog box pops up to prompt that settings will take effect after a reboot.
5. Click OK to reboot the phone.
To configure LLDP feature via phone user interface:
1. Press Menu->Settings->Advanced Settings (default password: admin)
->Network->LLDP->LLDP Status.
Configuring Advanced Features
Permitted Values
Integer from 1 to 3600
Default
60
593