Yealink SIP-T48G Administrator's Manual page 90

Microsoft Lync Edition Administrator's Guide for SIP-T2_Series and T4_Series IP Phones
Procedure
NTP time server and time zone can be configured using the configuration files or locally.
Configuration File
Local
Details of Configuration Parameters:
Parameters
local_time.dhcp_time
Description:
Enables or disables the IP phone to update time with the offset time offered by the
DHCP server.
0-Disabled
1-Enabled
Note: It is only available to offset from GMT 0.
Web User Interface:
Settings->Time & Date->DHCP Time
Phone User Interface:
78
<MAC>.cfg
Web User Interface
Phone User Interface
Permitted Values
0 or 1
Configure DHCP time feature.
Parameters:
local_time.dhcp_time
Configure the NTP server, time
zone.
Parameters:
local_time.ntp_server1
local_time.ntp_server2
local_time.interval
local_time.time_zone
local_time.time_zone_name
Configure DHCP time feature.
Configure the NTP server, time
zone.
Navigate to:
http://<phoneIPAddress>/servlet
?p=settings-datetime&q=load
Configure DHCP time feature.
Configure the NTP server and
time zone.
Default
0