Yealink T27G

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series IP Phones
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NTP Configuration
The following table lists the parameters you can use to configure the NTP.
Parameter
local_time.manual_ntp_srv_prior
<y0000000000xx>.cfg
Description
It configures the priority for the IP phone to use the NTP server address offered by the
DHCP server.
Permitted
Values
0- High (use the NTP server address offered by the DHCP server preferentially)
1- Low (use the NTP server address configured manually preferentially)
Default
Value
0
Web UI
Settings->Time & Date->NTP by DHCP Priority
Parameter
local_time.dhcp_time
<y0000000000xx>.cfg
Description
It enables or disables the IP phone to update time with the offset time offered by the
DHCP server.
Note: It is only available to offset from Greenwich Mean Time GMT 0.
Permitted
Values
0-Disabled
1-Enabled
Default
0
Web UI
Settings->Time & Date->DHCP Time
Phone UI
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Basic->Time & Date->DHCP Time
T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:
For Gray-Screen: Menu->Settings->Basic Settings->Time & Date->DHCP Time
Parameter
local_time.ntp_server1
<y0000000000xx>.cfg
Description
It configures the IP address or the domain name of the NTP server 1.
The IP phone will obtain the current time and date from the NTP server 1.
Permitted
Values
IP address or domain name
Default
cn.pool.ntp.org
Web UI
Settings->Time & Date->Primary Server
Phone UI
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Basic->Time & Date->General->SNTP Settings->NTP Server1
T42G/T42S/T41P/T41S/T40P/T40G/T27P/T27G/T23P/T23G/T21(P) E2/T19(P) E2:
Menu->Settings->Basic Settings->Time & Date->SNTP Settings->NTP Server1