Yealink SIP-T2 Series Administrator's Manual page 130

Administrator's Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
Description It configures the priority for the IP phone to use the NTP server address offered by the DHCP server.
0- High (use the NTP server address offered by the DHCP server preferentially)
Permitted
Values
1- Low (use the NTP server address configured manually preferentially)
Default
0
Value
Web UI Settings->Time&Date->NTP by DHCP Priority
Parameter local_time.dhcp_time
It enables or disables the IP phone to update time with the offset time offered by the DHCP server.
Description
Note: It is only available to offset from Greenwich Mean Time GMT 0.
Permitted
0-Disabled
1-Enabled
Values
Default 0
Web UI Settings->Time&Date->DHCP Time
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Basic->Time & Date->DHCP Time
Phone UI
T42G/T42S/T41P/T41S/T40P/T40G/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920:
For Gray-Screen: Menu->Settings->Basic Settings->Time&Date->DHCP Time
Parameter local_time.ntp_server1
It configures the IP address or the domain name of the NTP server 1.
Description
The IP phone will obtain the current time and date from the NTP server 1.
Permitted
IP address or domain name
Values
Default cn.pool.ntp.org
Web UI Settings->Time&Date->Primary Server
T54S/T52S/T48S/T48G/T46S/T46G/T29G:
Menu->Basic->Time & Date->General->SNTP Settings->NTP Server1
Phone UI
T42G/T42S/T41P/T41S/T40P/T40G/T27G/T23P/T23G/T21(P) E2/T19(P) E2/CP920:
Menu->Settings->Basic Settings->Time&Date->SNTP Settings->NTP Server1
Parameter local_time.ntp_server2
It configures the IP address or the domain name of the NTP server 2.
Description
If the NTP server 1 is not configured (configured by the parameter "local_time.ntp_server1") or cannot be
accessed, the IP phone will request the time and date from the NTP server 2.
Permitted
IP address or domain name
Values
Default pool.ntp.org
Web UI Settings->Time&Date->Secondary Server
Phone UI T54S/T52S/T48S/T48G/T46S/T46G/T29G:
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<y0000000000xx>.cfg
<y0000000000xx>.cfg
<y0000000000xx>.cfg