Yealink T21PE2 - Page 130

Administrator’s Guide for SIP-T2 Series/T4 Series/T5 Series/CP920 IP Phones
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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/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 <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/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 <y0000000000xx>.cfg
Description
It configures the IP address or the domain name of the NTP server 2.
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
Values
IP address or domain name
Default pool.ntp.org
Web UI Settings->Time&Date->Secondary Server
Phone UI T54S/T52S/T48S/T48G/T46S/T46G/T29G: