Configuring Advanced Features189Option Configuration MethodsPhone User InterfaceDaylight Saving TimeConfiguration FilesWeb User InterfaceNTP Time ServerA time server is a computer server that reads the actual time from a reference clock anddistributes this information to the clients in a network. The Network Time Protocol (NTP) is themost widely used protocol that distributes and synchronizes time in the network.The IP phones synchronize the time and date automatically from the NTP time server by default.The NTP time server address can be offered by the DHCP server or configured manually. NTP byDHCP Priority feature can configure the priority for the IP phone to use the NTP time serveraddress offered by the DHCP server or configured manually.Time ZoneA time zone is a region on Earth that has a uniform standard time. It is convenient for areas inclose commercial or other communication to keep the same time. When configuring the IPphone to obtain the time and date from the NTP time server, you must set the time zone.ProcedureNTP time server and time zone can be configured using the following methods.Central Provisioning(Configuration File).cfgConfigure NTP by DHCP priorityfeature and DHCP time feature.Parameters:local_time.manual_ntp_srv_priorlocal_time.dhcp_timeConfigure the NTP server, timezone.Parameters:local_time.ntp_server1local_time.ntp_server2local_time.intervallocal_time.time_zonelocal_time.time_zone_nameWeb User InterfaceConfigure NTP by DHCP priorityfeature and DHCP time feature.Configure the NTP server, time
