Main Page > RUT Routers > RUT900 > RUT900 Manual > RUT900 WebUI > RUT900 Services section > RUT900 NTP

The information in this page is updated in accordance with firmware version .
Note: click here for the old style WebUI (FW version RUT9XX_R_00.06.09.5 and earlier) user manual page.


Network Time Protocol (NTP) is a networking protocol for clock synchronization between computer systems over packet-switched, variable-latency data networks. This chapter is an overview of the NTP section for RUT900 devices.


The Time Synchronization section lets you select time zone and synchronize the time.

The figure below is an example of the Time Synchronization section and the table below provides information about the fields contained in that section:

Networking rutos ntp general gps 0.png

Field Value Description
Current system time time; default: none Current local time of the device.
Sync with browser -(interactive button) Click to synchronize device time and time zone to browsers, if your device time or time zone is not correct.
Time zone time zone; default: UTC The device will sync time in accordance with the selected time zone.


This section is used to configure NTP client, server and time servers.

Time Synchronization

Networking rutos ntp ntp client mobile 1 v2.png

Field Value Description
Enable NTP Client off | on; default: on Turns NTP on or off.
Save time to flash off | on; default: off Saves last synchronized time to flash memory.
Force Servers off | on; default: off Forces unreliable NTP servers.
Update interval (in seconds) integer; default: 86400 How often the device will update the time.
Offset frequency integer; default: 0 Adjusts the minor drift of the clock so that it will run more accurately.
Count of time synchronizations integer; default: none The amount of times the device will perform time synchronizations. Leave empty in order to set to infinite.
Operator Station Synchronization off | on; default: off Synchronizes time with mobile operator's base station.
Timezone Synchronization off | on; default: off Sync time data with mobile operator.
Hostname ip | url; default: NTP servers that this device uses to sync time.

NTP Server

The device can also act as an NTP Server, providing clock synchronization to other devices in the network. From this section you can turn this feature on or off:

Networking rutos ntp ntp server.png


The NTPD program is an operating system daemon that synchronizes the system clock to remote NTP time servers or local reference clocks. NTPD includes the ability to use this to keep your clock in sync and will run more accurately than a clock on a device not running NTPD. NTPD will also use several servers to improve accuracy. It is a complete implementation of NTP version 4 defined by RFC-5905, but also retains compatible with version 3 defined by RFC-1305 and versions 1 and 2, defined by RFC-1059 and RFC-1119, respectively.

Networking rutos ntp ntpd.png

Field Value Description
Enable NTPD off | on; default: off Turns NTPD on or off.
Enable NTP config from file off | on; default: off Run NTPD with uploaded configuration file.
NTP configuration file .conf file; default: none Upload a custom configuration file.
Server ip | url; default: NTP servers that this device uses to sync time.
Enable Server off | on; default: off Enables NTPD server to make the router act as an NTP server so that it can provide time synchronization services for other network devices.