Ericsson Cradlepoint routers do not allow NTP to be disabled by editing a device's configuration; without NTP, the system time is based on the local real-time clock (RTC), which may not be set correctly and may lose accuracy depending on temperature and component tolerance.
If an NTP server is unreachable, Stratum Time Failover synchronizes the clock instead of NTP. If you absolutely must disable NTP, you can only do so using the NetCloud OS device UI.
Log into NetCloud Manager.
Select in the left-side navigation panel.
Select the desired router.
Select the menu, and then select .
Select Open Device UI.
Log in to the device from the LOGIN screen. The default username is "admin". Default passwords are supplied with routers.
Navigate to SYSTEM > Administration > System Clock.
Under Network Time Protocol (NTP), uncheck Enabled.
Select Ok after reading the warning.
Log into NetCloud Manager.
Select in the left-side navigation panel.
Select the desired router.
Select the menu, and then select .
Select Open Device UI.
Log in to the device from the LOGIN screen. The default username is "admin". Default passwords are supplied with routers.
Navigate to SYSTEM > Administration > System Clock.
Uncheck Stratum Time Failover.
Note
Stratum Time Failover will still be active (when enabled) even if NTP is disabled. Disable the feature before disabling NTP to reduce data usage on the active SIM card.
Select .