Installation Instructions

nanoLTE E61 AP Hardware Installation nanoLTE E61 AP Commissioning
NANO_INST_43325 v205_0.6 for N4G_2.5 © ip.access Limited 2019 Page 14
3.2 Redirector First Contact and NTP Synchronisation for
Software Update
The LTE AP must be connected to the Internet at least once so that it can obtain its unique
OLM Package from the Redirector. If the LTE AP has not yet downloaded its OLM package,
it will not be possible to use the commissioning web page.
NTP synchronisation is necessary when there is also a requirement to update the LTE
software using the commissioning web page. This applies regardless of the current
software load on the LTE AP.
Note: This is not necessary when using the NOS to update the LTE AP’s software, as the LTE AP
has to use NTP to update its clock time before it connects to the NOS. For more information
about when the LTE AP uses NTP in its startup sequence, see [TRB_13005].
The LTE AP software is always code signed. The LTE AP must have an up to date clock
time so that it can verify that the time stamp in the signed software is valid. The LTE AP has
a "last known time" that it updates hourly, and the last known time is also preserved across
a reboot or factory reset. If the last known time is in the past in comparison to the time
stamp in the LTE AP software package, the AP will reject the software load.
Hence, when using the LTE AP’s commissioning web page to update the software, it is
recommended to ensure the LTE AP uses NTP to obtain the current time, so that the last
known time is up to date before starting the commissioning web page. To do this:
1) Connect the LTE AP to the Internet and reboot it. The LTE AP will automatically
update its clock time with NTP.
If the LTE AP has not yet contacted the Redirector, it will also connect to the
Redirector and obtain its unique OLM package. This enables the built-in
commissioning web page the next time that a Factory Reset is performed on the
LTE AP.
2) If updating the software from the commissioning web page, also leave the AP
switched on for at least an hour to ensure it updates its "last known time".
The AP is now ready for commissioning and will accept code signed software
downloads via the commissioning web page.