569
edits
Changes
Locking Devices to a Mobile Cell (view source)
Revision as of 13:48, 16 August 2023
, 13:48, 16 August 2023no edit summary
<p style="color:red">The information in this page is updated in accordance with [https://wiki.teltonika-networks.com/view/FW_%26_SDK_Downloads'''00.07.04'''] firmware version.</p>
<p style="color:red">The information in this page is updated in accordance with [https://wiki.teltonika-networks.com/view/FW_%26_SDK_Downloads'''00.07.04'''] firmware version.</p>
==Introduction==
==Introduction==
This article contains instructions on how to lock your Teltonika device to a specific cell. All mobile carrier cells are assigned a unique ID, which is broadcasted to all connected devices. It is usually irrelevant information for the end user, as cell switching on mobile phones and routers has become very good. But sometimes in '''remote areas''', it is beneficial to lock the LTE router to a single cell, as automatic mode may choose a cell with fewer or slower bands. For now, only some devices with Quectel modems support this feature.<br>
<p style="color:red">'''IMPORTANT NOTE:''' This feature is not officially supported by the modem manufacturers or by Teltonika. It should not be used in mission-critical infrastructure or large fleets of devices. If you experience any issues, please disable this feature.</p>
This article contains instructions on how to lock your Teltonika device to a specific cell. All mobile carrier cells are assigned a unique ID, which is broadcasted to all connected devices. It is usually irrelevant information for the end user, as cell switching on mobile phones and routers has become very good. But sometimes in '''remote areas''', it is beneficial to lock the LTE router to a single cell, as automatic mode may choose a cell with fewer or slower bands. For now, only some devices support this feature.<br>
'''Note:''' ''When the device is locked onto a single cell, it can still perform carrier aggregation (Cat 6 and higher modems only) with any other band/cell. The cell that you lock to will act as a primary band. The only way to circumvent this would be to also lock the router to a particular band.''
'''Note:''' ''When the device is locked onto a single cell, it can still perform carrier aggregation (Cat 6 and higher modems only) with any other band/cell. The cell that you lock to will act as a primary band. The only way to circumvent this would be to also lock the router to a particular band.''
'''''Note:''''' Do not use WebUI to change this setting. It has to be done via AT commands.
'''''Note:''''' Do not use WebUI to change this setting. It has to be done via AT commands.
====Finding the serving cell details====
====Finding the serving cell details====
The explanation for the last 3 measurements can be found on our [[Mobile_Signal_Strength_Recommendations|Mobile signal strength recommendations]] page.
The explanation for the last 3 measurements can be found on our [[Mobile_Signal_Strength_Recommendations|Mobile signal strength recommendations]] page.
'''From these outputs, the most fitting cell should be picked, and its EARFCN and PCI value should be noted.'''
'''From these outputs, the most fitting cell should be picked, and its EARFCN and PCI value should be noted.'''
====Setting the device to the airplane mode====
----
To set the device to the airplane mode, run this command:
<pre>gsmctl -A 'AT+CFUN=0'</pre>
'''This process may take up to one minute''', and when it's done, the modem will reply '''OK''' in the terminal.
====Locking to a selected cell====
====Locking to a selected cell====
[https://www.opencellid.org/ OpenCellid] - database of cells and their locations;<br>
[https://www.opencellid.org/ OpenCellid] - database of cells and their locations;<br>
[https://www.cellmapper.net/ CellMapper] - database of cells, their locations as well as EARFCN and PCI data;<br>
[https://www.cellmapper.net/ CellMapper] - database of cells, their locations as well as EARFCN and PCI data;<br>
[[Category:Modem control]]
