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aeichhorn
newbie
Topic Author
Posts: 25
Joined: Tue May 12, 2020 9:52 am

FG621-EA No PLMN locking?

Thu May 08, 2025 10:09 pm

Hey everyone,

I have an L23UGSR-5HaxD2HaxD-NM with an R11eL-FG621-EA.

When I set an operator using the MCC+MNC in roaming it just ignores it as it seems.
Other devices with the same SIM card can just switch between the different roaming operators using the MCC+MNC.
My google research didn't give me any clues. Does the FG621 not support locking to a specified PLMN?
I also had no success in finding a AT command to lock the card to a specific PLMN.

Does someone here have any informations about this?
This is a very important feature for me.

EDIT: I'm on ROS 7.18.2 (stable) and Modem Firmware is the latest: 16121.1034.00.01.01.09

Thanks in advance!
Regards
Arne
 
MrYan
Member Candidate
Member Candidate
Posts: 178
Joined: Sat Feb 27, 2010 6:13 pm

Re: FG621-EA No PLMN locking?

Fri May 09, 2025 5:58 pm

If you search for FG621 in https://help.mikrotik.com/docs/spaces/R ... 146563/LTE it appears the GTCELLLOCK command doesn't lock to PLMN (only channel/cell).
 
aeichhorn
newbie
Topic Author
Posts: 25
Joined: Tue May 12, 2020 9:52 am

Re: FG621-EA No PLMN locking?

Tue May 13, 2025 9:09 pm

I dont want to lock to a specific cell. Just to a specific provider. Is that command internally used for the "operator" option in RouterOS?
So no provider lock for this modem? Thats kinda sad...
 
MrYan
Member Candidate
Member Candidate
Posts: 178
Joined: Sat Feb 27, 2010 6:13 pm

Re: FG621-EA No PLMN locking?

Wed May 14, 2025 11:45 am

I don't know what command RouterOS tries to use, but you should be able to see it in the log if you add this to your configuration:
/system logging add topics=lte,!packet,!raw