Please provide the exact AT command syntax and correct port for retrieving PCID/frequency/ARFCN, the proper QNWLOCK format to lock these parameters to a specific base station, and include (or share installation references for) the Tailscale VPN plugin wit

IoT Modules 5G Module
1

Hello,
I am working with a Quectel 5G module and require clarification regarding several AT command operations.

  1. Requesting accurate AT commands:
    Please provide the exact and complete AT command syntax to correctly read the following parameters:
  • Physical Cell ID (PCID)
  • Frequency / EARFCN / NR-ARFCN
  • Additional NR cell information
    Also, kindly confirm which AT command port (e.g., /dev/ttyUSB2, /dev/ttyUSB3, /dev/ttyUSB4) must be used for these queries.
  1. Issue with QNWCFG and QNWLOCK:
    When I executed the vendor-suggested command:
at-cmd /dev/ttyUSB3 AT+QNWCFG=\"nr5g_cell_id\"

I received inconsistent or random output, so I need the correct method to obtain the NR cell ID.Additionally, when running the locking command:

at-cmd /dev/ttyUSB3 AT+QNWLOCK=\"common/5g\",640608,24

the module returned ERROR.
Please explain why this error occurs and provide the exact AT command format required to lock a specific:

  1. Tailscale VPN requirement:
    I need Tailscale VPN support integrated into the CPE for remote access.
    Please provide:
  • The Tailscale VPN plugin for this firmware, or
  • Instructions/references for installing Tailscale (including all dependencies) on this device.
    From the above my quectel modem is,
    Quectel-RM520N-GL
    revesion:RM520NGLAAR03A04M4G

Thank you. I look forward to your detailed guidance.

2

Dear @Avinash_123
You can use AT+QENG=“servingcell” .
But I don’t how to send AT commands on your side.
It is better to confirm with the manufacture of your device.

3

I had tried with the QENG also, but not working..?
I used commands at-cmd /dev/ttyUSB3 AT+QENG=“servingcell”. but i got the error.
Provide the exact commands to know the cell info and how to lock it. for modem RM520N-GL.