HI there,
I am unable to find the correct MIB for the particular image I have searched them in this link provided by the documentation . https://cfnng.cisco.com/mibs.
I would also like to know Whether this value can be acquired by an application inside a DOcker on IR829 . I referred this link https://community.cisco.com/t5/cisco-iox-documents/getting-a-gateway-cellular-rssi-from-cisco-iox/ta-p/3928547