We’re sometimes getting confusing signal strength readings from our BG96 modems:
qmicli /dev/cdc-wdm0 --nas-get-signal-strength
[/dev/cdc-wdm0] Successfully got signal strength Current: Network 'lte': '0 dBm' RSSI: Network 'lte': '0 dBm' ECIO: Network 'lte': '-31.5 dBm' IO: '-106 dBm' SINR (8): '9.0 dB' RSRQ: Network 'lte': '-3 dB' SNR: Network 'lte': '-4.4 dB' RSRP: Network 'lte': '-140 dBm'
The ‘current’ and ‘RSSI’ numbers look like something went wrong. The ‘RSRQ’ indicates excellent signal strength while the ‘RSRP’ suggests we have no signal at all. This is in an area with good coverage where, a couple of seconds before and after, the command returns reasonable values. How should we interpret these numbers?