I have just hacked a workaround: using the syslog facility I sent all syslog messages to a central server, which extracts the LocDectRssiInfo parts and sends the RSSI values to MQTT. The result is not perfect, but helps detecting weak links and rssi fluctuations.
See attached screenshot.
I converted the raw RSSI-values from syslog to dB-Values by the following formula:
dB-Value = hex2decimal(RAW-Value) * 2.22 - 152
I ignored the "Phase" parameter. The values are relatively close the the values displayed in Multicell part of the the webinterface. If anyone can provide a better formula, I would be glad to use it.
I have just started looking into the binary format of the UDP multicast traffic on port 49412. All required information must be in there; but I don't have the time for full reverse engineering of the protocol. Could you please document the protocol (or ideally provide wireshark plugin)?