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LTE network error codes
Newer firmware of Lobaro products report potential ESM (EPS Session Management) and EMM (EPS Mobility Management) errors in their status uploads.
EMM Error codes
Source: ETSI TS 124 301 V14.5.0 - Table 9.9.3.9.1: ESM cause information element
E.g.: +CNEC_EMM: 19 is error code 19 which is 0b10011 which corresponds to ESM failure (see table below)
ESM Error codes
Source: ETSI TS 124 301 V14.5.0 - Table 9.9.4.4.1: ESM cause information element
CNEC_ESM: 27,0 is error code 27 with cid 0, and 27 is binary 1b11011 which corresponds to Missing or unknown APN
NB-IoT network coverage
Please see: https://iotcreators.com/network/?#G
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Today Lobaro is using the Nordic nRF9160 in most of it's products. Beside that Lobaro Firmware the Modem Firmware from Nordic is running on a separate core.
Modem Parameter
| Parameter | Beschreibung | Values |
|---|---|---|
| conMode | ||
| reg | Registration |
|
| tac | Tracking Area Code | |
| ci | Cell ID | |
| psm | Power Safe mode Intervall | |
| tau | Tracking Area Update | |
| SNR | Signal to Noise Ratio |
Known issues
Remote Update for Modem Firmware not possible (relevant until today)
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