ue-identity-not-derived-by-network

[libqmi at svenschwermer.de]

Hi lynxis,

Thanks for your explanation, this helps greatly!

Best,
Sven

On 11/23/23 13:37, Alexander 'lynxis' Couzens wrote:
> Hi Sven,
> 
>> On some of our (identical) devices, we occasionally get the error
>> ue-identity-not-derived-by-network. Does anyone on this list know what
>> this error means and what it's caused by?
> 
> this error comes from the network (e.g. spec: ETSI TS 04.08 G.6 cause 9 [1] for GSM, but should be the same for LTE).
> It means the network side can't find your TMSI (temp IMSI) in the database and your modem needs to establish a
> new connection using the IMSI.
> There are multiple reason for this on the network side (maintainance, timeouts, ..) or even highly unlikely an IMSI catcher is around.
> 
> Best,
> lynxis
> 
> [1] https://www.etsi.org/deliver/etsi_en/300900_300999/300940/07.07.01_60/en_300940v070701p.pdf
> 
>