> 3.4.6 | SIEMENS release cause for L3 Mobility Management (MM)

> Number | Description
> 1 | No SIM available
> 8 | No MM connection
> 9 | Authentification failure
> 11 | MM performs detach
> 17 | Registration failed and will be re-attempted in a short term
> 18 | CM connection establishment failed
> 19 | Registration failed and will be re-attempted in a long term
> 20 | RR connection is released
> 21 | MS tries to register
> 22 | SPLMN is not available
> 23 | An MTC is in progress
> 24 | A PLMN scan is in progress
> 25 | The MM is detached, the MS is in MS class C GPRS only
> 26 | The maximum numbers of CM connections is exceeded
> 27 | The MM is not registered
> 28 | The MM state is incompatible