Re: Handling of Fixed Dialing

[Petteri Tikander <petteri.tikander@ixonos.com>]

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Hi Jeevaka and Denis,

and thanks for the comments.

I checked the invalidated-flag of EFadn (from file status-byte of GET RESPONSE) 
and it actually changed according to FDN-enabling/disabling. But for some 
reason I didn't got any change in EFsst for FDN/ADN-services. Could it be a 
good idea to add also reading of EFadn in the SIM-initialization routine, 
check invalidated-flag, and make decision of continuing initialization routine 
based on that?

The other issue was that selection of service table (SIM/USIM) based on 
EFphase. So SIM returns '3' in my tests. But the SIM-card seems to be of type 
SIM (not USIM), because I accessed some USIM-type elementary files (EFest, 
EFpbr) and those returned only error-codes. Like phase (3g) wouldn't actually 
be exactly the same thing than USIM-type. What about doing the next change in 
the SIM-init routine (not trusting to EFphase response when accessing the 
correct service tables):

- read first EFest
- if EFest-access gives a valid response, read EFust
- if EFest-access doesn't give a valid response, read EFsst

Br, Petteri

> 
>   I had a discussion with Denis today about both FDN and BDN status.
> 
> GSM SIM Card:(EFsst)
> 
>   In this case, FDN service status depends on the bits in EFsst and
> EFadn invalidation information.( invalidation information is part of the
> "Get RESPONSE" response data)
> 
>   EFsst - FDN is allocated and activated in the SIM:
> 
> 	FDN is enabled - When EFadn is invalidated or not activated.
>       FDN is disabled - When EFadn is validated.
> 
>   EFsst - FDN is not allocated or not activated in the SIM:
>       FDN is disabled
> 
>   Note: This information can be found in the 3GPP 11.11 specification
> section 11.5.1. Paragraph starts with "FDN capability request".
> Invalidation information bits information can be found in the 3GPP
> 51.011 specification section 9.2.1(Response parameters/data in case of
> an EF:) and section 9.3
> 
> USIM Card:(EFust, EFest)
> 
>   In USIM case, FDN enabled/disabled dependents on the bits in the EFust
> and EFest.
> 
> Let me know if something is unclear
> 
> Thanks and Regards,
> jeevaka
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