Re: Handling of Fixed Dialing
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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