TSG-Terminals Working Group 3 (USIM) adhoc	TSGT3z99010
Copenhagen 26th - 27th May, 1999	

Source:	NTT DoCoMo 

Title:	Proposed USIM compatibility for 2nd generation mobile equipment
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1.	Introduction
The issue of USIM compatibility for 2nd generation mobile equipment is described in T3#4 meeting report following.

It was proposed that it should be the responsibility of the UICC to ensure that the links should be destroyed if a GSM ME updates a USIM phone book entry. It was agreed that compatibility issues should be discussed at the next T3 / SMG9 meeting.	

This document describes UICC function for solving the above.

2.	Proposal
Phone book for USIM is composed of EFADN, EFEXT1, EFPBI, EFIAP, EFPBC, EFPGP, EFANR and EFSNE. EFADN and EFEXT1 can used by 2G equipment. But EFPBI, EFIAP, EFPBC, EFPGP, EFANR and EFSNE can not use by 2G equipment.
Therefore, It has two problems.
-	It remains each EF except EFADN and EFEXT1 when an entry of EFADN and/or EFEXT1 deletes by 2G equipment.
-	It can’t change each EF except EFADN and EFEXT1 when an entry of EFADN and/or EFEXT1 deletes and changes by 2G equipment. In order to an entry of phone book are inconsistent.

We proposed function of UICC with phone book that is composed of EFADN, EFEXT1, EFPBI, EFIAP, EFPBC, EFPGP, EFANR and EFSNE.

UICC must have following function.
I.	UICC initialises each record of EFPBI, EFIAP, EFPBC, EFPGP, EFANR and EFSNE when record of EFADN deleted by mobile equipment (e.g. 2G terminal user). If record of EFEXT1 is deleted or modified, then UICC nothing to do.