3GPP TSG-T2 #7 / ETSI SMG4
Ystad, SWEDEN, 22-26 November 1999	TSGT2#7(99)1082	

Liaison Statement

From:	T2/SWG6

To:	SA3, SA1

Cc:	T3

Subject:	Reply to LS on additional Terminal Baseline Implementation Capabilities
	for secure interoperation with GSM

___________________________________________________________________________

T2/SWG6 would like to thank SA3 for LS T2-99921/S3-99329 on additional Terminal Baseline Implementation Capabilities for secure interoperation with GSM.

We added the table in the LS(T2-99921/S3-99329) to Annex A6 of TR21.904 with the slight modification from T2/SWG6 point of view. Based on the discussion in TSG-T#5 and TSG-SA#5, T2/SWG6 is now reconsidering the usage of the term “mandatory”. As a result of these discussions, we have in this case substituted the term “mandatory” for the term “essential conditional” together with its condition.

The added text to TR21.904 is as follows :

Security feature	Essential/optional capabilities	Section
in TS33.102 draft
V3.2.0	
Interoperation between 3GPP and GSM systems	<Essential Conditional>
UEs that support GSM SIM or a GSM SIM application on the UICC shall include functions that allow conversion of security parameters from GSM to UMTS.	6.3.7.2	

T2/SWG6 requests clarification from S1 of whether essential conditional is the correct term to use in the circumstance or whether GSM SIM and/or GSM SIM application on the UICC are required to be supported by all 3G UEs even those designed for use in local market where there is no GSM network. 

Note ; T2 SWG6 decided to use following definitions.
•	Essential UE Requirement (Conditional) ; Requirement which has to be implemented under certain Service conditions.  e.g. AMR codec in UE which supports speech service
•	Essential UE Requirement (Unconditional); Requirement which has to be implemented in any 3G UE in order to exist in and communicate with 3G network. e.g. Chiprate of 3.84Mcps
•	Mandatory UE Requirement ; Regulatory requirement which is applicable to 3G UEs.   It is determined by each country/region and beyond the scope of 3GPP specification. e.g. Spurious emission in UK 
•	Optional UE Requirement ; Any other requirements than 3 requirements listed above.   It is totally up to individual manufacturer to decide whether it should be implemented or not. e.g. Network Initiated MM connection establishment