3GPP TSG-T2 #5 / ETSI SMG4
Helsinki, FINLAND, 6-9 September 1999	TSGT2#5(99)724	

Source:	T WG2/SWG6

To:	SA WG3

Title:	LS on Terminal Service Implementation Capabilities in the security domain

Document for:	Discussion and Decision

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1. Introduction

T2/SWG6 would like to thank S3 for the LS answer, S3-99252, on Terminal Baseline Implementation Capabilities in the security domain.
For the next step, we would like to confirm Terminal Service Implementation Capabilities in the security domain.

2. Confirmation of Terminal Service Implementation Capabilities in the security domain

Table.1 shows T2/SWG6’s comprehension of Terminal Service Implementation Capabilities in the security domain for speech service, FAX service, SMS-PP, SMS-CB, bearer service(Circuit Switched) and bearer service(Packet Switched). In the basis, we think only the confidentiality of user data and some signalling data included in service capabilities, is the Terminal Service Implementation Capability in the security domain. However, since we are not sure whether the integrity features are applied for some signalling messages during call set-up, etc, we would like to ask S3 to clarify it.
Table.1 is only an example. T2/SWG6 would like to confirm whether it is correct or not, and to request S3 to classify whole Terminal Service Implementation Capabilities in the security domain.

Table.1 Example of Terminal Service Implementation Capabilities in the security domain
M:mandatory, O:optional
Security feature	Service Capabilities	Section in TS 33.102	
	Speech 	FAX	SMS-PP	SMS-CB	Bearer service (CS)	Bearer service (PS)		
Confidentiality	-----	-----	-----	-----	-----	-----	5.1.3	
	Data confidentiality	M	M	M	M	M	M	6.6	
	Cipher indicator	M	M	M	M	M	M	5.5