TSG-SA Working Group 1 (Services) meeting #3	TSGS1#3(99)299
Hampton Court, Surrey, UK 10th-12th May 1999	Agenda: 5.4.2

TSG-SA	TSGSA#3(99)187
Meeting #3 Yokohama, Japan, 26-28 April 1999

Work Item Description
Title

UMTS Interworking with ANSI-41 networks

Intended Output

 Technical report that is a feasibility study.

Impact on Other Technical Specifications and Technical Reports

Based on output of this feasibility study a work item may be created.
Technical Scope

In certain regions IS-41 Networks provide wide area coverage.  and interworking  with ANSI-41 networks is necessary in order to facilitate the introduction  of UMTS via the use of mutimode terminals. 

The requirements for the roaming, the hand-over, and interoperability  will be described in this document on service requirements with the following priorities:
•	Global Roaming (mandatory) 
•	Hand-over (optional)
•	VHE Interoperability (optional)
•	And so on(For Further Study)

The study should include set of telecommunication services to be supported and relevant security issues. The study should include evaluation of NNI concept currently being elaborated by ITU.

Impact on Other 3GPP Work Items

This report  provides the guidelines for other TSGs and WGs for the definition of Architecture and Networks.

Schedule of Tasks to be Performed.

Task	Planned Start	Planned Finish	
Work Item Creation	15/2/99	23/2/99	
Revised Work item Approval by TSG SA	26/4/99	27/4/99	
Drafting and discussion	1/4/99	1/12/99	
Submission to TSG SA for approval	1/12/99	30/12/99	
Note:	* These dates are a guess at present

Supporting Individual Members

All WG1 members

Rapporteur

SAMSUNG Electronics