3GPP TSG-T2#4 / ETSI SMG4
Miami, US, 14-16 June 1999	TSGT2#4(99)525	

Agenda Item:	SWG6

Source:	Chairman SMG3-WPB (TSG CN SS ad hoc group)

Title:	Review of terminal capabilities

Document for:	Information

___________________________________________________________________________

> -----Original Message-----
> From: Steffen Habermann [SMTP:Steffen.Habermann@t-mobil.de]
> Sent: Tuesday, May 11, 1999 2:04 PM
> To:   kevin holley; ian park; skpark; ed ehrlich
> Cc:   yun-chao hu; franco settimo
> Subject:      RE: Review of terminal capabilities
> Sensitivity:  Confidential
>
> Hello all,
>
> First of all I apologise for not following the discussion on terminal
> capabilities from the beginning. Now it appears to me that TSG T2 is
> interested in "all" possible capabilities an UMTS terminal may support.
>
> At least I can give a list of features a terminal has to support in order
> to be able to control the standardised supplementary services (including
> USSD). These services were standardised for GSM in SMG3-WPB. It is the
> assumption of TSG CN that these supplementary services shall be supported
> in UMTS as well. This is because of a corresponding requirement in UMTS
> 22.00.
>
> Therefore the TSG CN SS ad hoc group was created, which will continue the
> work of SMG3-WPB in 3GPP.
>
> As an answer to the question about the terminal capabilities required by a
> terminal to support standardised supplementary services, I would like to
> give you a list of specifications, TSG T2 should be aware of:
>
> - Besides the normal call control management, GSM 04.08 (or its layer 3
> UMTS successor) contains a lot of supplementary service related
> procedures.
>
> - General aspects of the supplementary service operation at the radio
> interface are defined in GSM 04.10.
>
> - The coding of information necessary for support of supplementary service
> operation on the mobile radio interface layer 3 is defined in GSM 04.80.
>
> - In addition to these specifications, the Stage 3 specifications of
> supplementary services define in more detail the requirements for certain
> services. I will try to list them all:
>
> GSM 04.67, enhanced Multi-Level Precedence and Pre-emption
> GSM 04.72, Call Deflection
> GSM 04.81, Line identification services
> GSM 04.82, Call forwarding services
> GSM 04.83, Call waiting and call hold
> GSM 04.84, Multi party service
> GSM 04.85, Closed user group service
> GSM 04.86, Advice of charge service
> GSM 04.87, User-to-user signalling
> GSM 04.88, Call barring services
> GSM 04.90, Unstructured SS data operation
> GSM 04.91, Explicit call transfer
> GSM 04.93, Completion of calls to busy subscriber
> GSM 04.96, Calling Name Presentation
>
> - For all these services it might be necessary to consult the
> corresponding
> stage 1 (02 series) and stage 2 specification (03 series) as well.
>
> Considering the future work on supplementary services, it is my assumption
> that TSG CN SS ad hoc will more focus on definition or usage of general
> mechanisms for service control. In this area already defined capabilities
> as MEXE or SAT will become more important. However this is for further
> discussion. The TSG SS ad hoc will be happy to discuss these issues
> together  with TSG T, if appropriate requirements are recognised.
>
> Kind regards
>
> Steffen Habermann
> Chairman SMG3-WPB