Disclaimer: This tr is an ad-hoc draft, and subject to modification. The Tr has yet to be presented to, or be accepted by, tsg-s1


SAT Editor's note: input awaited… VHE/OSA/???????????????



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SAT


Editor's note: input awaited…
    1. VHE/OSA/???????????????


Editor's note: input awaited from Tomas Ahnberg (Telia)

6 New service capabilities and end user benefits


By analysing and categorising existing circuit switched domain services, this clause concludes that these services shall not be re-standardised in the PS domain. This results in a basic set of services which must be available in the PS domain, with the remaining services offered in the PS domain in non-standardised ways using the service capabilities.

This clause:-



  1. groups the main circuit switched domain supplementary services into several main categories of services

  2. analyses each main category of services

  3. identifies which services can be provided in a non-standardised way by the CAMEL, MExE and SAT toolkits

  4. identifies which services (such as authentication, CAMEL call triggers etc.) which will require to be standardised

In conclusion only a minimum set of services requires to be standardised in the PS domain, with the Virtual Home Environment's CAMEL, MExE and SAT toolkits using basic primitives to create alternative, personalised call handling services tailored to the user requirements.

Editor's note: further contributions/comments/analysis welcomed…


6.1 Main categories of services


An analysis of the broad classes of existing services results in the following list of example categories:

  • Basic Call

  • Call Barring (includes advice of charge, prepaid)

  • Call Diversion

  • Call Manipulation (Call hold, transfer etc)

  • Addressing (includes number translation, number portability, emergency call)

This is not a complete list of supplementary services, which is elaborated in the feature list. The above categories are further elaborated below and are then mapped into service classes.

6.2 Basic Call


This category of services provides the ability to make voice, emergency and data calls to other terminals, even when roaming. This includes interworking with existing voice and data networks for both fixed and mobile users, addressed using the standard E.164 phone numbers. This category of services must also include capabilities for Mobile Number Portability and Lawful Interception (voice and data). Implicitly, Tandem Free Operation is also included. This list is not exhaustive.
Editor's note: further clarification required, and application to the roaming case need to be clarified.

6.3 Call Barring


This category of services performs two basic functions:-

  • restricting the user to subscribed services (e.g. no roaming, no long distance, session barring, bearer barring, QoS etc.)

  • subscriber cost control

The requirements for call barring are oriented less at limiting those teleservices which a subscribed is subscribed to, and more at simple filtering of defining which services are made available to users (by defining their menu options on the terminal) and blocking of specific teleservices to number ranges.

Specifying which services are available to users can be done through WAP, MExE, SAT and CAMEL toolkits. Outbound call barring for teleservices can be implemented using SIM Toolkit based on the number dialled, serving network (e.g. CAMEL), and MExE applications (e.g. MExE services, WAP WTA applications etc.). Therefore, by using service capabilities there is no requirement for a specific call barring service to be standardised in Release 2000.


6.4 Advice of Charge


A related feature in 2G networks is advice of charge, which is based on the serving network being aware of the teleservice in use, the price for it and the mark-up used in the home network.

In future, the price charged to a subscriber may bear little relation to the charges imposed by the serving network because there may be special offers/discounts, or the service may include elements charged elsewhere (e.g., content charged by a 3rd party).

Therefore the advice of charge may originate from the (mostly IN-based) pre-pay system and delivered to the user by various means. A method of displaying the received charging information to the user could be WAP/MExE.

6.5 Call Diversion


This category of services include immediate call diversion, call diversion on no reply, call diversion on not reachable, call diversion on busy and call completion to busy subscriber.

With terminals becoming more sophisticated, they should be capable of receiving alerts about incoming calls even when already engaged in a call, allowing terminals to signal how to process with the call. Therefore the requirement for call diversion features within the serving network is substantially reduced.

The features which are required in the serving network (e..g. provided by CAMEL/HLR) are:


  1. immediate call diversion

  2. call diversion on no reply

  3. a set of primitives that allows the terminal to:

  1. be notified of incoming calls (including when already engaged in a call)

  2. hold/transfer/accept any of the incoming calls to another destination

  3. be notified of success or failure of these actions

Therefore no basic call divert features other than those proposed above are required to be standardised (through HLR/CAMEL).

This allows terminals to be capable of providing the call diversion features when reachable (with tbe service logic securely downloaded using MExE, building on WAP's WTA where available), and the home network/serving network to handle call diversion when the terminal is unreachable (using HLR/CAMEL). The basic primitives can also provide capability to offer call waiting, hold and transfer features. Which should be accessible through the MExE toolkit.





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