1 Services shared between network and endpoints Lill Kristiansen Prof. Dr.Scient, Telematics, NTNU Norway

2 Existing and new smart endpoints GSM: New phones: SonyEricsson P800 Nokia Communicator MS Smartphones Samsung Smartphone for fixed network (ISDN) PDA Classical version without network Or e.g. WLAN enabled Future: In several parts

3 Existing and new networks Circuit switched: GSM for voice UMTS for interactive multimedia (H.324M) HSCSD for data (streaming, big files etc) Packet switched GPRS:  best effort, streaming GPRS release 5 with QoS  UMTS IMS: IP Multimedia Subsystem (with SIP)  Fixed IP

4 Services vs applications Traditional call related services: Call forwarding, screening etc  standardised services  No/little competition on new services Applications: Using the underlying network e.g. GPRS New combinations such as: click-to-call-while-web-shopping, call screening based on my calendar info Competition!

5 Long term goals Study modelling with both RPC-calls and states/messages Javaframe: giving Javacode from SDL/UML- like models Combinations of ’fat’ and ’thin’ machines, tradeoffs and business implications Use of middleware even between the components inside the distributed endpoint Use of SIP/IMS for combined services or create own applications with similar properties using e.g. JavaFrame

6 Short term goals Study Javabased services/applications running on todays phones and networks Study other applications or call based services that we may put on todays endpoint

7 3 concrete examples PDA Classical solution: running a local DB Networked solution Call related services like personalised call screening Either ’classical’ telco networked solution Or ’IETF-inspired’ endpoint solution Other screen based applications May run locally, while the endpoint is networked

8 Classical vs networked PDA Classical PDA Running a local DB No network, no phone, no IM system Networked PDA/phone Running the DB in the network Imply 2 totally different business cases

9 Combinations seems better GSM/ GPRS call(voice) setup DB/ Cache GUI/browser DB click-to-call Data (synchr. on demand) Little need for voice and data at same time Need endpoint with: large storage (PDA-like) network (phone-like) IP SMS/IM

10 Personalised call screening Today when in a meeting: Use CFU in the network  BUT: offers no personalisation/ differentiation  Use CallerID+ silent/vibrating mode in the endpoint  Is manual service and very personal  BUT is disturbing  May be automated and personal:  if endpoint is allowed to intercept call setup signalling

11 Call related services on the endpoint Open up the terminal (or even create a ’virtual terminal’ in many pieces): Run (Java-) application capable of automated personal screening on the endpoint (Cannot be done today on most GSM-phones) Ring/vibrate Screening setup

12 Voic with screen menu Run application locally Phone need not support GPRS and voice simultanously Menu is rather static, hence suitable for a local ’cache’

13 A screenshot of the Nokia implementation Start the application first Application will initiate the outgoing call to voic Ex.1:Push ’save’ Generates a ’push 2’ Which generates a DTMF for 2 Same screenshot, next message Ex.2: Push ’pause’ Generates a ’push 5’ And changes screenshot And changes button from ’pause’ to ’play’

14 Some findings We implemented in Personal Java on Nokia Communicator WAP-cache could have been an other option Several code examples for the Symbian book did not work Changing look and/or function on buttons depending on state was not predefined Our application involved call setup Makes the emulator less usefull Need to test on the real endpoint

15 More on the voic helper Offers enhanced functionality for the enduser multimodal interface (eye+ear) While keeping the network unchanged Voic server is as before GSM and GPRS need not run at same time Runs on existing phones (Not intended as a replacement for ’unified messaging’)

16 New combinations Use address book on the endpoint (phone) Group your friends, collegues, family Upload this to the network and to the voic server Update the voic server Enable personalised greetings based on who-is-calling, e.g. groupwise Use the same grouping: for IM, addresses and voice mail greetings

17 Requirements, non-technical Telcos must not believe they shall make everything themselves Telcos must allow balanced combinations Telco can enable new things, but only at the right cost Telco cannot have full control of everything (Applications using the network as a pure bearer will always exist)

18 Requirements, technical Open interfaces in the network E.g. OSA is underway in 3GPP Open interfaces in the endpoints E.g. intercept calls, get caller-id from call set-up Allow applications access to addressbook (also for games etc.) Gives: New business cases! New applications!

19 Distributed system modelling Traditional computer science view: UML ODP remote procedure calls little focus on realtime Traditional telecom view: SDL state and message based signalling tiny /dumb endpoints

20 Visualising the differences Computer science: RPC between objects on some machines In OMG/CORBA: Traditional telecom: Clear separation between: endpoints Servers (switches) Middleware