France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Bridging the Chasm BetweenBridging the Chasm Between Legacy and Next-Generation Legacy and Next-Generation

NetworksNetworks

Internet Telephony ConferenceInternet Telephony ConferenceMiami, FloridaMiami, Florida

February 5th 2003February 5th 2003

France Telecom R&D: Far ahead and close to youFrance Telecom R&D: Far ahead and close to you

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

France Telecom

Who we are

France Telecom More than 108.4 million clients around the world*

34.4 Billion € revenues** (40.9% generated outside of France)

France Telecom R&D More than 3,000 researchers and engineers (130 in the US)

13 sites across the world

More than 200 new patented inventions every year

Approximately 15 start-ups created

* in controlled subsidiaries, at September 30, 2002** for the nine months ended September 30, 2002

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

The SIP and Web Services Project

Development of innovative IP-based telecommunications services

At the proof-of-concept stage

No deployment plans yet

Convergence of IP communications with Web Content

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

The End User Experience Today

Traditionally segmented silo-type services offering PSTN services: voice, voice mail…

Mobile Services: voice, voice mail (different), Internet access, e-mail, SMS, MMS

Internet Services: Internet browsing, email, IM

Deployed over a mosaic of access networks PSTN network (France Telecom)

Mobile Network (GSM - Orange)

Internet Access (Wanadoo)

Results in a fragmented user experience

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

The Project Goal

Offer France Telecom end users rich communications services IP multimedia communications: Voice, Video, Data,

Gaming

Event Notification , Instant Messaging and Presence

Web content

Converged and accessed across all communications networks IP phones

Desktop

Mobile phones, PDA

POTS phones through PSTN gateway

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

The Project Goal

Provide the end-user a federated offer of services

The service is deployed on IP core network

The service can reach/be accessed by the user from different access networks

The user experience is now unified across so far fragmented networks

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

The Project Objectives

Go beyond PSTN Services Consumer market oriented Personalization Convergence of voice, video, data & multi-access Change of media within a session Device specific treatment of a request Combine SIP and Web services Intermediation Orchestration and brokerage of services Reusable building blocks

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Technical Background

IP Communications

Using SIP: Session Initiation Protocol

For Voice, Video, Data, Instant Messaging and Presence

Extendable to non-IP devices through PSTN gateway

Web Services Bundle and orchestration of web services

Offers the ability to differentiate communications

services

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Technical Background

Use and combine these technologies to create and deploy innovative services

Innovate rather than duplicate PSTN features

SIP: for multimedia session establishment and event notification

Web Services (SOAP, UDDI, WSDL) to provide the content

VXML (then SALT) to allow speech integration in Web-based application

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Technical Background

SIP components SIP User Agents:

Fixed-line IP phones

Soft-phones

PDA: radio access emulated over WLAN

SIP Registrar, Proxy Server, Presence Server

SIP Application Server

B2BUA for third party call control

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Technical Background

Web Services Component Use off-the shelves internet-hosted web services

Free WS – implies no guarantee of service

Commercial WS – QoS, high availability

Accessed through SOAP protocol

Speech integration Automatic Speech Recognition

Text-To-Speech

VXML 2.0

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Technical Background

Java application developed on SIP application server and web server

Integration with Microsoft Exchange Server

No development on the terminal side

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Network Architecture

Proxy SIP

Proxy SIP

Application Server

SIP User

VRU

Web App server

3. SIP

3’. SIP

2. SIP

2’. SIP

7. SIP

6. HTTP

6’. Web pageRedirect

SIP

Calendaring Service

1.SOAP

4.SOAP

5.SOAP

Maps/Directions Service

Traffic Service

7’. SIP

Buddy

1 2 3

4 5 6

7 8 9

* 8 #

SD

DB

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Conclusion

SIP is a protocol of choice to create converged IP services Voice, Video, Data, Event Notification, IM, Presence, Third Party

Call Control

Web Services allow for easy and swift service creation Reducing overall cost and time to market

Allowing to create application on demand

Enbling the use hosted services on the internet with minimum CAPEX

The emergence and leveraging of these new technologies, through development of innovative services, could be the trigger for faster deployment and adoption of MoIP services

France Télécom R&D – February 5th 2003Internet Telephony Conference – Miami, Florida

Conclusion

Stabilization of the SIP protocol and extensions Different versions implemented create interoperability issues

Deployment issues Nat/firewal traversal

Service Management

Consolidated accounting information

Fault Management

QOS guarantee to the end user

Service Provisioning

Web Services immaturity