2. Slide 1, Faynberg & Lu SG 13 Workshop Converged Services Igor Faynberg (faynberg@lucent.com) Hui-Lan Lu (huilanlu@lucent.com) Bell Labs, Lucent Technologies Workshop on IP-Networking and MEDIACOM 2004, Geneva

3. Slide 2, Faynberg & Lu SG 13 Workshop Outline l What do we mean by convergence? l Adjusting the PSTN to the Internet –Access to the Internet over the PSTN lines –Internet off-load l Adjusting the Internet to the PSTN –IP telephony –PINT –SPIRITS –Unified Messaging –Voice Access to the Web –Porting of PSTN intelligence into the IP telephony world (SIN) –VPN l Conclusion

4. Slide 3, Faynberg & Lu SG 13 Workshop Three Aspects of Convergence 1) Interworking of traditional PSTN with the IP infrastructure to support voice over IP 2) Interworking of PSTN with the IP infrastructure to deliver IP- based service control for traditional PSTN calls (i.e., IP Telephony without voice over IP) 3) Interworking of PSTN with the IP infrastructure to provide remote access to IP networks via PSTN lines

5. Slide 4, Faynberg & Lu SG 13 Workshop Adjusting the PSTN to the Internet (PSTN access to IP networks) l Exploiting the bandwidth that can be supported by two-wire telephone access lines + Pulse Code Modulation (PCM) modem + Digital Subscribers Line (DSL) l Offloading Internet traffic from the PSTN

6. Slide 5, Faynberg & Lu SG 13 Workshop PSTN Internet User Ingress Switch SS7 Network Egress Switch PSTN Congestion due to Internet Traffic Remote Access Server congestion Internet ISP

7. Slide 6, Faynberg & Lu SG 13 Workshop PSTN Internet User Ingress Switch SS7 Network Egress Switch An Internet Offload Solution Remote Access Server Softswitch Internet ISP

8. Slide 7, Faynberg & Lu SG 13 Workshop Adjusting the Internet to the PSTN (two aspects) 1) Support of the IP telephony requirements: l A new IP endpoint--IP telephony gateway--is required to interconnect the Internet and the PSTN l QoS must be enforced l The IP and PSTN naming and addressing schemes must interwork 2) The Internet-based support of the PSTN services requirement: l Keep the intelligence at the edges! (Or, at least, share it with the edges)

9. Slide 8, Faynberg & Lu SG 13 Workshop PC-to-PC (1) IP Network Network Access Server PSTN dialup access PSTN as an access vehicle

10. Slide 9, Faynberg & Lu SG 13 Workshop PC-to-PC (2) Enterprise A Gateway PSTN Enterprise B IP PBX PSTN as the backbone transport

11. Slide 10, Faynberg & Lu SG 13 Workshop Phone-to-PC or vice versa Gateway IP Network PSTN

12. Slide 11, Faynberg & Lu SG 13 Workshop Phone-to-phone Enterprise Gateway IP Network PSTN Home Gateway IP trunking

13. Slide 12, Faynberg & Lu SG 13 Workshop Why IP telephony? l Toll bypass avoids long-distance call charges. l One type of networks for both voice and data simplifies network operation, administration, and management. l Easy integration with other IP applications promises richer than ever telephony services.

14. Slide 13, Faynberg & Lu SG 13 Workshop Converged IP Telephony Architecture SIP User Agent H.323 Terminal Media Gateway Soft Switch Gatekeeper Cloud SIP Server Cloud IP Network H.323 Terminal voice H.248 SS7 SIP/H.323 SIP User Agent IVR System Public Switched Telephone Network SCP

15. Slide 14, Faynberg & Lu SG 13 Workshop Internet Enhancing PSTN Call Control Internet PINT Gateway PINT Client SIP Requests Request to call Request to fax Request to hear content Future: Request to Conference PSTN/Internet Interworking (PINT) PSTN SCP

16. Slide 15, Faynberg & Lu SG 13 Workshop Multimedia conferencing Free calls (paid by advertisers) – with the profiling feature Speed Call list provisioning Service Subscription Follow-me service provisioning Access to communications bills Account information changes VPN Provisioning PINT has successfully concluded, but … There are potential services for the future

17. Slide 16, Faynberg & Lu SG 13 Workshop Internet Call Waiting Internet Caller ID Utilizing the Internet for PSTN Service Notification Voice Mail arrival Phone Off-hook detection Internet PSTN SPIRITS Gateway SPIRITS Server SCP Requests & Notifications Services in the PSTN/IN Requesting InTernet Services (SPIRITS)

18. Slide 17, Faynberg & Lu SG 13 Workshop Service control Switch IP Network PSTN Telephony Gateway SPIRITS Client Telephony Gateway SPIRITS Gateway Telephony Gateway PINT Server Telephony Gateway SPIRITS Server Telephony Gateway PINT Client C A B Joint PINT/SPIRITS Architecture

19. Slide 18, Faynberg & Lu SG 13 Workshop SPIRITS Status 1) The Implementation RFC (informational) RFC 2995 has been published 2) The Architectural RFC candidate has undergone WG last call 3) The Requirements RFC candidate is in the process of consensus building 4) The protocol work is under way

20. Slide 19, Faynberg & Lu SG 13 Workshop Hello... E Beep... Fax Reader E-Mail Fax Sender Voice Directory Visual Mail Voice Mail Incoming Message Notification The ability to create, send and retrieve any type of message–anytime, anywhere– with any terminal... Unified Messaging

21. Slide 20, Faynberg & Lu SG 13 Workshop Residential Stock quotes Traffic conditions Web-based Yellow/White pages Local Events Personalized Web page services Voice Service Logic on Web Servers HTTP Voice Browser Web / Application Server Corporate Data PSTN Switch VoiceXML Internet Intranet Voice Service Logic Voice Access to the Web

22. Slide 21, Faynberg & Lu SG 13 Workshop IP Network PSTN Telephony Gateway Soft Switch Service Control Point Switch Intelligent Peripheral SIP INAP SIP/INAP Interworking (SIN) [IETF Design Team]

23. Slide 22, Faynberg & Lu SG 13 Workshop Enterprise IP Network Island Internet Enterprise IP Network Island PSTN Access Server Tunnel Gateway Virtual Private Network

24. Slide 23, Faynberg & Lu SG 13 Workshop Conclusion l Regardless of the economical success of the IP telephony, there is room for integration of the traditional telephony and Internet l We consider convergence to be co-existence and symbiosis of the evolving PSTN and Internet (not the consumption of one by another); this symbiosis is manifested in integration l Integration of pure IP telephony with the PSTN has been worked in the IETF enum and megaco WGs together with ITU-T SG 2 and SG 16, respectively. l Intelligent Network is a natural PSTN platform to support such integration; ITU-T SG 11 and IETF (pint, spirits) have had a productive cooperative effort to this end. l The emphasis of the industry now is on enhanced services rather than pipes; services are key differentiators l RECOMMENDATION: the standards organizations should concentrate on providing building blocks for developing services in converged networks